Django Integrity Error 1048 cannot be null - python

Under views.py
def addcomments(request):
comment_text = request.POST.get('comment')
user_id = request.POST.get('user_id')
name = request.POST.get('name')
email = request.POST.get('email')
comment = Comment.objects.create(user_id=user_id, body=comment_text, name=name, email=email)
comment.save()
return HttpResponseRedirect(reverse('users:detail', args=(user_id, )))
this one, from detail.html
{% extends 'base.html' %}
{% block title %}
{{ user.user_fname }} {{ user.user_lname }}
{% endblock %}
{% block content %}
{% if error_message %}
<p class="alert alert-danger">
<strong>{{error_message}}</strong>
</p>
{% endif %}
<div class="row">
<div class="col-lg-6">
<div class="mb-5">
<h1>{{ user.user_fname }} {{ user.user_lname }}</h1>
<p class="text-muted">{{ user.user_email }}</p>
<p>Position: {{ user.user_position }}</p>
</div>
<div class="img-responsive">
<img src="/users/media/{{user.user_image}}" alt="profile_user" class="img-rounded" width="300">
<!-- ito yung hinahanap ng search engine-->
</div>
<div class="btn-group mt-5">
Delete
Edit
Back
</div>
</div>
<div class="col-lg-6">
<h2>Comment</h2>
<p class="text-muted"> Number of comment : {{ comments_count }}</p>
{% if comments_count > 0 %}
{% for comment in comments %}
{% if comment.active %}
<p><strong>{{comment.name}}</strong> : {{comment.body}}</p>
{% endif %}
{% endfor %}
{% endif %}
<hr>
<br><br><br><br><br><br>
<form action="{%url 'users:addcomments'%}" method="post">
{% csrf_token %}
<div class="form-group">
<label>Comment</label>
<textarea name="comment" id="comment" cols="30" rows="5" class="form-control" required placeholder="Enter your comment here ..."></textarea>
</div>
<br>
<input type="text" name="name" id="name" value="{{ user.user_lname }}">
<input type="text" name="lname" id="lname" value="{{ user.user_fname }}">
<input type="text" name="email" id="email" value="{{ user.user_email }}">
<br><br><br><br>
<button type="submit" class="btn btn-sm btn-primary">Add Comment</button>
</form>
</div>
</div>
{% endblock %}
this one for url.py
path('addcomments', views.addcomments, name='addcomments'),
I am having the error message,
IntegrityError at /users/addcomments
(1048, "Column 'user_id' cannot be null")
During handling of the above exception ((1048, "Column 'user_id' cannot be null")), another exception occurred:
from 404
users\views.py, line 146, in addcomments
comment = Comment.objects.create(user_id=users_id, body=comment_text, name=name, email=email) …
Local vars
Variable Value
comment_text
'wwerwr'
email
'HeavyRain#gmail.com'
name
'Heavy'
request
<WSGIRequest: POST '/users/addcomments'>
user_id
None
the heavyrain details, ignore it, was trying stuffs
this one for detail detail is working fine properly, detail is on left side of the page, while addcomments is on the right side of the same page
#login_required(login_url='/users/login')
def detail(request, profile_id):
try:
user = User.objects.get(pk=profile_id)
comments = Comment.objects.filter(user_id=profile_id)
comments_count = Comment.objects.filter(user_id=profile_id).count()
except User.DoesNotExist:
raise Http404("Profile does not exist")
return render(request, 'UI/detail.html', {'user': user, 'comments': comments, 'comments_count': comments_count})

You don't have an user_id field in your html form that's why it becomes None or null and since you don't allow your user_id to be none (don't allow it to be none) django fails to create it. I suggest you get rid of the user_id in the creation and search for a user with that exact unique username that posted the form with
user = request.user
comment = Comment.objects.create(user=user, body=comment_text, name=name, email=email)

I'm sorry but use a model form. It's the MOST appropriate solution. It will manage rendering your form in html and ensuring data is clean and validated.
from django import forms
class CommentForm(forms.ModelForm):
class Meta:
model = Comment
fields = [...]
Please see further information in the documentation.
https://docs.djangoproject.com/en/4.1/topics/forms/modelforms/

Related

Why the html custom form is not working django

I have a contact page with a simple form.
Here is views.py:
def contact_view(request):
if request.method == 'GET':
form = ContactForm()
else:
form = ContactForm(request.POST)
if form.is_valid():
subject = form.cleaned_data['subject']
from_email = form.cleaned_data['from_email']
message = form.cleaned_data['message']
try:
send_mail(subject, message, from_email, settings.ADMIN_EMAILS)
except BadHeaderError:
return HttpResponse('Invalid header found.')
return redirect('success')
return render(request, "base/contact.html", {'form': form})
def success_view(request):
return HttpResponse('Success! Thank you for your message.')
this is contact.html:
{% block content%}
<main class="page contact-page">
<section class="portfolio-block contact">
<div class="container">
<div class="heading">
<h2>Contact me</h2>
</div>
<form method="post">
{% csrf_token %}
<div class="mb-3"><label class="form-label" for="name">Your Name</label><input class="form-control item" type="text" id="name"></div>
<div class="mb-3"><label class="form-label" for="subject">Subject</label><input class="form-control item" type="text" id="subject"></div>
<div class="mb-3"><label class="form-label" for="email">Email</label><input class="form-control item" type="email" id="email"></div>
<div class="mb-3"><label class="form-label" for="message">Message</label><textarea class="form-control item" id="message"></textarea></div>
<div class="mb-3"><button class="btn btn-primary btn-lg d-block w-100" type="submit" value="submit">Submit Form</button></div>
</form>
</div>
</section>
</main>
{% endblock %}
When I use form.as_p it works very well but when I use this template it is not working
it only shows in the terminal that a post request was made.
The html looping syntax of form is following, where we have access to specific field, field.label ,non_field_errors as well as particular field errors.
In your case you can use in this way:
contact.html
{% block content%}
<main class="page contact-page">
<section class="portfolio-block contact">
<div class="container">
<div class="heading">
<h2>Contact me</h2>
</div>
<form method="POST" novalidate>
{% csrf_token %}
{% if form.non_field_errors %}
{% for error in form.non_field_errors %}
<div>
{{error}}
</div>
{% endfor %}
{% endif %}
{% for field in form %}
<p>{{field.label_tag}} {{field}}</p>
<br>
{% for error in field.errors %}
<span>{{error}}</span>
{% endfor %}
{% endfor %}
<input type="submit" value="Save">
</form>
</div>
</section>
</main>
{% endblock %}
You can use it as above it will work perfectly with your existing views, as you said it is working with form.as_p.
If you give only form.as_p, it will render form fields in <p> tag of html, you can see through Ctrl+U of view page source,there we cannot have more control over form.
Your question -- How can i use bootstrap's classes in django's form?
Answer - You can set through widget in your form's fileds. for example:
class MyForm(forms.Form):
name=forms.CharField(widget=forms.TextInput(attrs={'class':'form-control'}))
In the above way, you can set it to every field.

error from template tags: 'str' object has no attribute 'as_widget'

I made a template tag and when I am using that in my template I get this error:
'str' object has no attribute 'as_widget'
This is the code of my template tag:
from django import template
register = template.Library()
#register.filter
def field_type(bound_field):
return bound_field.field.widget.__class__.__name__
#register.filter
def input_class(bound_field):
css_class = ''
if bound_field.form.is_bound:
if bound_field.errors:
css_class = 'is-invalid'
elif field_type(bound_field) != 'PasswordInput':
css_class = 'is-valid'
return 'form-control {}'.format(css_class)
and my template is here:
{% extends 'board/account.html' %}
{% load widget_tweaks %}
{% load form_tags %}
{% block title %}Sign up{% endblock title %}
{% block content %}
<div class="accountform">
<form method="POST">
<h4 class="display-6 text-white p-3">Create your account</h4>
{% csrf_token %}
<div class="alert alert-danger p-0" style="border:none;">
{% for field in form.visible_fields %}
{% for error in field.errors %}
<span class="err">{{ error }}</span><br>
{% endfor %}
{% endfor %}
</div>
<div class="form-group">
<label for="id_username">Username</label>
{% render_field form.username|input_class class='form-control' placeholder='John Doe' %}
</div>
<div class="form-group">
<label for="id_email">Email</label>
{% render_field form.email|input_class class='form-control' placeholder='johndoe#email.com' %}
</div>
<div class="row">
<div class="form-group col-md-6">
<label for="id_password1">Password</label>
{% render_field form.password1|input_class class='form-control' placeholder='****' %}
</div>
<div class="form-group col-md-6">
<label for="id_password2">Confirm Password</label>
{% render_field form.password2|input_class class='form-control' placeholder='****' %}
</div>
</div>
<input type="submit" value="Sign up" class="btn btn-primary btn-block">
<p class="display-6 bg-signup p-3">Have an account Sign In</p>
</form>
</div>
</div>
{% endblock content %}
I saw similar question and approved answer in SO which basically says that the solution for this issue is to add form in context, well that is already added, here is views
def signup_view(request):
if request.method == 'POST':
form = UserRegistrationForm(request.POST)
if form.is_valid():
user = form.save()
login(request, user)
return redirect('board:home')
form = UserRegistrationForm(request.POST)
return render(request, 'accounts/signup.html', {'form': form})
Please help me solve this issue. Thank you for your help.
There doesn't seem to be any reason for either of these template tags. django-widget-tweaks already has the ability to add a custom error class with render_field, and you already know when you're rendering the password field so you can add that class when you need to.
(Also, django-widget-tweaks provides the field_type filter already).
So:
{% with WIDGET_ERROR_CLASS='my_error' %}
<div class="form-group">
<label for="id_username">Username</label>
{% render_field form.username class+='form-control' placeholder='John Doe' %}
</div>
<div class="form-group">
<label for="id_email">Email</label>
{% render_field form.email class+='form-control' placeholder='johndoe#email.com' %}
</div>
<div class="row">
<div class="form-group col-md-6">
<label for="id_password1">Password</label>
{% render_field form.password1| class+='form-control' placeholder='****' %}
</div>
...
{% endwith %}
You are doing it wrong way you have to add calss in class attribute not render class name as field. Do it like this.
{% render_field form.username class=form.username|input_class placeholder='John Doe' %}

The submitted form is not saved in sql - dJango

I have searched some posts about this issue but still not find solution. After clicking the "submit", the page could redirect to another page. But the sql database doesn't show the submitted information.
Thanks in advance for your suggestion.
views.py
#csrf_exempt
def input(request):
if request.method == 'POST':
form = InputForm(request.POST or None, request.FILES or None)
if form.is_valid():
company = form.cleaned_data['company']
region = form.cleaned_data['region']
uom= form.cleaned_data['uom']
start_date= form.cleaned_data['start_date']
end_date= form.cleaned_data['end_date']
add_input=Input.objects.create(company=company,region=region,uom=uom,start_date=start_date,end_date=end_date)
add_input.save()
return redirect('resut')
else:
print(form.errors)
else:
form = InputForm(initial={'company':'coco','uom':'M$'},instance=Input)
return render_to_response('inputform.html',{'form': form})
models.py
class Input(models.Model):
company=models.CharField(max_length=100)
region=models.CharField(max_length=100)
uom=models.CharField(max_length=100)
start_date=models.DateField(auto_now=False, auto_now_add=False)
end_date=models.DateField(auto_now=False, auto_now_add=False)
forms.py
class InputForm(forms.ModelForm):
company=forms.CharField(widget=forms.TextInput, label="Company",error_messages={'required': 'Please enter your name'},required=True)
regionlist = forms.ModelChoiceField(queryset=Dupont.objects.values('region').distinct())
uom=forms.CharField(required=True)
start_date=forms.DateField(widget=DateInput(),required=True)
end_date = forms.DateField(widget=DateInput(),required=True)
error_css_class='error'
required_css_class = 'required'
class Meta:
model = Input
fields = ('company', 'region','uom','start_date','end_date')
widgets = {
'start_date': forms.DateInput(attrs={'class':'datepicker'}),
'end_date': forms.DateInput(attrs={'class':'datepicker'}),
}
html snippet
<form action="{% url 'result' %}" method="post">{% csrf_token %}
<!--company-->
<div class="field">
<p>Company:<input type="text" name="company" value="{{company}}"/>
</div>
<!--region-->
<div class="field" >
<label> Select the Region:
{{ form.regionlist }}
{% for region in form.regionlist.choices %}
<option value="{{ val }}" {% ifequal data.val val %}selected {% endifequal %}></option>
{% endfor %}
</label>
</div>
<!--uome-->
<div class="field">
<p>Unit of Measure:<input type="text" name="uom" value="{{uom}}"/>
</div>
<!--start date-->
<label for="startDate">Start Month:</label>
<input name="start_date" id="startDate" class="date-picker"/>
<!--END date-->
<label for="endDate">End Month:</label>
<input name="end_date" id="endDate" class="date-picker" />
<!--submit-->
<div class="fieldWrapper">
<p><input type="submit" value="Submit" /></p></div>
{% if form.errors %}
{% for field in form %}
{% for error in field.errors %}
<div class="alert alert-error">
<strong>{{ error|escape }}</strong>
</div>
{% endfor %}
{% endfor %}
{% for error in form.non_field_errors %}
<div class="alert alert-error">
<strong>{{ error|escape }}</strong>
</div>
{% endfor %}
{% endif %}
</form>
No, the action point to another view, instead of input view. I don't paste that view because the issue now is this form's data doesn't saved successfully.
Well then thats your problem, when you submit a form it goes to the specified action. If the snippet is the inputform.html as I suspect it is then you just need to delete the action from your form.
<form method="post">

Create a custom html template using forms in Django

I've been going over the docs and some StackOverflow examples but I'm still having a little trouble. In Django I created a form, the view renders it and I have it displayed as form.as_p in the HTML template. This works perfectly, but I would like to be able to customize my HTML template instead of having it displayed as form.as_p. Any examples on how to do so?
So far I have the following.
View:
#login_required
def register(request):
info = Content.objects.get(id=request.user.id)
if request.method == 'POST':
form = UploadFileForm(request.POST, request.FILES, instance=info)
if form.is_valid():
info = form.save(commit=False)
info.save()
return HttpResponseRedirect('/portal/register')
else:
form = UploadFileForm(instance=info)
return render(request, 'portal/register.html', {'form': form, 'gallery': info})
Form:
class UploadFileForm(ModelForm):
logo = forms.ImageField(required=False)
image1 = forms.ImageField(required=False)
terms = forms.CharField(required=False)
class Meta:
model = Content
fields = ['user', 'logo', 'image1', 'terms']
Model:
class Content(models.Model):
user = models.ForeignKey(User)
logo = models.ImageField(upload_to=content_file_name, null=True, blank=True)
image1 = models.ImageField(upload_to=content_file_name, null=True, blank=True)
terms = models.CharField(max_length="256", blank=True)
def __unicode__(self):
return self.title
HTML Template:
<form method="POST" action="" enctype="multipart/form-data">
{% csrf_token %}
<div class="col-lg-3 col-md-4 col-xs-6 thumb">
<a class="thumbnail" href="#">
{% if gallery.logo %}
<img class="img-responsive" id="logo" src="/media/{{ gallery.logo }}" alt="">
{% else %}
<img class="img-responsive" id="logo" src="/media/images/placeholder.png" alt="">
{% endif %}
</a>
<input type="file" name="logo" id="logo" multiple>
</div>
<div class="col-lg-3 col-md-4 col-xs-6 thumb">
<a class="thumbnail" href="#">
{% if gallery.image1 %}
<img class="img-responsive" id="image1" src="/media/{{ gallery.image1 }}" alt="">
{% else %}
<img class="img-responsive" id="image1" src="/media/images/placeholder.png" alt="">
{% endif %}
</a>
<input type="file" name="image1" id="image1" multiple>
</div>
<div class="form-group">
<input type="text" name="terms" id="terms" class="form-control input-sm" placeholder="terms" value="{{ gallery.terms }}">
</div>
<input type="submit" value="Submit" />
</form>
Yes you can loop on the form fields by doing the following
{% for field in form %}
<div class="fieldWrapper">
{{ field.errors }}
<label>
{{ field.label_tag }}
</label>
<div>
{{ field }}
</div>
</div>
{% endfor %}
Then you can add class to the div and label tags and style the form fields
You can also use Django Widget Tweaks to add classed to the form fields.
Click here to read in more details
By using widget tweaks you simply find the field in which you want to add the class by doing this
{% load widget_tweaks %}
{{ form.name|add_class:"inputContact volunteer" }}
You can render the fields manually:
We don’t have to let Django unpack the form’s fields; we can do it
manually if we like (allowing us to reorder the fields, for example).
Each field is available as an attribute of the form using {{
form.name_of_field }}, and in a Django template, will be rendered
appropriately.
Example from the documentation:
{{ form.non_field_errors }}
<div class="fieldWrapper">
{{ form.subject.errors }}
<label for="{{ form.subject.id_for_label }}">Email subject:</label>
{{ form.subject }}
</div>
<div class="fieldWrapper">
{{ form.message.errors }}
<label for="{{ form.message.id_for_label }}">Your message:</label>
{{ form.message }}
</div>
As I said in the comments, see also Django Crispy Forms. You can achieve the same without so much markup.

RECaptcha with WTforms won't render

I am using wtforms-recaptcha in order to get the Recaptcha to show.
pip install wtforms-recaptcha
I guided myself on this site to make the installation:
https://pypi.python.org/pypi/wtforms-recaptcha
The problem is that the recaptcha code is being echoed into the form. That is, I see the recaptcha's code on the form and not the recaptcha itself:
<script type="text/javascript" src="https://www.google.com/recaptcha/api/challenge?k=6LeCJvUSAAAAAAvqwJEueVdV0wyNLPtX6KWSTdXp"> </script> <noscript> <iframe src="https://www.google.com/recaptcha/api/noscript?k=6LeCJvUSAAAAAAvqwJEueVdV0wyNLPtX6KWSTdXp" height="300" width="500" frameborder="0"></iframe><br> <textarea name="recaptcha_challenge_field" rows="3" cols="40"> </textarea> <input type="hidden" name="recaptcha_response_field" value="manual_challenge"> </noscript>
Form code on form.py:
from wtforms import PasswordField, StringField, validators, widgets
from wtforms.form import Form
from wtfrecaptcha.fields import RecaptchaField
class ContactForm(Form):
"""Enables the user to provide feedback."""
first_name = StringField('First Name', [
validators.DataRequired()
])
last_name = StringField('Last Name', [
validators.DataRequired()
])
captcha = RecaptchaField('Captcha', [], public_key='6LeCJvUSAAAAAAvqwJEueVdV0wyNLPtX6KWSTdXp', private_key='6LeCJvUSAAAAADcUvYyLv8kt9ARiTAluDGqHBumY', secure=True)
Calling the form from within the HTML:
<form method="post">
{% for field in form %}
<div class="form-group{% if field.errors %} has-error has-feedback{% endif %}">
<div class="row">
<div class="col-xs-12 col-md-4">
{{ field.label(class="control-label") }}
</div>
<div class="col-xs-12 col-md-8">
{{ field(class="form-control") }}
</div>
</div>
{% if field.errors %}
<span class="glyphicon glyphicon-remove form-control-feedback"></span>
{% endif %}
{% for error in field.errors %}
<p class="help-block text-danger">
<span class="glyphicon glyphicon-remove"></span>
{{ error }}
</p>
{% endfor %}
</div>
{% endfor %}
<br>
<button type="submit" class="btn btn-primary">{{ title }}</button>
</form>
Route call code:
#app.route('/contact', methods=['GET', 'POST'])
def contact():
"""Display the contact page."""
form = ContactForm(request.form, captcha={'ip_address': request.remote_addr})
if request.method == 'POST' and form.validate():
return "Thank you for contacting us."
return render_template(
...
)
The issue is that WTForms-RECAPTCH does not return a safe string, but instead returns a unicode string. The underlying issue needs to be fixed here (by returning an instance of wtforms.widgets.core.HTMLString or something else that provides an __html__ method).
To work around the problem for now you should simply mark the field as safe in your template:
<div class="col-xs-12 col-md-8">
{{ field(class="form-control") | safe }}
</div>
Or, alternately, only mark the re-captcha field as safe:
<div class="col-xs-12 col-md-8">
{% if field.short_name == "captcha" %}
{{ field(class="form-control") | safe }}
{% else %}
{{ field(class="form-control") }}
{% endif %}
</div>
There is a PR for this issue and this is fixed as of version 0.3.2

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