{"errors":[{"detail":"invalid query parameter: format","status":"400","source":{"pointer":"/data"},"code":"invalid"}]}

"""
Django settings for api_proj project.

Generated by 'django-admin startproject' using Django 3.2.5.

For more information on this file, see
https://docs.djangoproject.com/en/3.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.2/ref/settings/
"""
from pathlib import Path
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent
# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-$utl*$#frk2uongkclwa@ex4(_r2^&xsje(n+)nlis^%1gbj!&'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
ALLOWED_HOSTS = []
# Application definition
INSTALLED_APPS = [
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'api.apps.ApiConfig',
 'rest_framework',
 'rest_framework_json_api',
]
MIDDLEWARE = [
 'django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
ROOT_URLCONF = 'api_proj.urls'
TEMPLATES = [
 {
 'BACKEND': 'django.template.backends.django.DjangoTemplates',
 'DIRS': [],
 'APP_DIRS': True,
 'OPTIONS': {
 'context_processors': [
 'django.template.context_processors.debug',
 'django.template.context_processors.request',
 'django.contrib.auth.context_processors.auth',
 'django.contrib.messages.context_processors.messages',
 ],
 },
 },
]
WSGI_APPLICATION = 'api_proj.wsgi.application'
# Database
# https://docs.djangoproject.com/en/3.2/ref/settings/#databases
DATABASES = {
 'default': {
 'ENGINE': 'django.db.backends.sqlite3',
 'NAME': BASE_DIR / 'db.sqlite3',
 }
}
# Password validation
# https://docs.djangoproject.com/en/3.2/ref/settings/#auth-password-validators
AUTH_PASSWORD_VALIDATORS = [
 {
 'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
 },
 {
 'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
 },
 {
 'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
 },
 {
 'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
 },
]
# Internationalization
# https://docs.djangoproject.com/en/3.2/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/
STATIC_URL = '/static/'
# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
REST_FRAMEWORK = {
 'PAGE_SIZE': 10,
 'EXCEPTION_HANDLER': 'rest_framework_json_api.exceptions.exception_handler',
 'DEFAULT_PAGINATION_CLASS':
 'rest_framework_json_api.pagination.JsonApiPageNumberPagination',
 'DEFAULT_PARSER_CLASSES': (
 'rest_framework_json_api.parsers.JSONParser',
 'rest_framework.parsers.FormParser',
 'rest_framework.parsers.MultiPartParser'
 ),
 'DEFAULT_RENDERER_CLASSES': (
 'rest_framework_json_api.renderers.JSONRenderer',
 'rest_framework_json_api.renderers.BrowsableAPIRenderer',
 ),
 'DEFAULT_METADATA_CLASS': 'rest_framework_json_api.metadata.JSONAPIMetadata',
 'DEFAULT_FILTER_BACKENDS': (
 'rest_framework_json_api.filters.QueryParameterValidationFilter',
 'rest_framework_json_api.filters.OrderingFilter',
 'rest_framework_json_api.django_filters.DjangoFilterBackend',
 'rest_framework.filters.SearchFilter',
 ),
 'SEARCH_PARAM': 'filter[search]',
 'TEST_REQUEST_RENDERER_CLASSES': (
 'rest_framework_json_api.renderers.JSONRenderer',
 ),
 'TEST_REQUEST_DEFAULT_FORMAT': 'vnd.api+json',
}

from rest_framework_json_api import serializers
 
from .models import ToDoItem 
class ToDoItemSerializer(serializers.HyperlinkedModelSerializer):
 class Meta: 
 model=ToDoItem 
 fields = ('id', 'name','description')

from django.db import models 
 
class ToDoItem(models.Model): 
 name = models.CharField(max_length=60) 
 description = models.CharField(max_length=500)
 
 def __str__(self): 
 return (
 "TodoItem(\n" 
 f"\tName := {self.name}" 
 f"\n\tDescription := {self.description}"
 "\n)\n"
 )

from rest_framework_json_api.views import ModelViewSet
from .models import ToDoItem
from .serializers import ToDoItemSerializer
class ToDoItemViewSet(ModelViewSet):
 queryset = ToDoItem.objects.all().order_by('name')
 serializer_class = ToDoItemSerializer