for api development

menu-items.py

from rest_framework.response import Response
from rest_framework.decorators import api_view, renderer_classes
from .serializers import MenuItemSerializer, CatagorySerializer
from rest_framework.renderers import JSONRenderer, BrowsableAPIRenderer, TemplateHTMLRenderer
from .models import MenuItem, Catagory
from rest_framework import status
from django.http import HttpResponse
from django.http import HttpResponseBadRequest
from django.shortcuts import get_object_or_404
from django.core.paginator import Paginator, EmptyPage


@api_view(['GET', 'POST', ])
@renderer_classes([BrowsableAPIRenderer,  JSONRenderer, TemplateHTMLRenderer])
def menuItemsViews(request):
    if request.method == 'GET':
        items = MenuItem.objects.select_related('catagory').all()

        catagory_name = request.query_params.get('catagory')
        price_to = request.query_params.get('price')
        search = request.query_params.get('search')
        ordering = request.query_params.get('ordering')
        perpage = request.query_params.get('perpage', default=2)
        page = request.query_params.get('page', default=1)


        if catagory_name:
            items = items.filter(catagory__title=catagory_name)
        if price_to:
            items = items.filter(price=price_to)
        if search:
            items = items.filter(catagory__title__istartswith=search)
        if ordering:
            if ordering == "reversed__price":
                items = items.order_by("-price")
            elif ordering == "reversed__stock":
                items = items.order_by('-inventory')
            elif ordering == "reversed__title":
                items.order_by('-catagory__title')
            else:
                ordered_list = ordering.split(",")
                items = items.order_by(*ordered_list)

        if int(perpage) > 5:
            return HttpResponseBadRequest(f"Error {HttpResponseBadRequest.status_code} The limit of per page data is 5" )

        paginator = Paginator(items, per_page=perpage)
        try:
            items = paginator.page(number=page)
        except EmptyPage:
            items = []


        itemsSerializer = MenuItemSerializer(items, many=True)
        return Response(
            {
                "items":itemsSerializer.data
            },
            template_name='data.html'
        )
    
    if request.method == "POST":
        itemsSerializer = MenuItemSerializer(data=request.data, many=True)
        itemsSerializer.is_valid(raise_exception=True)
        itemsSerializer.save()
        return Response(itemsSerializer.data, status.HTTP_201_CREATED)

done