How to get related to ID objects from database

user_14181217 0
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I am creating a website where i am using django database.The database will have one def called categories and one called gifi.So a gif will belong to a category and when one category will be clicked it will send the user to a page where all gifs that belong to that category will show up.I know that i should do something like requesting ID but i dont know the code

This is the models:

from django.db import models

class categorite(models.Model):
    name = models.CharField(max_length=100)
    id = models.AutoField(primary_key=True)

class Gifi(models.Model):
    foto = models.ImageField(upload_to='website/static/')
    emri = models.CharField(max_length=100)
    Source = models.CharField(max_length=100)
    Kodet = models.CharField(max_length=12)
    categoryId = models.ForeignKey(categorite, on_delete=models.CASCADE)
    id = models.AutoField(primary_key=True)

This is views:

 from django.shortcuts import render,get_object_or_404
from .models import  Gifi,categorite
# Create your views here.
def home(request):
    return render(request, 'website/home.html')

def categories(request):
    content = {
        'view': categorite.objects.all()
    }
    return render(request, 'website/categories.html',content)

def PostaCode(request):
    return render(request, 'website/PostaCode.html')

def Contact(request):
    return render(request, 'website/Contact.html')
def category(request,id):
    content = {
        'view':  categorite.objects.get(id=id)
    }
    return render(request, 'website/category.html',content)

This is urls:

from django.urls import path
from . import views
urlpatterns = [
    path('Home/',views.home, name='home'),
    path('Categories/', views.categories, name='categories'),
    path('PostaCode/', views.PostaCode, name='PostaCode'),
    path('Contact/', views.Contact, name='Contact'),
    path('Category/<int:id>/', views.category, name='category'),

    ]

This is the code that i use to show categories on my categories.html:

<div class="row p">
    {%for categorite in view%}
    <a class="c" href="{% url 'category' categorite.id %}">{{categorite.name}}</a>
    {% endfor %}
  </div>

This video gives a quick show, how website is working now: https://vimeo.com/user122082575/review/451987151/da98e3f75c

django-queryset django html python
2 Answers

In your views when you are asking for Gifi you should use the <int:id> which you provided from the url. So it will be something like this in your views: Gifi.objects.filter(categoryId_id=id) then you can pass that in your context.

Remarks that you have to fix:

  • categorite is lower case it should Categorite also name always in english.
  • Source, Kodet should be lower case, following the python convention.
  • id is obsolete since that you always have pk and django knows when to convert id to pk while filtering results.
  • categoryId should be just category
  • a view function should always be in snake case. Eg PostaCode -> posta_code
  • Fix your spacing between functions, classes
  • urls should be in lower case.

Being consistent with your code is mandatory always follow the conventions for each language. For python that would be pep8 or black please make sure you know these two.

user_127744930

You can get the data using filter like this:

# view
def category(request,id):
    content = {
        'view':  Gifi.objects.filter(categoryId_id=id)
    }
    return render(request, 'website/category.html',content)

# template
<div class="row p">
{% for gifi in view %}
   {{ gifi.emri }}
{% endfor %}
</div>

Alternatively, you can use related objects to get data(using reverse relation between Gifi to Category):

# view
def category(request,id):
    content = {
        'view':  Category.objects.get(id=id)
    }
    return render(request, 'website/category.html',content)

# template
<div class="row p">
{{ view.name }}  // category name
{% for gifi in view.gifi_set.all %}
   {{ gifi.emri }} // gifi information
{% endfor %}
</div>
user_26961650
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