Add some empty defaults to Node organization fields

Should fix #199

thefederation/migrations/0019_add_some_defaults_for_node_organization_fields.py

@@ -0,0 +1,28 @@
+# Generated by Django 2.0.13 on 2019-10-30 20:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('thefederation', '0018_add_remove_commit_hash_version_clean_choice'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='node',
+            name='organization_account',
+            field=models.CharField(blank=True, default='', max_length=256),
+        ),
+        migrations.AlterField(
+            model_name='node',
+            name='organization_contact',
+            field=models.CharField(blank=True, default='', max_length=256),
+        ),
+        migrations.AlterField(
+            model_name='node',
+            name='organization_name',
+            field=models.CharField(blank=True, default='', max_length=128),
+        ),
+    ]

thefederation/models/node.py

@@ -33,9 +33,9 @@ class Node(ModelBase):
     last_success = models.DateTimeField(null=True, db_index=True)
     name = models.CharField(max_length=300)
     open_signups = models.BooleanField()
-    organization_account = models.CharField(max_length=256, blank=True)
-    organization_contact = models.CharField(max_length=256, blank=True)
-    organization_name = models.CharField(max_length=128, blank=True)
+    organization_account = models.CharField(max_length=256, blank=True, default="")
+    organization_contact = models.CharField(max_length=256, blank=True, default="")
+    organization_name = models.CharField(max_length=128, blank=True, default="")
     protocols = models.ManyToManyField('thefederation.Protocol', related_name='nodes', blank=True)
     relay = EnumField(Relay, default=Relay.NONE)
     server_meta = JSONField(default={}, blank=True)