model travel is now based on extern instead of intern, service id is displayed and a readonly field

input/admin.py

@@ -90,12 +90,13 @@ class IFGAdmin(admin.ModelAdmin):
 @admin.register(Travel)
 class TravelAdmin(admin.ModelAdmin):
     save_as = True
-    search_fields = ['realname', 'granted_date']
-    list_display = ('realname', 'granted', 'granted_date', 'project_end', 'project', 'project_end_quartal')
+    search_fields = ['realname', 'service_id', 'granted_date']
+    list_display = ('realname', 'service_id', 'granted', 'granted_date', 'project_end', 'project', 'project_end_quartal')
     list_display_links = ('realname', 'project')
     date_hierarchy = 'project_end'
     readonly_fields = ('project_end_quartal', 'project_end')
     autocomplete_fields = ['project']
+    readonly_fields = ['service_id']
 
 @admin.register(Email)
 class EmailAdmin(admin.ModelAdmin):

input/migrations/0089_auto_20221209_1648.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.1.2 on 2022-12-09 16:48
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('input', '0088_auto_20221208_2128'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='travel',
+            name='service_id',
+            field=models.CharField(blank=True, max_length=15, null=True),
+        ),
+        migrations.AddField(
+            model_name='travel',
+            name='username',
+            field=models.CharField(help_text='Bitte gib den Namen ein, mit dem du dich<br>in den Wikimedia-Projekten registriert hast.', max_length=200, null=True, verbose_name='Benutzer_innenname'),
+        ),
+    ]

input/models.py

@@ -179,7 +179,7 @@ HOTEL_CHOICES = {'TRUE': format_html('Hotelzimmer benötigt'),
 
 from django.contrib.contenttypes.models import ContentType
 
-class Travel(Volunteer):
+class Travel(Extern):
     # project variable is now null true and blank true, which means it can be saved without project id to be later on filled out by admins
     project = models.ForeignKey(Project, on_delete=models.CASCADE, null=True, blank=True)
     project_name = models.CharField(max_length=50, null=True, blank=True, verbose_name='Projektname:')