add save video to playlist if update playlist

apps/core/signals.py

@@ -2,7 +2,7 @@ from django.conf import settings
 from django.dispatch import receiver
 from django.db.models.signals import post_save
 
-from . import models, tasks
+from . import models, tasks, utils
 
 
 @receiver(post_save, sender=models.Video)
@@ -17,3 +17,6 @@ def post_save_playlist(sender, instance, created, **kwargs):
         instance.json = f'{settings.DOMAIN_NAME}/api/playlist/{instance.id}/'
         instance.mrss = f'{settings.DOMAIN_NAME}/api/playlist/{instance.id}/mrss'
         instance.save()
+
+    if instance.type == models.DYNAMIC:
+        utils.add_video_to_new_playlist(instance)

apps/core/utils.py

@@ -6,10 +6,6 @@ from moviepy.editor import VideoFileClip
 from .models import Video, Playlist, TagToObject, DYNAMIC
 
 
-def asset_upload(instance, filename):
-    return f'videos/{filename}'
-
-
 def generate_thumbnail(video_path, video_name):
     clip = VideoFileClip(video_path)
     thumbnail_name = video_name.split('.')[0]
@@ -41,3 +37,23 @@ def add_video_to_playlist(video):
 
             for playlist in playlists:
                 playlist.videos.add(video)
+
+
+def add_video_to_new_playlist(playlist):
+    video_content_type = ContentType.objects.get_for_model(Video)
+    playlist_content_type = ContentType.objects.get_for_model(Playlist)
+
+    tag_ids = list(TagToObject.objects.filter(
+        content_type=playlist_content_type,
+        object_id=playlist.id,
+    ).values_list('tag_id', flat=True))
+
+    if tag_ids:
+        video_ids = list(TagToObject.objects.filter(
+            content_type=video_content_type,
+            tag_id__in=tag_ids,
+        ).values_list('object_id', flat=True))
+
+        if video_ids:
+            for video in Video.objects.filter(id__in=video_ids):
+                playlist.videos.add(video)