Added: random recipe page

recipes/repositories.py

@@ -0,0 +1,15 @@
+import random
+import typing
+
+import django.db.models as djmodels
+
+import recipes.models as models
+
+
+class RecipesRepository:
+    @classmethod
+    def get_random(cls) -> typing.Union[models.Recipe, None]:
+        max_id = models.Recipe.objects.aggregate(max_id=djmodels.Max("id"))["max_id"]
+        random_id = random.randint(1, max_id)
+
+        return models.Recipe.objects.filter(id__gte=random_id).first()

recipes/templates/recipes/recipe_list.html

@@ -2,7 +2,12 @@
 {% load static %}
 
 {% block header %}
-<h1>{% block title %}Рецепты{% endblock %}</h1>
+<div class="ui menu">
+  <h1 class="ui header item">{% block title %}Рецепты{% endblock %}</h1>
+  <a class="item" href="{% url 'recipes:random' %}">
+    <i class="random icon"></i> Случайный рецепт
+  </a>
+</div>
 {% endblock %}
 
 {% block content %}

recipes/urls.py

@@ -22,6 +22,7 @@
 app_name = "recipes"
 urlpatterns = [
     path("", cache_page(60)(views.RecipesListView.as_view()), name="list"),
+    path("recipe/random", views.RandomRecipeView.as_view(), name="random"),
     path(
         "recipe/<int:pk>/",
         cache_page(3600)(views.RecipeDetailsView.as_view()),

recipes/views.py

@@ -15,17 +15,15 @@
 from typing import Any, Dict
 
 from django.contrib.messages.views import SuccessMessageMixin
-from django.http import (
-    HttpRequest,
-    HttpResponse,
-    HttpResponseBadRequest,
-    HttpResponseNotFound,
-)
+import django.http as http
 from django.shortcuts import get_object_or_404
 from django.urls import reverse
+from django.views import View
 from django.views.generic import DetailView, ListView
 from django.views.generic.edit import CreateView
 
+from recipes import repositories
+
 from . import forms, models
 
 
@@ -71,18 +69,29 @@ def get_object(self):
         )
 
 
+class RandomRecipeView(View):
+    def get(self, request: http.HttpRequest, *args, **kwargs) -> http.HttpResponse:
+        recipe = repositories.RecipesRepository.get_random()
+        if not recipe:
+            raise http.Http404()
+
+        return http.HttpResponseRedirect(
+            reverse("recipes:details", kwargs={"pk": recipe.pk})
+        )
+
+
 class CommentAddView(SuccessMessageMixin, CreateView):
     model = models.Comment
     form_class = forms.CommentForm
     success_message: str = "Комментарий добавлен. Он будет отображен после модерации."
 
-    def post(self, request: HttpRequest, *args, **kwargs) -> HttpResponse:
+    def post(self, request: http.HttpRequest, *args, **kwargs) -> http.HttpResponse:
         if "recipe_id" not in kwargs:
-            return HttpResponseBadRequest()
+            return http.HttpResponseBadRequest()
         recipe_id = kwargs["recipe_id"]
         self.recipe = models.Recipe.objects.get(pk=recipe_id)
         if not self.recipe:
-            return HttpResponseNotFound()
+            return http.HttpResponseNotFound()
 
         return super().post(request, *args, **kwargs)