Fixes Pagination for react-admin to get data

Co-authored-by: Dominik Pietrak <dominip89@mi.fu-berlin.de>

unisportomat/quiz/pagination.py

-from collections import OrderedDict
-from rest_framework.response import Response
 from rest_framework.pagination import PageNumberPagination
 
 
-class ReactAdminPagination(PageNumberPagination):
-    page_query_param = "page"
-    page_size_query_param = "perPage"
-
-    def get_paginated_response(self, data):
-        count = self.page.paginator.count
-        item_starting_index = self.page.start_index() - 1
-        item_ending_index = self.page.end_index() - 1
-
-        content_range = "items {0}-{1}/{2}".format(
-            item_starting_index, item_ending_index, count
-        )
-
-        # headers = {"Content-Range": content_range}
-        headers = {"x-total-count": count}
-
-        return Response(
-            OrderedDict(
-                [
-                    ("x-total-count", count),
-                    ("next", self.get_next_link()),
-                    ("previous", self.get_previous_link()),
-                    ("results", data),
-                ]
-            ),
-            headers=headers,
-        )
-
-
 class PageNumberWithPageSizePagination(PageNumberPagination):
     page_size_query_param = "page_size"
+
+
+# SOURCE: https://github.com/bmihelac/ra-data-django-rest-framework

unisportomat/unisportomat/settings.py

@@ -3,7 +3,7 @@ Django settings for unisportomat project.
 
 Generated by 'django-admin startproject' using Django 3.2.
 
-For more information on this file, see
+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
@@ -32,7 +32,7 @@ ALLOWED_HOSTS = []
 # Application definition
 
 INSTALLED_APPS = [
-    "corsheaders",
+    "corsheaders",  # CORS Headers should be as high as possible.
     "rest_framework",
     # "quiz.apps.QuizConfig",
     "django.contrib.admin",
@@ -45,7 +45,7 @@ INSTALLED_APPS = [
 ]
 
 MIDDLEWARE = [
-    "corsheaders.middleware.CorsMiddleware",
+    "corsheaders.middleware.CorsMiddleware",  # CORS Middleware should be as high as possible.
     "django.middleware.security.SecurityMiddleware",
     "django.contrib.sessions.middleware.SessionMiddleware",
     "django.middleware.common.CommonMiddleware",
@@ -55,18 +55,7 @@ MIDDLEWARE = [
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
 ]
 
-# CORS_ALLOW_HEADERS = [
-#     "x-total-count",
-#     "accept-encoding",
-#     "authorization",
-#     "content-type",
-#     "dnt",
-#     "origin",
-#     "user-agent",
-#     "x-csrftoken",
-#     "x-requested-with",
-# ]
-
+# SOURCE: https://github.com/bmihelac/ra-data-django-rest-framework
 REST_FRAMEWORK = {
     "DEFAULT_PAGINATION_CLASS": "quiz.pagination.PageNumberWithPageSizePagination",
     "PAGE_SIZE": 10,