Make meta not-null.

django_etesync/migrations/0033_auto_20200317_2010.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.3 on 2020-03-17 20:10
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_etesync', '0032_auto_20200317_1513'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='collectionitemrevision',
+            name='meta',
+            field=models.BinaryField(default=b'', editable=True),
+            preserve_default=False,
+        ),
+    ]

django_etesync/models.py

@@ -86,7 +86,7 @@ class CollectionItemRevision(models.Model):
     uid = models.CharField(db_index=True, unique=True, blank=False, null=False,
                            max_length=44, validators=[Base64Url256BitValidator])
     item = models.ForeignKey(CollectionItem, related_name='revisions', on_delete=models.CASCADE)
-    meta = models.BinaryField(editable=True, blank=True, null=True)
+    meta = models.BinaryField(editable=True, blank=False, null=False)
     chunks = models.ManyToManyField(CollectionItemChunk, related_name='items')
     current = models.BooleanField(db_index=True, default=True, null=True)
     deleted = models.BooleanField(default=False)