from django.db import models
class Student(models.Model):
    name = models.CharField(max_length=111)
    roll = models.IntegerField()
    city = models.CharField(max_length=111)

from django.shortcuts import render

# Create your views here.

import io
from rest_framework.parsers import JSONParser
from . serializers import StudentSerializer
from rest_framework.renderers import JSONRenderer
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt

@csrf_exempt
def student_create(request):
    if request.method =="POST":
        json_data = request.body
        stream = io.BytesIO(json_data)
        pythondata = JSONParser().parse(stream)
        serializer = StudentSerializer(data=pythondata)
        if serializer.is_valid():
            serializer.save()
            res = {'msg':'data created'}
            json_data = JSONRenderer().render(res)
            return HttpResponse(json_data, content_type='application/json')

        json_data = JSONRenderer().render(serializer.errors)
        return HttpResponse(json_data, content_type='application/json')

serializers.py

from rest_framework import serializers
from .models import Student

class StudentSerializer(serializers.Serializer):
    name = serializers.CharField(max_length=111)
    roll = serializers.IntegerField()
    city = serializers.CharField(max_length=722)
 

def create(self,validated_data):
    return Student.objects.create(**validated_data)

urls.py

from django.contrib import admin
from django.urls import path
from apiApp import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('stucreate/', views.student_create),
]

API

import requests
import json 
URL = "http://127.0.0.1:8000/stucreate/"

data = {
    'name':'sonam',
    'roll':101,
    'city':"Ranchi",
}

json_data = json.dumps(data)
r = requests.post(url = URL, data = json_data)
data = r.json()
print(data)