i have two models "product" and "brand"
product has brand field ManyToMany to link the products with the concerned brand
## models.py
class Product(models.Model):
title = models.CharField(max_length=120)
slug = models.SlugField(blank=True, unique=True)
description = models.TextField()
brand = models.ManyToManyField(Brand)
class Brand(models.Model):
title = models.CharField(max_length=250, unique=True)
slug = models.SlugField(max_length=250, unique=True)
description = models.TextField(blank=True)
## url.py
re_path(r'^brands/(?P<slug>[\w-]+)/$', BrandDetail.as_view(), name = 'branddetail'),
## views.py
class BrandDetail(DetailView):
queryset = Brand.objects.all()
template_name = "brands/brand.html"
## brands/brand.html
{{ object.title }} <br/>
{{ object.description }} <br/>
Now when am rendring brand.html it shows the brand title and description fine
My question is
if i want to render in the same page the list of products linked to specific brand "considering the brand slug already passed in the URL", how i can do that?
the class is DetailsView and it has only Brand details in the query set as shown!!
i need any solution not ne
You do not need a ListView for that, you can iterate over the product_set of the brand, like:
{{ object.title }} <br/>
{{ object.description }} <br/>
products:
{% for product in object.product_set.all %}
{{ product.title }} <br/>
{% endfor %}
Related
I just started learing django and I'm trying to display a Product with the Amount of Ratings it has in a ListView. But I fail to generate the expected output.
models.py
class Product(models.Model):
name = models.CharField(max_length=200)
description = models.TextField(max_length=255, default=None)
author = models.ForeignKey(User, on_delete=models.CASCADE)
class ProductRating(models.Model):
product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name='product_rating')
user = models.ForeignKey(User, on_delete=models.CASCADE)
stars = models.SmallIntegerField(validators=[MinValueValidator(1), MaxValueValidator(5)])
views.py
class ProductListView(LoginRequiredMixin, ListView):
model = Product
def get_queryset(self):
return Product.objects.annotate(avg_rating=Avg('product_rating__stars')).order_by('-avg_rating')
def get_context_data(self, **kwargs):
data = super(ProductListView, self).get_context_data(**kwargs)
data['product_rating_count'] = Product.objects.annotate(Count('product_rating'))
return data
template
{{ product.name }} {{ product.avg_rating }} {{ product_rating_count }}
This displays the name and average-rating as expected but puts a Queryset containing all Products next to each single product like this:
<QuerySet [<Product: testp1>, <Product: testp2>, <Product: testp3>, <Product: testp4>]>
In your template you can do this.
{% for product in products %}
{{ product.name }} {{ product.avg_rating }}
Rating count: {{ product.product_rating.all.count }}
{% endfor %}
I have category and product models. These have a many-to-many relation.
My models
class ProductCategories(models.Model):
name = models.CharField(max_length = 60)
image = models.ImageField(upload_to = 'ProductCategories')
publish_date = models.DateTimeField(auto_now=False, auto_now_add=True)
is_available = models.BooleanField()
class Product(models.Model):
category = models.ManyToManyField(ProductCategories)
name = models.CharField(max_length = 60)
price = models.DecimalField(max_digits=65, decimal_places=2)
description = models.TextField()
options = models.TextField()
tags = models.TextField()
publish_date = models.DateTimeField(auto_now=False, auto_now_add=True)
stock_number = models.IntegerField()
is_available = models.BooleanField()
My view
def category(request):
categories = ProductCategories.objects.all()
products = Product.objects.none()
for category in categories:
products = products.union(Product.objects.filter(category = category)[:4])
return render(request, 'shop/shopping.html', {'categories' : categories, 'products' : products})
My Html
{% for category in categories %}
<div class="row">
<h3 style="padding-left: 15px; padding-bottom: 15px">{% filter upper %}{{ category.name }}{% endfilter %}</h3>
</div>
<div class="row">
{% for product in products %}
{{ product.category }}
{% endfor %}
</div>
{% endfor %}
I would like to list categories. Under each category, 4 products will be listed.
is it possible to pass queryset which includes both products and their categories?
Thanks,
You can simply do:
def category(request):
categories = ProductCategories.objects.all()
return render(request, 'shop/shopping.html', {'categories' : categories})
And the template
{% for category in categories %}
{% for product in category.product_set.all|slice:":4" %}
{{ product.name }}
{% endfor %}
{% endfor %}
I'm working in Django 2.2 trying to build a view for a database that compiles everything for a specific company (locations of all of their stores and notes on the companies) into a single view. I've tried methods in several different answers, but still cannot seem to get data from related foreign keys to show in the template.
models.py
class Company(models.Model):
name = models.CharField(max_length=30, primary_key=True)
official_name = models.CharField(max_length=50)
corporate_address1 = models.CharField(max_length=50)
corporate_address2 = models.CharField(max_length=50)
city = models.CharField(max_length=60)
state_province = models.CharField(max_length=30)
country = models.ForeignKey('Country', on_delete=models.CASCADE)
slug = models.SlugField(max_length=30, unique=True)
def __str__(self):
return self.name
class Stores(models.Model):
store_name = models.CharField(max_length=30, primary_key=True)
owner = models.ForeignKey('Company', on_delete=models.CASCADE)
store_address1 = models.CharField(max_length=50)
store_address2 = models.CharField(max_length=50)
city = models.CharField(max_length=60)
state_province = models.CharField(max_length=30)
country = models.ForeignKey('Country', on_delete=models.CASCADE)
type = models.CharField(max_length=30,choices=store_types)
slug = models.SlugField(max_length=30, unique=True)
def get_absolute_url(self):
return reverse("store-detail", kwargs={"slug": self.slug})
class notes(models.Model):
title = models.CharField(max_length=120)
content = models.TextField()
posted = models.DateTimeField(db_index=True, auto_now_add=True)
category = models.ForeignKey('Company', on_delete=models.CASCADE)
active = models.BooleanField(default=True)
def get_absolute_url(self):
return reverse("article-detail", kwargs={"id": self.id})
class Country(models.Model):
country = models.CharField(max_length=30,choices=countries,primary_key=True)
class Meta:
ordering = ["-country"]
db_table = 'country'
def __str__(self):
return self.country
views.py
class CompanyOverView(LoginRequiredMixin, DetailView):
model = Company
template_name = "company-overview.html"
slug_url_kwarg = 'slug'
query_pk_and_slug = True
pk_url_kwarg = "company.name"
template
<div align="center">
<p>{{ object.name }}<br>({{ object.official_name }})</p>
<p>{{ object.corporate_address1 }}<br>{{ object.corporate_address2 }}<br>
{{ object.city }}<br>{{ object.state_province }}<br>
{{ object.country }}</p>
</div>
<p>List of Stores</p>
<p>
{% for instance in object_list %}
{{ instance.company.stores.store_name }}
{{ instance.company.stores.store_address1 }}
{{ instance.company.stores.store_address2 }}
{{ instance.company.stores.city }}
{{ instance.company.stores.state_province }}
{{ instance.company.stores.country }}
{% endfor %}
</p>
<p>Notes</p>
<p>
{% for instance in object_list %}
{{ instance.company.notes.title }}
{{ instance.company.notes.posted }}
{% endfor %}
</p>
With the above code, the only thing that appears when you enter in the company's name is everything at the top (e.g."object.name" appears on the page as "Acme Corporation"). Nothing in the for loop appears on the web page.
Looking at the documentation, object_list is the default name for context unless specified. I have tried different combinations such as "for store_name in company.store_set.all" and other combinations I found in other posts, but none have worked. I've combed the documentation for everything related to foreign keys, but can't find a solution that works.
Thanks in advance if you can help.
No. object_list is the default context name in a ListView. But you have a DetailView, and you already know what the default context name is for those because you're already using it: object. You just need to iterate over the reverse relation from there:
{% for store in object.stores_set.all %}
{{ store.store_name }}
{{ store.store_address1 }}
...
{% endfor %}
I'm trying to a menu system for my sport site project where the sports are grouped together. For example the main category would be "ballsports" and under that (the child menu) people would select football, baseball or whatever else. I've got that all setup and functioning but I can't workout how to call the child menus into the templates.
Models:
class Sport(models.Model):
name = models.CharField(max_length=100, db_index=True)
sport_slug = models.SlugField(max_length=100, db_index=True)
category = models.ForeignKey('Sport_Category', on_delete=models.CASCADE,)
class Sport_Category(models.Model):
name = models.CharField(max_length=100, db_index=True)
category_slug = models.SlugField(max_length=100, db_index=True)
Views:
class IndexView(generic.ListView):
template_name="sports/index.html"
context_object_name='all_sport_category'
def get_queryset(self):
return Sport_Category.objects.all()
def list_of_sports_in_category(self):
sport_cat = self.category.name
return sport_cat
class SportListView(generic.ListView):
template_name="sports/sport-home.html"
context_object_name='sport_list'
def get_queryset(self):
return Sport.objects.all()
Template:
{% for sport_category in all_sport_category %}
<li>{{ sport_category.name }} </li> *(Working)*
{% for sports in list_of_sports_in_category %}
hi
{% endfor %}
{% endfor %}
list_of_sports_in_category method seems to return the category name, rather than the list of sports. try replacing the second for-loop in your template with {% for sport in sport_list %}.
I am having some trouble getting the values from a snippet, that I have included into a streamfield using a Snippet Chooser Block.
BioSnippet:
#register_snippet
class BioSnippet(models.Model):
name = models.CharField(max_length=200, null=True)
job_title = models.CharField(max_length=200, null=True, blank=True)
bio = RichTextField(blank=True)
image = models.ForeignKey(
'wagtailimages.Image',
null=True,
blank=True,
on_delete=models.SET_NULL,
related_name='+',
verbose_name='Bio Image'
)
contact_email = models.CharField(max_length=50, null=True, blank=True)
contact_phone = models.CharField(max_length=50, null=True, blank=True)
panels = [
FieldPanel('name'),
FieldPanel('job_title'),
FieldPanel('bio'),
ImageChooserPanel('image'),
FieldPanel('contact_email'),
FieldPanel('contact_phone'),
]
def __str__(self):
return self.name
class Meta:
ordering = ['name',]
Bio Streamfield Definitions:
class BioInline(StructBlock):
bio = SnippetChooserBlock(BioSnippet)
class BioBlock(StructBlock):
overall_title = CharBlock(required=False)
bios = ListBlock(BioInline())
This all works, but when I get to the template, I cannot seem to access the values of the snippet
{% for b in child.value.bios %}
{{ b }}
<hr>
{{ b.name }}
{% endfor %}
the {{ b }} tag outputs:
bio
Sales Team
However {{ b.name }} outputs nothing. Neither does {{ b.values.name }} or any other permutation I can guess at. I suspect the values are just not being pulled down.
bios here is defined as a list of BioInline values, and so b in your template would be a BioInline value - which has a single property, bio (giving you the actual BioSnippet object). To get the name, you'd therefore have to use: {{ b.bio.name }}.
I don't think the BioInline object is actually gaining you anything though - you could instead define BioBlock as:
class BioBlock(StructBlock):
overall_title = CharBlock(required=False)
bios = ListBlock(SnippetChooserBlock(BioSnippet))
which would make bios a list of BioSnippets - {{ b.name }} would then work as expected.
Alternatively, you can use self.bios
In blocks.py you have to import the Snippet model (should have this allready):
from thebioapp.models import BioSnippet
And then use this model in the template itself
{% for b in self.bios %}
{{ b }}
<hr>
{{ b.name }}
{% endfor %}
The post is old, but as Wagtail is growing in popularity, I hope this will benefit others!