How to Return JSON in Django

This discussion will look at a short introduction to JSON format and convert data into JSON format using the JsonResponse class in Django.

Use the JsonResponse Class to Return Data Into JSON Format in Django

JSON is also known as JavaScript object notation, and it is simply data representation. It is used widely across the internet for almost every single API.

JSON is extremely lightweight to send data on the client site. It also integrates very nicely with JavaScript.

Since JSON is just a superset of JavaScript, it integrates nicely with JavaScript. Almost every major language has a library or built-in functionality to parse JSON strings into objects or classes.

To pass data in JSON format is extremely easy in Django; let’s see how it works.

Let’s start by creating a Profile model. We will create three fields name, email and bio in this model. These fields would be CharField with 1000 max_length.

class Profile(models.Model):
    name = models.CharField(max_length=1000)
    email = models.CharField(max_length=1000)
    bio = models.CharField(max_length=1000)

We need to register the Profile model in the admin.py file.

from .models import Book, Profile

admin.site.register(Book)
admin.site.register(Profile)

We need to create a new URL, so it will call the json function from the views.py file whenever we hit this URL.

urlpatterns = [
    path("admin/", admin.site.urls),
    path("json", views.json, name="json"),
]

Now we need to create a new function that is json. First, we need to import JsonResponse and other required modules.

from .models import Profile
from django.http import JsonResponse

In the json function, we get values from Profile objects using objects.values() and convert them into a list data type.

After creating the data variable, we need to return data in JSON response. After passing a data variable in the JsonResponse class, we must make sure that we pass the safe argument and set it equal to False.

def json(request):
    data = list(Profile.objects.values())
    return JsonResponse(data, safe=False)

To create our model, we need to make the migration. The following commands will allow us to see our models in the admin panel.

python manage.py makemigrations

python manage.py migrate

Now everything will work fine, just run the server using this command and see what happens.

python manage.py runserver

We will run the browser and go through with this address http://127.0.0.1:8000/admin to the admin panel. If we open our model the first time, we need to add the model using the top-right button.

After filling the fields, we need to save this object and go to the JSON page through http://127.0.0.1:8000/json.

[
    {
    id: 1,
    name: "jeams parker",
    email: "exampl@example.com",
    bio: "This is the example bio"
    }
]

Now we can access data in JSON format.