Allow discord_uuid field to be blank on Player model

GeoffreyApp/api/commands.py

@@ -138,7 +138,7 @@ def add_location(x_pos, z_pos, name=None, discord_uuid=None, mc_uuid=None, loc_t
 
 
 @command(RequestTypes.POST)
-def register(player_name, discord_uuid):
+def register(player_name, discord_uuid=None):
     """
     :request: POST
     :param player_name: Minecraft in-game name
@@ -153,7 +153,7 @@ def register(player_name, discord_uuid):
     try:
         player = get_player(mc_uuid=mc_uuid)
 
-        if len(discord_uuid) != 0 and len(player.discord_uuid) == 0:
+        if discord_uuid is not None and player.discord_uuid == "":
             player.discord_uuid = discord_uuid
             player.save()
             return player.json

GeoffreyApp/migrations/0004_auto_20191223_1610.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.1.2 on 2019-12-23 16:10
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('GeoffreyApp', '0003_apitoken_model_api_perm'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='player',
+            name='discord_uuid',
+            field=models.CharField(blank=True, max_length=50, unique=True),
+        ),
+    ]

GeoffreyApp/models.py

@@ -78,7 +78,7 @@ class Player(models.Model):
     Minecraft UUID
     """
 
-    discord_uuid = models.CharField(max_length=50, unique=True)
+    discord_uuid = models.CharField(max_length=50, unique=True, blank=True)
     """
     Discord UUID
     """