first commit

media/admin.py

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+from django.contrib import admin
+from django.utils.html import format_html
+from .models import Photo
+
+@admin.register(Photo)
+class PhotoAdmin(admin.ModelAdmin):
+    list_display = ('thumbnail_preview', 'content_type', 'content_object', 'caption', 'is_primary', 'created_at')
+    list_filter = ('content_type', 'is_primary', 'created_at')
+    search_fields = ('caption', 'alt_text')
+    readonly_fields = ('thumbnail_preview',)
+    
+    def thumbnail_preview(self, obj):
+        if obj.image:
+            return format_html(
+                '<img src="{}" style="max-height: 50px; max-width: 100px;" />',
+                obj.image.url
+            )
+        return "No image"
+    thumbnail_preview.short_description = 'Thumbnail'

media/apps.py

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+from django.apps import AppConfig
+
+class MediaConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'media'
+    verbose_name = 'Media'

media/migrations/0001_initial.py

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+# Generated by Django 5.1.2 on 2024-10-28 20:17
+
+import django.db.models.deletion
+import media.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Photo',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('image', models.ImageField(upload_to=media.models.photo_upload_path)),
+                ('caption', models.CharField(blank=True, max_length=255)),
+                ('alt_text', models.CharField(blank=True, max_length=255)),
+                ('is_primary', models.BooleanField(default=False)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('object_id', models.PositiveIntegerField()),
+                ('content_type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='contenttypes.contenttype')),
+            ],
+            options={
+                'ordering': ['-is_primary', '-created_at'],
+                'indexes': [models.Index(fields=['content_type', 'object_id'], name='media_photo_content_0187f5_idx')],
+            },
+        ),
+    ]

media/models.py

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+from django.db import models
+from django.contrib.contenttypes.fields import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType
+from django.utils.text import slugify
+import os
+
+def photo_upload_path(instance, filename):
+    """Generate upload path for photos"""
+    # Get the content type and object
+    content_type = instance.content_type.model
+    obj = instance.content_object
+    
+    # Get object identifier (slug or id)
+    identifier = getattr(obj, 'slug', obj.id)
+    
+    # Create path: content_type/identifier/filename
+    base, ext = os.path.splitext(filename)
+    new_filename = f"{slugify(base)}{ext}"
+    return f"{content_type}/{identifier}/{new_filename}"
+
+class Photo(models.Model):
+    """Generic photo model that can be attached to any model"""
+    image = models.ImageField(upload_to=photo_upload_path)
+    caption = models.CharField(max_length=255, blank=True)
+    alt_text = models.CharField(max_length=255, blank=True)
+    is_primary = models.BooleanField(default=False)
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+    
+    # Generic foreign key fields
+    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
+    object_id = models.PositiveIntegerField()
+    content_object = GenericForeignKey('content_type', 'object_id')
+    
+    class Meta:
+        ordering = ['-is_primary', '-created_at']
+        indexes = [
+            models.Index(fields=['content_type', 'object_id']),
+        ]
+    
+    def __str__(self):
+        return f"{self.content_type} - {self.content_object} - {self.caption or 'No caption'}"
+    
+    def save(self, *args, **kwargs):
+        # If this is marked as primary, unmark other primary photos
+        if self.is_primary:
+            Photo.objects.filter(
+                content_type=self.content_type,
+                object_id=self.object_id,
+                is_primary=True
+            ).exclude(id=self.id).update(is_primary=False)
+        super().save(*args, **kwargs)