Associate user to its upload (post) in Django

Last Updated : 28 Apr, 2025

Django provides built-in facilities of ForeignKey, and ManytoManyField for associating one model to another model. To associate a user model to a post model, one can use various options. This article revolves around how to associate a user to its post (post model). This tutorial uses the concept of foreign keys in Django and at the end, one will be able to create an application of post upload and also a profile app which contains all the past uploads of the user.

Prerequisites -

We have already created a user application for registration and so we will create a new app that can be named a user blog (blog upload from the user) .To do this create an app in the main project file by writing this code in your PowerShell or terminal

django-admin startapp userblog

Now this application is available in your project file and you should first add this application to the settings.py file in the project and add this application to INSTALLED_APPS

Now make migrations in your project and add this application to your project

python manage.py makemigrations python manage.py migrate

Now we have to use models in this application so that Django can create a table for the information which we are going to store in our database and the user can input the information. We have to create a class in the models.py file of userblog application which is named Snippet. We will use a ForeignKey class which will hold the id value of the user and it holds too many relationships and so you can use this class to associate the user to any other activities where there is user involvement.

Python3

from django.db import models from django.conf import settings  User = settings.AUTH_USER_MODEL  # Create your models here.   class Snippet(models.Model):     user = models.ForeignKey(User,                              default=1,                              null=True,                              on_delete=models.SET_NULL                              )     blogname = models.CharField(max_length=100)     blogauth = models.CharField(max_length=100)     blogdes = models.TextField(max_length=400)     img = models.ImageField(upload_to='pics')      def __str__(self):         return self.blogname

Also, create a Python file named forms.py and create a ModelForm for the same to input data from the user.

Python3

from django import forms from .models import Snippet   class SnippetForm(forms.ModelForm):     class Meta:         model = Snippet         fields = ['blogname',                   'img',                   'blogauth',                   'blogdes'                   ]

We need to migrate the class model of Snippet so that Django administration creates a database for the post upload and details so makemigrations of class Snippet and you will see this in django administration -

cool

Here User is a foreign key that will show all the users and it will store the key number of the last instance of post upload by a user by default it is set to superuser Now we will go to the views.py file of the application and add the main code which will be storing the information in a database using model form object.

usblog - This will display all the posts in our homepage
snippet_detail - This will get the data from the user in the form and it will associate blog to user

Python3

from django.shortcuts import render from django.http import HttpResponse from .forms import SnippetForm from .models import Snippet from django.contrib import messages # Create your views here.   def usblog(request):     snipps = Snippet.objects.all()     return render(request, 'indexg.html', {'snipps': snipps})   def snippet_detail(request):     form = SnippetForm(request.POST or None, request.FILES or None)     if request.method == 'POST':          if form.is_valid():              obj = form.save(commit=False)             obj.user = request.user             obj.save()             form = SnippetForm()             messages.success(request, & quot                              Successfully created & quot                              )      return render(request, 'form.html', {'form': form})

So by now, the Django administration has created the database of the Snippet class and you can see it by visiting Django administration. Now we have to create a simple form.html file that will contain a form from where the user can enter the queries which we have stated in the class. Here comes the beauty of Django since we have used model forms for our application Django has created an HTML code of form that will have all those queries which we needed. So simply create an HTML file in your templates file(form.html).

html

<!DOCTYPE html> <html lang="en">  <head>     <meta charset="UTF-8">     <meta name="viewport" content="width=device-width, initial-scale=1.0">     <meta http-equiv="X-UA-Compatible" content="ie=edge">     <title>Your Blog</title> </head>  <body>     <form method="post" enctype="multipart/form-data">         {% csrf_token %}         {{form.as_p}}         <button type="submit">Submit</button>     </form> </body>  </html>

Now we will need a homepage where we will see all the posts of the users so create another HTML file indexg.html and import the objects of function which we have created in views.py file. (Placed image of the only body part of HTML to show the python code you can make your own indexg with features )

html

<body>     <h1>Post play<h4>Only for geeks</h4>     </h1>      <div class="topnav">         {% if user.is_authenticated %}         <a href="#">Hi {{user.username}}</a>         <a href="accounts/logout">Logout</a>         <a href="snippet_detail">Write post</a>         {% else %}         <a href="accounts/register">Register</a>         <a href="accounts/login">Login</a>         {% endif %}     </div>     <p>         {% for snips in snipps %}          <img src="{{snips.img.url}}" alt="Image" class="img-fluid">         <h2 class="font-size-regular"><a href="#">{{snips.blogname}}</a></h2>         <h3>{{snips.user}}</h3>         {% if user.is_authenticated %}         <p>{{snips.blogdes}}</p>         {% else %}         <p>Register/Login to know more</p>         {% endif %}           {% endfor %}      </p>     </div> </body>

Let us go to our main urls file where we will have an accounting app and now make the userblog application as default and add the URLs of your application. Also in your userblog application add urls.py and add the links of 2 functions which are form.html and homepage(indexg.html).

Main Urls

Python3

from django.contrib import admin from django.urls import path, include from django.conf import settings from django.conf.urls.static import static urlpatterns = [     path('', include('userblog.urls')),      path('admin/', admin.site.urls),     path('accounts/', include('accounts.urls'))  ]

userblog urls -

Python3

from django.urls import path  from . import views urlpatterns = [      path(& quot           snippet_detail&quot          , views.snippet_detail),     path('', views.usblog, name='usblog') ]

Start the application and register the user to your application and make a post

python manage.py runserver

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Associate user to its upload (post) in Django

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Associate user to its upload (post) in Django

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