Merge pull request #2729 from gitcoinco/kevin/handle_unique

makes profile.handle unique

app/dashboard/migrations/0112_auto_20181107_2208.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.1.2 on 2018-11-07 22:08
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dashboard', '0111_auto_20181101_1922'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='profile',
+            name='handle',
+            field=models.CharField(db_index=True, max_length=255, unique=True),
+        ),
+    ]

app/dashboard/models.py

@@ -1560,7 +1560,7 @@ class Profile(SuperModel):
 
     user = models.OneToOneField(User, on_delete=models.SET_NULL, null=True, blank=True)
     data = JSONField()
-    handle = models.CharField(max_length=255, db_index=True)
+    handle = models.CharField(max_length=255, db_index=True, unique=True)
     avatar = models.ForeignKey('avatar.Avatar', on_delete=models.SET_NULL, null=True, blank=True)
     last_sync_date = models.DateTimeField(null=True)
     email = models.CharField(max_length=255, blank=True, db_index=True)