Chunks: move to reside under the collection.

django_etebase/migrations/0023_collectionitemchunk_collection.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.3 on 2020-08-04 12:08
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_etebase', '0022_auto_20200804_1059'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='collectionitemchunk',
+            name='collection',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='chunks', to='django_etebase.Collection'),
+        ),
+    ]

django_etebase/migrations/0024_auto_20200804_1209.py

@@ -0,0 +1,22 @@
+# Generated by Django 3.0.3 on 2020-08-04 12:09
+
+from django.db import migrations
+
+
+def change_chunk_to_collections(apps, schema_editor):
+    CollectionItemChunk = apps.get_model('django_etebase', 'CollectionItemChunk')
+
+    for chunk in CollectionItemChunk.objects.all():
+        chunk.collection = chunk.item.collection
+        chunk.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_etebase', '0023_collectionitemchunk_collection'),
+    ]
+
+    operations = [
+        migrations.RunPython(change_chunk_to_collections),
+    ]

django_etebase/migrations/0025_auto_20200804_1216.py

@@ -0,0 +1,27 @@
+# Generated by Django 3.0.3 on 2020-08-04 12:16
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_etebase', '0024_auto_20200804_1209'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='collectionitemchunk',
+            name='collection',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='chunks', to='django_etebase.Collection'),
+        ),
+        migrations.AlterUniqueTogether(
+            name='collectionitemchunk',
+            unique_together={('collection', 'uid')},
+        ),
+        migrations.RemoveField(
+            model_name='collectionitemchunk',
+            name='item',
+        ),
+    ]

django_etebase/models.py

@@ -85,23 +85,22 @@ def chunk_directory_path(instance, filename):
     if custom_func is not None:
         return custom_func(instance, filename)
 
-    item = instance.item
-    col = item.collection
+    col = instance.collection
     user_id = col.owner.id
-    return Path('user_{}'.format(user_id), col.uid, item.uid, instance.uid)
+    return Path('user_{}'.format(user_id), col.uid, instance.uid)
 
 
 class CollectionItemChunk(models.Model):
     uid = models.CharField(db_index=True, blank=False, null=False,
                            max_length=60, validators=[UidValidator])
-    item = models.ForeignKey(CollectionItem, related_name='chunks', on_delete=models.CASCADE)
+    collection = models.ForeignKey(Collection, related_name='chunks', on_delete=models.CASCADE)
     chunkFile = models.FileField(upload_to=chunk_directory_path, max_length=150, unique=True)
 
     def __str__(self):
         return self.uid
 
     class Meta:
-        unique_together = ('item', 'uid')
+        unique_together = ('collection', 'uid')
 
 
 def generate_stoken_uid():

django_etebase/serializers.py

@@ -37,7 +37,7 @@ def process_revisions_for_item(item, revision_data):
             content = chunk[1]
             # If the chunk already exists we assume it's fine. Otherwise, we upload it.
             if chunk_obj is None:
-                chunk_obj = models.CollectionItemChunk(uid=uid, item=item)
+                chunk_obj = models.CollectionItemChunk(uid=uid, collection=item.collection)
                 chunk_obj.chunkFile.save('IGNORED', ContentFile(content))
                 chunk_obj.save()
         else:

django_etebase/views.py

@@ -416,7 +416,7 @@ class CollectionItemChunkViewSet(viewsets.ViewSet):
 
     def update(self, request, *args, collection_uid=None, collection_item_uid=None, uid=None, **kwargs):
         col = get_object_or_404(self.get_collection_queryset(), main_item__uid=collection_uid)
-        col_it = get_object_or_404(col.items, uid=collection_item_uid)
+        # IGNORED FOR NOW: col_it = get_object_or_404(col.items, uid=collection_item_uid)
 
         data = {
             "uid": uid,
@@ -426,7 +426,7 @@ class CollectionItemChunkViewSet(viewsets.ViewSet):
         serializer = self.get_serializer_class()(data=data)
         serializer.is_valid(raise_exception=True)
         try:
-            serializer.save(item=col_it)
+            serializer.save(collection=col)
         except IntegrityError:
             return Response(
                 {"code": "chunk_exists", "detail": "Chunk already exists."},
@@ -441,8 +441,8 @@ class CollectionItemChunkViewSet(viewsets.ViewSet):
         from django.views.static import serve
 
         col = get_object_or_404(self.get_collection_queryset(), main_item__uid=collection_uid)
-        col_it = get_object_or_404(col.items, uid=collection_item_uid)
-        chunk = get_object_or_404(col_it.chunks, uid=uid)
+        # IGNORED FOR NOW: col_it = get_object_or_404(col.items, uid=collection_item_uid)
+        chunk = get_object_or_404(col.chunks, uid=uid)
 
         filename = chunk.chunkFile.path
         dirname = os.path.dirname(filename)