How to use bulk_create() in Django App?
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 ProjectIn 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 exampleStep 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 coreStep 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 migrateStep 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.pyImport 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 runserverDjango Admin Interface
Next, go to the http://localhost:8000/post/ address with a web browser.
I Hope It will help you....