fix(controller): review table structure

Author: duanhongyi

rootfs/api/migrations/0001_initial.py

@@ -239,7 +239,7 @@ class Migration(migrations.Migration):
                 ('uuid', models.UUIDField(auto_created=True, default=uuid.uuid4, editable=False, primary_key=True, serialize=False, unique=True, verbose_name='UUID')),
                 ('created', models.DateTimeField(auto_now_add=True)),
                 ('updated', models.DateTimeField(auto_now=True)),
-                ('name', models.CharField(max_length=63, unique=True, validators=[api.models.validate_label])),
+                ('name', models.CharField(max_length=63, validators=[api.models.validate_label])),
                 ('size', models.CharField(max_length=128)),
                 ('path', jsonfield.fields.JSONField(blank=True, default={})),
                 ('app', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='api.App')),

rootfs/api/models/volume.py

@@ -13,11 +13,8 @@ class Volume(UuidAuditedModel):
     owner = models.ForeignKey(settings.AUTH_USER_MODEL,
                               on_delete=models.PROTECT)
     app = models.ForeignKey('App', on_delete=models.CASCADE)
-
-    name = models.CharField(max_length=63, unique=True,
-                            validators=[validate_label])
-    size = models.CharField(max_length=128, blank=False, null=False,
-                            unique=False)
+    name = models.CharField(max_length=63, validators=[validate_label])
+    size = models.CharField(max_length=128)
     path = JSONField(default={}, blank=True)
 
     class Meta: