feat(settings): add join token

pretalx_musicrate/migrations/0003_musicratesettings_join_token.py

@@ -0,0 +1,21 @@
+# Generated by Django 4.2.8 on 2023-12-15 01:30
+
+from django.db import migrations, models
+
+import pretalx_musicrate.models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("pretalx_musicrate", "0002_musicratesettings_genre_question_and_more"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="musicratesettings",
+            name="join_token",
+            field=models.CharField(
+                default=pretalx_musicrate.models.generate_token, max_length=43
+            ),
+        ),
+    ]

pretalx_musicrate/models.py

@@ -1,7 +1,13 @@
+from secrets import token_urlsafe
+
 from django.db import models
 from django.utils.translation import gettext_lazy as _
 
 
+def generate_token():
+    return token_urlsafe(32)
+
+
 class MusicrateSettings(models.Model):
     event = models.OneToOneField(
         to="event.Event",
@@ -33,3 +39,4 @@ class MusicrateSettings(models.Model):
         blank=True,
         null=True,
     )
+    join_token = models.CharField(max_length=43, default=generate_token)