How to use bulk_create() in Django App?

Published On: 26/08/2022 | Category: Django


Hi Dev,

This example is focused on how to use bulk_create() in django app. it's simple example of django bulk_create() example. you can see django bulk_create function example. We will look at example of django bulk get or create example. you will do the following things for how to use bulk create in django.

Django bulk_create can avail us optimize our application utilizing a minuscule number of database calls to preserve a plethora of data. In other words, bulk_create can preserve multiple model instances into the database utilizing only one database call.

So, How much time can we save, again and again data and is bulk_create even faster than the standard create method? I’ve done a detailed analysis in the next chapter.

Here i explained simply step by step example of bulk_create() in django app.

Step 1: Create a Project

In this step, we’ll create a new django project using the django-admin. Head back to your command-line interface and run the following command:

django-admin startproject example
Step 2: Create a App

Now we'll create a single app called core to store a list of post names and store bulk of data in database. We're keeping things intentionally basic. Stop the local server with Control+c and use the startapp command to create this new app.

python3 manage.py startapp core
Step 3: Update setting.py

In this step we require to do add installed apps in our settings.py file. Add the below lines to your settings.py file:

Next, you need to add it in the settings.py file as follows:

settings.py
....
INSTALLED_APPS = [

    …..

    'core'

]
Step 4: Create a Model

In this step now go for the models we will We'll call our single model Post and it will have just two fields: title and description. And finally set __str__ to display the name of the post.

core/models.py
from django.db import models

class Post(models.Model):
    title = models.CharField(max_length=250)
    description = models.TextField()

    def __str__(self):
        return self.title

Ok, all set. We can engender a migrations file for this change, then integrate it to our database via migrate.

python manage.py makemigrations
python manage.py migrate
Step 5: Update admin.py File

In this step the Post class of the models is registered using the register() method to display the books tables in the Django administration dashboard.

core/admin.py
 Import admin module

from django.contrib import admin

# Import Post model

from .models import Post

# Register Post model

admin.site.register(Post)
Step 6: Creating the Views

In this step, we need to create the views for performing fetch record to the database.Open the core/views.py file and add:

core/views.py
from django.shortcuts import render
from django.views.generic import ListView
from .models import Post

# Create your views here.
class BulkCreate(ListView):

    # Define model

    model = Post

    # Define template

    template_name = 'PostList.html'

   # Read all existing records of posts table

    queryset = Post.objects.all()

    # Check the posts table is empty or not

    if queryset.exists() == False:

       # Insert 3 records in the posts table at a time

        Post.objects.bulk_create([

            Post(title='Python Django Crud Example', description='Python Django Crud Example'),

            Post(title='Python Django Ajax Crud Example', description='Python Django Ajax Crud Example'),

            Post(title='Django Ajax Form Validation Example', description='Django Ajax Form Validation Example'),

        ])

        # Return all records of the posts table

    def get_queryset(self):

        # Set the default query set

        return Post.objects.all()
Step 7: Creating the Templates

Next, then with your text editor create new templates files: core/templates/PostList.html file and the add:

core/templates/PostList.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Tuts-Station.com</title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css">
</head>
<body>
    <div class="container mt-5 pt-5">
        <div class="row d-flex justify-content-center">
            <div class="col-md-12">
                <div class="card">
                    <div class="card-header">
                        <h3>How to use bulk_create() in Django App? - <span class="text-primary"></span>Tuts-Station.com</h3>
                    </div>
                    <div class="card-body">
                        <table class="table table-bordered">
                            <thead>
                                <tr>
                                    <th>Title</th>
                                    <th>Description</th>
                                </tr>
                            </thead>
                            <tbody>
                                {% for post in object_list %}
                                    <tr>
                                        <td>{{ post.title }}</td>
                                        <td>{{ post.description }}</td>
                                    </tr>
                                {% endfor %}
                            </tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>
</body>
</html>
Step 8: Creating URLs

In this section, we’ll create the urls to access our CRUD views.Go to the urls.py core/urls.py file and update it as follows:

core/urls.py
from django.urls import path
from core import views

urlpatterns = [
    path('post/', views.BulkCreate.as_view()),
]

Next, we will require the modify the urls.py your root preoject folder lets update the file.

example/urls.py
from django.contrib import admin
from django.urls import path, include

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('core.urls')),
]
Run the Server

In this step, we’ll run the local development server for playing with our app without deploying it to the web.

python manage.py runserver
Django Admin Interface

Next, go to the http://localhost:8000/post/ address with a web browser.

I Hope It will help you....