LIL-237. Add video counter

apps/course/models.py

@@ -11,7 +11,7 @@ from project.mixins import BaseModel, DeactivatedMixin
 
 from .manager import CategoryQuerySet
 
-from apps.content.models import ImageObject, Gallery
+from apps.content.models import ImageObject, Gallery, Video
 
 User = get_user_model()
 
@@ -84,6 +84,14 @@ class Course(BaseModel, DeactivatedMixin):
     created_at = models.DateTimeField(auto_now_add=True)
     update_at = models.DateTimeField(auto_now=True)
 
+    class Meta:
+        verbose_name = 'Курс'
+        verbose_name_plural = 'Курсы'
+        ordering = ['-created_at']
+
+    def __str__(self):
+        return str(self.id) + ' ' + self.title
+
     def save(self, *args, **kwargs):
         if not self.slug:
             self.slug = slugify(
@@ -126,13 +134,9 @@ class Course(BaseModel, DeactivatedMixin):
             return True
         return False
 
-    def __str__(self):
-        return str(self.id) + ' ' + self.title
-
-    class Meta:
-        verbose_name = 'Курс'
-        verbose_name_plural = 'Курсы'
-        ordering = ['-created_at']
+    @property
+    def count_videos_in_lessons(self):
+        return Video.objects.filter(lesson__in=self.lessons.all()).count()
 
 
 class Category(models.Model):

apps/course/templates/course/course.html

@@ -126,7 +126,7 @@
                 <use xlink:href="{% static 'img/sprite.svg' %}#icon-video"></use>
               </svg>
             </div>
-            <div class="meta__title">12 видео</div>
+            <div class="meta__title">{{ course.count_videos_in_lessons }} видео</div>
           </div>
         </div>
       </div>