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Exception Value: __str__ returned non-string (type int) in django model

I want to create a function that returns the list of last points per vehicle that have sent navigation data in the last 48 hours. I create a view it works and it displays name correctly but when I want to add new Vehicle from Django Admin panel it shows an error.
TypeError at /admin/navigation/navigationrecord/add/
str returned non-string (type int)
How can I fixed it? And is there a more afformative and efficient way to list data over the past 48 hours?
models.py
class Vehicle(models.Model):
id = models.IntegerField(primary_key=True)
plate = models.CharField(max_length=30)
def __str__(self):
return str(self.plate)
class NavigationRecord(models.Model):
id = models.IntegerField(primary_key=True)
vehicle = models.ForeignKey(Vehicle, on_delete=models.CASCADE)
datetime = models.DateField(default=timezone.now)
latitude = models.FloatField()
longitude = models.FloatField()
def __str__(self):
return self.vehicle
views.py
def get_48_hours(request):
time_48 = datetime.now() - timedelta(hours=48)
results = NavigationRecord.objects.filter(datetime__gte=time_48)
context = {
'results': results,
}
return render(request, 'navigation.html', context)
navigation.html
<table class="table table-hover">
<thead>
<tr>
<th>ID</th>
<th>Vehicle</th>
</tr>
</thead>
<tbody>
{% for result in results %}
<tr>
<td>{{result.id}}</td>
<td>{{result.vehicle}}</td>
<td>{{result.datetime}}</td>
</tr>
{% endfor %}
</tbody>
</table>
admin.py
models = [Vehicle, NavigationRecord]
admin.site.register(models)
traceback
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/admin/navigation/navigationrecord/add/
Django Version: 2.2.13
Python Version: 3.7.0
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'navigation']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Template error:
In template C:\Users\edeni\senior\myenv\lib\site-packages\django\contrib\admin\templates\admin\includes\fieldset.html, error at line 19
__str__ returned non-string (type int)
9 : {% for field in line %}
10 : <div{% if not line.fields|length_is:'1' %} class="fieldBox{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}{% if field.field.is_hidden %} hidden{% endif %}"{% elif field.is_checkbox %} class="checkbox-row"{% endif %}>
11 : {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.errors }}{% endif %}
12 : {% if field.is_checkbox %}
13 : {{ field.field }}{{ field.label_tag }}
14 : {% else %}
15 : {{ field.label_tag }}
16 : {% if field.is_readonly %}
17 : <div class="readonly">{{ field.contents }}</div>
18 : {% else %}
19 : {{ field.field }}
20 : {% endif %}
21 : {% endif %}
22 : {% if field.field.help_text %}
23 : <div class="help">{{ field.field.help_text|safe }}</div>
24 : {% endif %}
25 : </div>
26 : {% endfor %}
27 : </div>
28 : {% endfor %}
29 : </fieldset>
Traceback:
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\core\handlers\exception.py" in inner
34. response = get_response(request)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\core\handlers\base.py" in _get_response
145. response = self.process_exception_by_middleware(e, request)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\core\handlers\base.py" in _get_response
143. response = response.render()
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\response.py" in render
106. self.content = self.rendered_content
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\response.py" in rendered_content
83. content = template.render(context, self._request)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\backends\django.py" in render
61. return self.template.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
171. return self._render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in _render
163. return self.nodelist.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\loader_tags.py" in render
150. return compiled_parent._render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in _render
163. return self.nodelist.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\loader_tags.py" in render
150. return compiled_parent._render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in _render
163. return self.nodelist.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\loader_tags.py" in render
62. result = block.nodelist.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\loader_tags.py" in render
62. result = block.nodelist.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\defaulttags.py" in render
209. nodelist.append(node.render_annotated(context))
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\loader_tags.py" in render
188. return template.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
173. return self._render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in _render
163. return self.nodelist.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\defaulttags.py" in render
209. nodelist.append(node.render_annotated(context))
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\defaulttags.py" in render
209. nodelist.append(node.render_annotated(context))
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\defaulttags.py" in render
309. return nodelist.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\defaulttags.py" in render
309. return nodelist.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
937. bit = node.render_annotated(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_annotated
904. return self.render(context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render
993. return render_value_in_context(output, context)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\template\base.py" in render_value_in_context
972. value = str(value)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\utils\html.py" in <lambda>
388. klass.__str__ = lambda self: mark_safe(klass_str(self))
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\boundfield.py" in __str__
33. return self.as_widget()
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\boundfield.py" in as_widget
93. renderer=self.form.renderer,
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\widgets.py" in render
241. context = self.get_context(name, value, attrs)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\contrib\admin\widgets.py" in get_context
288. 'rendered_widget': self.widget.render(name, value, attrs),
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\widgets.py" in render
241. context = self.get_context(name, value, attrs)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\widgets.py" in get_context
678. context = super().get_context(name, value, attrs)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\widgets.py" in get_context
639. context['widget']['optgroups'] = self.optgroups(name, context['widget']['value'], attrs)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\widgets.py" in optgroups
587. for index, (option_value, option_label) in enumerate(self.choices):
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\models.py" in __iter__
1138. yield self.choice(obj)
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\models.py" in choice
1150. return (self.field.prepare_value(obj), self.field.label_from_instance(obj))
File "C:\Users\edeni\senior\myenv\lib\site-packages\django\forms\models.py" in label_from_instance
1216. return str(obj)
Exception Type: TypeError at /admin/navigation/navigationrecord/add/
Exception Value: __str__ returned non-string (type int)

If you look at the stracktrace, it literally says: __str__ returned non-string (type int).
This is caused by your NavigationRecord' __str__ method which returns self.vehicle which is the foreignkey, thus a integer. Try changing this method to return a str of the self.vehicle instead. That should call __str__ on the Vehicle class.
def __str__(self):
return str(self.vehicle)

How to fix TypeError __str__ returned non-string

My code it still gives the error of __str__ returned non-string (type Contact) despite the fact that i cast the return statement with str()
My model:
class Contact(models.Model):
name = models.CharField("Contact Name", max_length=50)
surname = models.CharField("Contact Surname", max_length=50)
company = models.ForeignKey(Customer, verbose_name='Company',on_delete=models.CASCADE)
department = models.ForeignKey(Department, verbose_name='Department',on_delete=models.CASCADE)
position = models.CharField("Position", max_length=50, null=True, blank=True)
birthday = models.DateField("Birthday", null=True, blank=True)
remarks = models.TextField("Remarks", max_length=500, null=True, blank=True)
skype = models.CharField("Spype", max_length=50, null=True, blank=True)
def clean(self):
for field in self._meta.fields:
if isinstance(field, (models.CharField, models.TextField)) and getattr(self, field.name)!=None:
setattr(self, field.name, getattr(self, field.name).strip())
class Meta:
verbose_name = "Contact"
#####Overide save method to store names and surnames in caps
def save(self, *args, **kwargs):
for attr_name in ['name', 'surname', 'position']:
val = getattr(self, attr_name, False)
if val:
setattr(self, attr_name, val.upper())
super(Contact, self).save(*args, **kwargs)
def __str__(self):
return self.surname + " " + self.name
I also used to write the str function like this:
def __str__(self):
return str(self.surname + " " + self.name)
but still the code returns the same error.
Here is my traceback
Django Version: 2.2.6
Python Version: 3.5.2
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.humanize',
'adminactions',
'django.contrib.admin',
'intranet',
'daterange_filter',
'gunicorn',
'notifications')
Installed Middleware:
('whitenoise.middleware.WhiteNoiseMiddleware',
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware')
Template error:
In template /usr/local/lib/python3.5/dist-packages/django/contrib/admin/templates/admin/edit_inline/tabular.html, error at line 33
__str__ returned non-string (type Contact)
23 : <tbody>
24 : {% for inline_admin_form in inline_admin_formset %}
25 : {% if inline_admin_form.form.non_field_errors %}
26 : <tr><td colspan="{{ inline_admin_form|cell_count }}">{{ inline_admin_form.form.non_field_errors }}</td></tr>
27 : {% endif %}
28 : <tr class="form-row {% cycle "row1" "row2" %} {% if inline_admin_form.original or inline_admin_form.show_url %}has_original{% endif %}{% if forloop.last and inline_admin_formset.has_add_permission %} empty-form{% endif %}"
29 : id="{{ inline_admin_formset.formset.prefix }}-{% if not forloop.last %}{{ forloop.counter0 }}{% else %}empty{% endif %}">
30 : <td class="original">
31 : {% if inline_admin_form.original or inline_admin_form.show_url %}<p>
32 : {% if inline_admin_form.original %}
33 : {{ inline_admin_form.original }}
34 : {% if inline_admin_form.model_admin.show_change_link and inline_admin_form.model_admin.has_registered_model %}{% if inline_admin_formset.has_change_permission %}{% trans "Change" %}{% else %}{% trans "View" %}{% endif %}{% endif %}
35 : {% endif %}
36 : {% if inline_admin_form.show_url %}{% trans "View on site" %}{% endif %}
37 : </p>{% endif %}
38 : {% if inline_admin_form.needs_explicit_pk_field %}{{ inline_admin_form.pk_field.field }}{% endif %}
39 : {% if inline_admin_form.fk_field %}{{ inline_admin_form.fk_field.field }}{% endif %}
40 : {% spaceless %}
41 : {% for fieldset in inline_admin_form %}
42 : {% for line in fieldset %}
43 : {% for field in line %}
Traceback:
File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/exception.py" in inner
34. response = get_response(request)
File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py" in _get_response
145. response = self.process_exception_by_middleware(e, request)
File "/usr/local/lib/python3.5/dist-packages/django/core/handlers/base.py" in _get_response
143. response = response.render()
File "/usr/local/lib/python3.5/dist-packages/django/template/response.py" in render
106. self.content = self.rendered_content
File "/usr/local/lib/python3.5/dist-packages/django/template/response.py" in rendered_content
83. content = template.render(context, self._request)
File "/usr/local/lib/python3.5/dist-packages/django/template/backends/django.py" in render
61. return self.template.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
171. return self._render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in _render
163. return self.nodelist.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
937. bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/loader_tags.py" in render
150. return compiled_parent._render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in _render
163. return self.nodelist.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
937. bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/loader_tags.py" in render
150. return compiled_parent._render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in _render
163. return self.nodelist.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
937. bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/loader_tags.py" in render
62. result = block.nodelist.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
937. bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/loader_tags.py" in render
62. result = block.nodelist.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
937. bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/defaulttags.py" in render
209. nodelist.append(node.render_annotated(context))
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/loader_tags.py" in render
188. return template.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
173. return self._render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in _render
163. return self.nodelist.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
937. bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/defaulttags.py" in render
209. nodelist.append(node.render_annotated(context))
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/defaulttags.py" in render
309. return nodelist.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
937. bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/defaulttags.py" in render
309. return nodelist.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
937. bit = node.render_annotated(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_annotated
904. return self.render(context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render
993. return render_value_in_context(output, context)
File "/usr/local/lib/python3.5/dist-packages/django/template/base.py" in render_value_in_context
972. value = str(value)
Exception Type: TypeError at /private/intranet/contact/742/change/
Exception Value: __str__ returned non-string (type Contact)
my view
#staff_member_required#login is required
def contact_view(request, intranet_contact_id):
contact = Contact.objects.get(id = intranet_contact_id)
emails = Contact_email.objects.filter(contact_name = intranet_contact_id)
phones = Contact_Phone.objects.filter(contact_name = intranet_contact_id)
other_company_contacts = Contact.objects.filter(company = contact.company.id).exclude(pk= intranet_contact_id)
return render(request,'contact/details.html', dict(contact = contact, emails = emails, phones = phones, other_company_contacts = other_company_contacts))
admin.py
class ContactAdmin(ReadPermissionModelAdmin):
list_display = ['show_name', 'company', 'department', 'position', 'show_details','skype']
list_filter = ['company']
search_fields = ('surname', 'name', 'company__customer_name','skype')
inlines = [Contact_PhoneInline, Contact_emailInline]
#alphabet_filter = 'remarks'
#DEFAULT_ALPHABET = u'T'
formfield_overrides = {
models.CharField: {'widget': TextInput(attrs={'size':'25'})},
models.BigIntegerField: {'widget': TextInput(attrs={'size':'25'})},
models.TextField: {'widget': Textarea(attrs={'rows':6, 'cols':40})},
}
fieldsets = (
(None, {
'fields': (('name', 'surname'), ('company', 'department'), ('position', 'birthday'), ('skype'), ('remarks'),)
}),
)
list_per_page = 20
def response_change(self, request, obj, post_url_continue=None):
#This makes the response go to contact full detail page for an edited order
return HttpResponseRedirect(reverse('contacts', args=(obj.id,)))
#return HttpResponseRedirect("../../contacts/%s/" % obj.id)
def response_add(self, request, obj, post_url_continue=None):
#This makes the response go to contact full detail page for a newlly added order to inquiry list
return HttpResponseRedirect(reverse('contacts', args=(obj.id,)))
#return HttpResponseRedirect("../../contacts/%s/" % obj.id)
def show_name(self, obj):
return obj
show_name.short_description = 'Name'
show_name.admin_order_field = 'surname'
def show_details(self, obj):
#sos
#return 'Details' % (obj.id)
return format_html('Details',str(obj.id))
show_details.allow_tags = True
show_details.short_description = 'Details'
admin.site.register(Contact, ContactAdmin)
How can i deal wih that?

Try changing the show_name function to:
def show_name(self, obj):
return obj.__str__()
show_name.short_description = 'Name'
show_name.admin_order_field = 'surname'
A quick test I've done seem to indicate that while it's fine to expect linked object via a foreign key will render their str fine, the instance itself seems to break when I try to either pass the obj back.

The support was very helpful.
Finally i came up with the solution.
The error occured because the str functions of the inline classes related with the Contact model was false.

Recursion Error - Maximum Recursion dept exceeded when ForeignKey('self') django

I am getting an error in admin console while trying to open a model (employees in my case). This is occurring after adding a field which is a ForeignKey('self'). I guess it is conflicting with str method. If I comment out the method, there is no error, but all the objects in the model are appearing as 'employee object'. Here is what my error looks like https://ibb.co/jHt84Q
Here is my models.py:
from django.db import models
import calendar
from datetime import datetime
from datetime import timedelta
class employees(models.Model):
emp_id=models.PositiveIntegerField()
emp_name = models.CharField(max_length = 100)
emp_lname = models.CharField(max_length = 100)
emp_loc = models.CharField(max_length = 100,null=True)
manager_id=models.ForeignKey('self',null=True,blank=True)
image=models.ImageField(upload_to='profile_image',default='/profile_image/profile-icon.png')
email = models.EmailField(default='app-engine#gmail.com', blank=False)
def __str__(self):
return str(self.emp_id) + '-' + self.emp_name + '-' + self.emp_loc+'-'+str(self.manager_id)
class leave(models.Model):
employee = models.ForeignKey(employees, on_delete=models.CASCADE, default='1')
start_date = models.DateField()
end_date = models.DateField()
status=models.CharField(max_length=1,default='P')
ltype=models.CharField(max_length=2)
message=models.CharField(max_length=500,blank=True)
date_created = models.DateTimeField(auto_now_add=True)
def leave_length(self):
return self.end_date - self.start_date+timedelta(days=1);
def __str__(self):
return str(self.id) + '/' + str(self.employee.emp_name) +'/'+str(self.start_date) +'/'+str(self.end_date) +'/'+str(self.status)+'/'+str(self.date_created)
Here is my traceback:
Environment:
Request Method: GET
Request URL: http://localhost:8000/admin/apply/employees/
Django Version: 1.11.3
Python Version: 3.6.0
Installed Applications:
['apply.apps.ApplyConfig',
'm_manage',
'pending.apps.PendingConfig',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Template error:
In template C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\contrib\admin\templates\admin\base.html, error at line 75
maximum recursion depth exceeded while calling a Python object 65 : <li{% if message.tags %} class="{{ message.tags }}"{% endif %}>{{ message|capfirst }}</li>
66 : {% endfor %}</ul>
67 : {% endif %}
68 : {% endblock messages %}
69 :
70 : <!-- Content -->
71 : <div id="content" class="{% block coltype %}colM{% endblock %}">
72 : {% block pretitle %}{% endblock %}
73 : {% block content_title %}{% if title %}<h1>{{ title }}</h1>{% endif %}{% endblock %}
74 : {% block content %}
75 : {% block object -tools %}{% endblock %}
76 : {{ content }}
77 : {% endblock %}
78 : {% block sidebar %}{% endblock %}
79 : <br class="clear" />
80 : </div>
81 : <!-- END Content -->
82 :
83 : {% block footer %}<div id="footer"></div>{% endblock %}
84 : </div>
85 : <!-- END Container -->
Traceback:
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\db\models\options.py" in get_field
617. return self.fields_map[field_name]
During handling of the above exception ('__str__'), another exception occurred:
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\contrib\admin\utils.py" in lookup_field
283. f = _get_non_gfk_field(opts, name)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\contrib\admin\utils.py" in _get_non_gfk_field
317. field = opts.get_field(name)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\db\models\options.py" in get_field
619. raise FieldDoesNotExist("%s has no field named '%s'" % (self.object_name, field_name))
During handling of the above exception (employees has no field named '__str__'), another exception occurred:
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\db\models\fields\related_descriptors.py" in __get__
178. rel_obj = getattr(instance, self.cache_name)
During handling of the above exception ('employees' object has no attribute '_manager_id_cache'), another exception occurred:
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\core\handlers\exception.py" in inner
41. response = get_response(request)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\core\handlers\base.py" in _get_response
217. response = self.process_exception_by_middleware(e, request)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\core\handlers\base.py" in _get_response
215. response = response.render()
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\response.py" in render
107. self.content = self.rendered_content
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\response.py" in rendered_content
84. content = template.render(context, self._request)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\backends\django.py" in render
66. return self.template.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render
207. return self._render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in _render
199. return self.nodelist.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render
990. bit = node.render_annotated(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render_annotated
957. return self.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\loader_tags.py" in render
177. return compiled_parent._render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in _render
199. return self.nodelist.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render
990. bit = node.render_annotated(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render_annotated
957. return self.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\loader_tags.py" in render
177. return compiled_parent._render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in _render
199. return self.nodelist.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render
990. bit = node.render_annotated(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render_annotated
957. return self.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\loader_tags.py" in render
72. result = block.nodelist.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render
990. bit = node.render_annotated(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render_annotated
957. return self.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\loader_tags.py" in render
72. result = block.nodelist.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render
990. bit = node.render_annotated(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\base.py" in render_annotated
957. return self.render(context)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\template\library.py" in render
225. _dict = self.func(*resolved_args, **resolved_kwargs)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\contrib\admin\templatetags\admin_list.py" in result_list
340. 'results': list(results(cl))}
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\contrib\admin\templatetags\admin_list.py" in results
316. yield ResultList(None, items_for_result(cl, res, None))
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\contrib\admin\templatetags\admin_list.py" in __init__
307. super(ResultList, self).__init__(*items)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\contrib\admin\templatetags\admin_list.py" in items_for_result
218. f, attr, value = lookup_field(field_name, result, cl.model_admin)
File "C:\Users\rhshanka\AppData\Local\Programs\Python\Python36\lib\site-packages\django-1.11.3-py3.6.egg\django\contrib\admin\utils.py" in lookup_field
299. value = attr()
File "C:\Users\rhshanka\LMS\apply\models.py" in __str__
15. return str(self.emp_id) + '-' + self.emp_name + '-' + self.emp_loc+'-'+str(self.manager_id)
Exception Type: RecursionError at /admin/apply/employees/
Exception Value: maximum recursion depth exceeded while calling a Python object

Try it:
def __str__(self):
self_str = '%s-%s-%s' % (self.emp_id, self.emp_name, self.emp_loc)
if self.manager_id and self.manager_id.pk != self.pk:
return '%s-%s' % (self_str, str(self.manager_id))
return self_str
And you need to be sure your logic is correct, for many inherits it will be not readable.

Getting Django Tables2 to work

I'm trying to get django_tables2 to work, but I keep getting an error. I already have it installed and it's already in my settings.
models.py
class Schedules(models.Model):
course_name = models.CharField(max_length=128, choices=COURSE_NAME_CHOICES, default='a-plus')
location = models.CharField(max_length=128, choices=LOCATION_CHOICES, default='south_plainfield')
room = models.CharField(max_length=128, choices=ROOM_CHOICES, default='A')
start_date = models.DateField(auto_now=False, auto_now_add=False, default=datetime.date.today)
start_time = models.CharField(max_length=128, choices=START_TIME_CHOICES, default='eight-thirty am')
end_time = models.CharField(max_length=128, choices=END_TIME_CHOICES, default='eight-thirty am')
instructor = models.CharField(max_length=128, choices=INSTRUCTOR_CHOICES, default='adewale')
total_hours = models.CharField(max_length=128, choices=TOTAL_HOURS_CHOICES, default='six')
hours_per_class = models.CharField(max_length=128, choices=HOURS_PER_CLASS_CHOICES, default='four_and_half')
frequency = models.CharField(max_length=128)
status = models.CharField(max_length=128, choices=STATUS_CHOICES)
interval = models.CharField(max_length=128, choices=INTERVAL_CHOICES, default='1 day')
initiated_by = models.CharField(max_length=128, null=True)
schedule_id = models.IntegerField(default=0)
def save(self, flag=True, *args, **kwargs):
super(Schedules, self).save()
if flag:
self.schedule_id = self.id + 10000
self.save(flag=False, *args, **kwargs)
tables.py
import django_tables2 as tables
from schedule.models import Schedules
class ScheduleTable(tables.Table):
class Meta:
model = Schedules
views.py
from schedule.models import Schedules
from schedule.tables import ScheduleTable
def search_Schedule(request):
context_dict = {}
if request.method == 'POST':
query = request.POST['course_name_search']
results = Schedules.objects.filter(course_name=query)
table = ScheduleTable(results)
if query:
context_dict['table'] = table
else:
context_dict['no_results'] = query
return render(request, "schedule/search_schedule.html", context_dict)
search_schedule.html
{% extends 'base.html' %}
{% load django_tables2 %}
{% block main_content %}
<form method="post" action="">
{% csrf_token %}
<label for="course_name_search">Course Name:</label>
<input type="text" name="course_name_search" id="course_name_search">
<input type="submit" name="submit">
</form>
<div id="result_panel">
{% if no_results %}
No results returned for <q>{{ no_results }}</q>
{% else %}
{% render_table table %}
{% endif %}
</div>
{% endblock %}
The error I'm getting is 'ValueError at /schedule/search_schedule/: Expected table or queryset, not str.' I'm pretty sure I followed the steps to the letter. What am I doing wrong?
Edit: Here's the traceback:
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/schedule/search_schedule/
Django Version: 1.10
Python Version: 3.6.1
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'registration',
'django_countries',
'localflavor',
'django_tables2',
'avtechpassport',
'students',
'billing',
'timesheet',
'wai_wdp',
'jobs',
'schedule']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Template error:
In template /home/jerry22/PycharmProjects/avtechpassport_proj1/templates/schedule/search_schedule.html, error at line 38
Expected table or queryset, not str 28 : <form method="post" action="">
29 : {% csrf_token %}
30 : <label for="course_name_search">Course Name:</label>
31 : <input type="text" name="course_name_search" id="course_name_search">
32 : <input type="submit" name="submit">
33 : </form>
34 : <div id="result_panel">
35 : {% if no_results %}
36 : No results returned for <q>{{ no_results }}</q>
37 : {% else %}
38 : {% render_table table %}
39 : {% endif %}
40 : </div>
41 : {% endblock %}
Traceback:
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
39. response = get_response(request)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/jerry22/PycharmProjects/avtechpassport_proj1/schedule/views.py" in search_Schedule
81. return render(request, "schedule/search_schedule.html", context_dict)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/shortcuts.py" in render
30. content = loader.render_to_string(template_name, context, request, using=using)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/loader.py" in render_to_string
68. return template.render(context, request)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/backends/django.py" in render
66. return self.template.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render
208. return self._render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/loader_tags.py" in render
174. return compiled_parent._render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in _render
199. return self.nodelist.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/loader_tags.py" in render
70. result = block.nodelist.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/defaulttags.py" in render
323. return nodelist.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/home/jerry22/.virtualenvs/jerry_avtechpassport_project/lib/python3.6/site-packages/django_tables2/templatetags/django_tables2.py" in render
132. raise ValueError('Expected table or queryset, not {}'.format(klass))
Exception Type: ValueError at /schedule/search_schedule/
Exception Value: Expected table or queryset, not str

For a GET request, {% if no_results %} will evaluate to False, so Django tries to render a non-existent table in the {% else %} block.
You could do something like this instead.
{% if table %}
{% render_table table %}
{% else %}
{% if no_results %}
No results returned for <q>{{ no_results }}</q>
{% else %}
Please enter a search
{% endif %}
{% endif %}

key error value 0 on modelformset when queryset is empty

i want to create multiple instances of a model using a modelformset.
but when the queryset is empty and the parameter extra is greater than 0 it raises this error:
Environment:
Request Method: GET
Request URL: http://localhost:8000/alta_socies/proces_alta_projecte_autoocupat/adreces/
Django Version: 1.7.7
Python Version: 2.7.9
Installed Applications:
('django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.formtools',
'inici',
'alta_socies',
'empreses',
'socies')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware')
Template error:
In template /home/usergci/gestioci/alta_socies/templates/alta_socies/proces_alta_autoocupat.html, error at line 59
0
49 : <div class="row">
50 : <div class="medium-12 columns content">
51 : <div class="row">
52 : <div class="medium-12 columns">
53 : <div class="group">
54 : <h2>{{ projecte.pas }}</h2>
55 : {% block explicacio_pas %}{% endblock %}
56 : </div>
57 : <form method="post" action="">{% csrf_token %}
58 : {{ wizard.management_form }}
59 : {% if wizard.form.forms %}
60 : {{ wizard.form.management_form }}
61 : {% for form in wizard.form.forms %}
62 : {% block step_factory_form %}
63 : {% endblock %}
64 : {% endfor %}
65 : {% else %}
66 : {% block step_single_form %}
67 : {% endblock %}
68 : {% endif %}
69 : <input class="small radius button" type="submit" name="save_only" value="Guardar y salir"/>
Traceback:
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
137. response = response.render()
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/response.py" in render
103. self.content = self.rendered_content
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/response.py" in rendered_content
80. content = template.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in render
148. return self._render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in _render
142. return self.nodelist.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in render
844. bit = self.render_node(node, context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
80. return node.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
126. return compiled_parent._render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in _render
142. return self.nodelist.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in render
844. bit = self.render_node(node, context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
80. return node.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
126. return compiled_parent._render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in _render
142. return self.nodelist.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in render
844. bit = self.render_node(node, context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
80. return node.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
126. return compiled_parent._render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in _render
142. return self.nodelist.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in render
844. bit = self.render_node(node, context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
80. return node.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render
402. return strip_spaces_between_tags(self.nodelist.render(context).strip())
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in render
844. bit = self.render_node(node, context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
80. return node.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
65. result = block.nodelist.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in render
844. bit = self.render_node(node, context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
80. return node.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
65. result = block.nodelist.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in render
844. bit = self.render_node(node, context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/debug.py" in render_node
80. return node.render(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/defaulttags.py" in render
305. match = condition.eval(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/defaulttags.py" in eval
898. return self.value.resolve(context, ignore_failures=True)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in resolve
596. obj = self.var.resolve(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in resolve
734. value = self._resolve_lookup(context)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/template/base.py" in _resolve_lookup
770. current = getattr(current, bit)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/utils/functional.py" in __get__
55. res = instance.__dict__[self.func.__name__] = self.func(instance)
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/forms/formsets.py" in forms
141. forms = [self._construct_form(i) for i in xrange(self.total_form_count())]
File "/home/usergci/.virtualenvs/heteroceras/local/lib/python2.7/site-packages/django/forms/models.py" in _construct_form
591. kwargs['initial'] = self.initial_extra[i - self.initial_form_count()]
Exception Type: KeyError at /alta_socies/proces_alta_projecte_autoocupat/adreces/
Exception Value: 0
the offending lines as far as i debugged are:
AdrecesFormSet = modelformset_factory(AdrecaProjecteAutoocupat,
form=FormulariAdrecaProjecteAutoocupat,
can_delete=True)
any hint?

The wizard form was expecting a list of dicts intead of a dict!!! The problem was somewhere else in the views.py