display name uniqueness

frontend/migrations/0002_userprofile_display_name_unique.py

@@ -0,0 +1,15 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("frontend", "0001_userprofile"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="userprofile",
+            name="display_name",
+            field=models.CharField(max_length=150, unique=True),
+        ),
+    ]