feat(tours): add thumbnail field to OriginalVideo

Added an optional 'thumbnail' FileField to the OriginalVideo model and
created a corresponding migration to allow storing video thumbnails
directly within the database. This change enables more efficient access
to video thumbnails without needing to generate them on the fly,
improving loading times and reducing server load. The Scene model's
'thumbnail' property has also been updated to leverage the new field,
thus unifying the thumbnail retrieval process across different media
types. This modification is expected to enhance the user experience by
providing quicker access to media previews.

quackscape/tours/migrations/0017_originalvideo_thumbnail.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0.3 on 2024-03-27 07:02
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('tours', '0016_alter_categorypermission_category_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='originalvideo',
+            name='thumbnail',
+            field=models.FileField(blank=True, null=True, upload_to=''),
+        ),
+    ]

quackscape/tours/models.py

@@ -246,15 +246,21 @@ class OriginalImage(OriginalMedia):
 
         create_image_resolutions.delay(self.id)
 
+    @property
+    def thumbnail(self):
+        return self.resolutions.order_by("width").first()
+
 
 class OriginalVideo(OriginalMedia):
+    thumbnail = models.FileField(null=True, blank=True)
+
     def media_type(self) -> str:
         return "video"
 
     def save(self, *args, **kwargs):
         super().save(*args, **kwargs)
 
-        # TODO: Get and save video resolution
+        # TODO: Get and save video resolution and thumbnail
 
         create_video_resolutions(self.id)
 
@@ -289,7 +295,7 @@ class Scene(models.Model):
 
     @property
     def thumbnail(self):
-        return self.base_content.resolutions.order_by("width").first()
+        return self.base_content.thumbnail
 
     def user_has_permission(self, user):
         return user.is_authenticated and (