Add error codes in django rest framework for form validation

exceptions.py

from rest_framework.views import exception_handler
from rest_framework.exceptions import ErrorDetail, _get_full_details


def custom_exception_handler(exc, context):
    # Call REST framework's default exception handler first,
    # to get the standard error response.
    response = exception_handler(exc, context)

    # Now add the HTTP status code to the response.
    if response is not None:
        response.data['status'] = response.status_code

    if response.status_code == 400:
        for key, value in response.data.items():
            try:
                response.data[key] = _get_full_details(response.data[key])
            except:
                pass

    return response