LIL-100 Обработчик лайков

apps/course/templates/course/_items.html

@@ -1,6 +1,6 @@
 {% load static %}
 
-<div class="courses__item"><a class="courses__preview" href="#"><img class="courses__pic" src="{{ course.cover.url }}"/>
+<div class="courses__item" data-course data-course-id={{ course.id }} data-likes-count={{ course.likes.count }}><a class="courses__preview" href="#"><img class="courses__pic" src="{{ course.cover.url }}"/>
   <div class="courses__view">Подробнее</div>
   {% if course.is_featured %}
     <div class="courses__label courses__label_fav"></div>
@@ -26,7 +26,7 @@
       <div class="user__meta">
         <div class="user__date">{{ course.created_at_humanize }}</div>
         <a class="user__likes likes" href="#">
-          <div class="likes__counter">253</div>
+          <div class="likes__counter">{{ course.likes.count }}</div>
           <div class="likes__icon">
             <svg class="icon icon-like">
               <use xlink:href="{% get_static_prefix %}img/sprite.svg#icon-like"></use>

apps/course/views.py

@@ -1,11 +1,40 @@
+from django.contrib.auth.decorators import login_required
 from django.http import JsonResponse
-from django.views.generic import ListView
 from django.template import loader
-
-from .models import Course
+from django.views.generic import View, ListView
+from django.views.decorators.csrf import csrf_exempt
+from django.views.decorators.http import require_http_methods
+from .models import Course, Like
 from .filters import CourseFilter
 
 
+@login_required
+@csrf_exempt
+@require_http_methods(['POST'])
+def likes(request, course_id):
+    try:
+        course = Course.objects.prefetch_related('likes').get(id=course_id)
+    except Course.DoesNotExist:
+        return JsonResponse({
+            'success': False,
+            'errors': ['Course with id f{cource_id} not found']
+        })
+    else:
+        course_user_likes = course.likes.filter(user=request.user)
+        if course_user_likes.exists():
+            is_liked = False
+            course_user_likes.delete()
+        else:
+            course.likes.add(Like.objects.create(user=request.user))
+            is_liked = True
+        count = course.likes.count()
+        return JsonResponse({
+            "success": True,
+            "likes_count": count,
+            "is_liked": is_liked,
+        })
+
+
 class CoursesView(ListView):
     model = Course
     context_object_name = 'course_items'

project/urls.py

@@ -18,16 +18,17 @@ from django.urls import path, include
 from django.views.generic import TemplateView
 from django.conf import settings
 
-from apps.course.views import CoursesView
+from apps.course.views import CoursesView, likes
 
 urlpatterns = [
     path('admin/', admin.site.urls),
     path('auth/', include(('apps.auth.urls', 'lilcity'))),
     path('courses/', CoursesView.as_view(), name='courses'),
+    path('courses/<int:course_id>/like/', likes, name='likes'),
     path('', TemplateView.as_view(template_name="templates/lilcity/main.html"), name='index'),
 ]
 
 
 if settings.DEBUG:
     from django.conf.urls.static import static
-    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
+    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)