How to solve the Identical URL Pattern Conflict in Django? - django

Question

while practicing on Django I have faced the following problem of Identical URL Pattern. I have tried but fail to solve.
My project has one apps and the models are
class Category(models.Model):
title = models.CharField(max_length=150)
slug = models.SlugField(unique=True,blank=True, max_length=255)
class Post(models.Model):
title = models.CharField(max_length=200)
cats = models.ForeignKey(Category, on_delete=models.CASCADE)
slug = models.SlugField(unique=True,blank=True, max_length=255)
My urls.py
from django.contrib import admin
from django.urls import path
from post import views as apps
urlpatterns = [
path('admin/', admin.site.urls),
path('<slug:slug>/', apps.categoryView, name='category'),
path('<slug:slug>/',apps.PostView, name='calc_detail'),
]
Problem:
When I Put '/' in the second line of the urlpattern for Category View, category View works but post View doesn't work (404).
If remove '/' urlpattern for CategoryView , then post view Works but Category Views shows 404.
How should I configure these urls. I am using function based views

Answer 1

There's really no way to handle these except using different patterns or handling both in the same view, I would suggest different patterns:
from django.contrib import admin
from django.urls import path
from post import views as apps
urlpatterns = [
path('admin/', admin.site.urls),
path('pattern1/<slug:slug>/', apps.categoryView, name='category'),
path('pattern2/<slug:slug>/',apps.PostView, name='calc_detail'),
]
Also have you thought what would happen if a post and a category ended up having the same slug? Best to have different patterns.
About putting '/' making some url work and not it is because django appends slashes by default to each url, so if you really want to do this (NOT RECOMMENDED) you may set APPEND_SLASH = False in your setting and have one url with a slash and other without.