Add parent albums

gallery/admin.py

@@ -39,7 +39,7 @@ class AlbumAdmin(admin.ModelAdmin):
     prepopulated_fields = {'slug': ('name',)}
     list_display = ('__str__', 'location',  'album_date', 'is_public', 'thumbnail', )
     search_fields = ('name',)
-    ordering = ('name',)
+    ordering = ('-album_date',)
     list_per_page = 30
     list_editable = ('is_public', 'location')
 

gallery/migrations/0001_initial.py

@@ -1,4 +1,4 @@
-# Generated by Django 5.1.4 on 2025-01-15 18:22
+# Generated by Django 5.1.4 on 2025-01-18 07:39
 
 import datetime
 import django.db.models.deletion
@@ -44,10 +44,12 @@ class Migration(migrations.Migration):
                 ('slug', models.SlugField(max_length=150, unique=True, verbose_name='Slug')),
                 ('album_date', models.DateField(default=datetime.datetime.now, verbose_name='Album Date')),
                 ('is_public', models.BooleanField(default=False, verbose_name='Published')),
+                ('parent', models.ForeignKey(blank=True, limit_choices_to={'parent__isnull': True}, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='children', to='gallery.album', verbose_name='Parent Album')),
                 ('location', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='albums', to='gallery.location', verbose_name='Location')),
             ],
             options={
                 'verbose_name_plural': 'Albums',
+                'ordering': ('album_date',),
             },
         ),
         migrations.CreateModel(
@@ -65,6 +67,10 @@ class Migration(migrations.Migration):
                 ('likes', models.PositiveIntegerField(default=0, verbose_name='Likes')),
                 ('album', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='photos', to='gallery.album', verbose_name='Album')),
             ],
+            options={
+                'verbose_name_plural': 'Photos',
+                'ordering': ('-taken_at',),
+            },
         ),
         migrations.AddField(
             model_name='album',

gallery/models/album.py

@@ -1,5 +1,6 @@
 from datetime import datetime
 
+from django.core.exceptions import ValidationError
 from django.db import models
 from django.templatetags.static import static
 from django.urls import reverse
@@ -7,12 +8,11 @@ from django.utils.text import slugify
 
 from gallery.models.location import Location
 
-#from gallery.models.photo import Photo
-
 
 class Album(models.Model):
     name = models.CharField(max_length=150, unique=True, verbose_name="Album")
     slug = models.SlugField(max_length=150, unique=True, verbose_name="Slug")
+    parent = models.ForeignKey('self', on_delete=models.SET_NULL, blank=True, null=True, limit_choices_to={'parent__isnull': True}, related_name='children', verbose_name="Parent Album")
     location = models.ForeignKey(Location, blank=True, null=True, on_delete=models.SET_NULL, related_name='albums', verbose_name="Location")
     album_date = models.DateField(default=datetime.now, verbose_name="Album Date")
     cover = models.ForeignKey("Photo", blank=True, null=True, on_delete=models.SET_NULL, related_name='cover_to', verbose_name="Album cover")
@@ -31,6 +31,11 @@ class Album(models.Model):
             return random_cover.photo.url
         return static('img/placeholder.png')
     
+    def clean(self):
+        super().clean()
+        if self.parent and self.parent == self:
+            raise ValidationError({'parent': "An album cannot be its own parent."})
+
     def save(self, *args, **kwargs):
         if not self.slug:
             self.slug = slugify(self.name)
@@ -41,6 +46,7 @@ class Album(models.Model):
 
     class Meta:
         verbose_name_plural = "Albums"
+        ordering = ('album_date',)
 
     def __str__(self):
         return '{}'.format(self.name)