Remove voucher columns from Grant model

backend/grants/admin.py

@@ -1,3 +1,4 @@
+import logging
 from django.db import transaction
 from custom_admin.audit import (
     create_addition_admin_log_entry,
@@ -31,12 +32,15 @@
 from submissions.models import Submission
 from .models import Grant, GrantConfirmPendingStatusProxy
 from django.db.models import Exists, OuterRef, F
+from pretix import user_has_admission_ticket
 
 from django.contrib.admin import SimpleListFilter
 from participants.models import Participant
 from django.urls import reverse
 from django.utils.safestring import mark_safe
 
+logger = logging.getLogger(__name__)
+
 EXPORT_GRANTS_FIELDS = (
     "name",
     "full_name",
@@ -407,10 +411,10 @@ class GrantAdmin(ExportMixin, ConferencePermissionMixin, admin.ModelAdmin):
         "accommodation_amount",
         "total_amount",
         "country_type",
+        "user_has_ticket",
+        "has_voucher",
         "applicant_reply_sent_at",
         "applicant_reply_deadline",
-        "voucher_code",
-        "voucher_email_sent_at",
         "created",
     )
     list_filter = (
@@ -461,9 +465,6 @@ class GrantAdmin(ExportMixin, ConferencePermissionMixin, admin.ModelAdmin):
                     "total_amount",
                     "applicant_reply_sent_at",
                     "applicant_reply_deadline",
-                    "pretix_voucher_id",
-                    "voucher_code",
-                    "voucher_email_sent_at",
                     "internal_notes",
                 )
             },
@@ -560,6 +561,29 @@ def emoji_gender(self, obj):
         }
         return emoji[gender]
 
+    @admin.display(
+        boolean=True,
+    )
+    def user_has_ticket(self, obj: Grant) -> bool:
+        if not obj.user_id:
+            return None
+
+        try:
+            return user_has_admission_ticket(
+                email=obj.user.email,
+                event_organizer=obj.conference.pretix_organizer_id,
+                event_slug=obj.conference.pretix_event_id,
+            )
+        except Exception as e:
+            logger.error(e)
+            return None
+
+    @admin.display(
+        boolean=True,
+    )
+    def has_voucher(self, obj: Grant) -> bool:
+        return obj.has_voucher
+
     def get_queryset(self, request):
         qs = (
             super()
@@ -577,8 +601,16 @@ def get_queryset(self, request):
                         submission__speaker_id=OuterRef("user_id"),
                     )
                 ),
+                has_voucher=Exists(
+                    ConferenceVoucher.objects.for_conference(
+                        OuterRef("conference_id"),
+                    ).filter(
+                        user_id=OuterRef("user_id"),
+                    )
+                ),
             )
         )
+
         return qs
 
     class Media:

backend/grants/migrations/0028_remove_grant_pretix_voucher_id_and_more.py

@@ -0,0 +1,25 @@
+# Generated by Django 5.1.4 on 2025-01-28 16:45
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('grants', '0027_grantconfirmpendingstatusproxy'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='grant',
+            name='pretix_voucher_id',
+        ),
+        migrations.RemoveField(
+            model_name='grant',
+            name='voucher_code',
+        ),
+        migrations.RemoveField(
+            model_name='grant',
+            name='voucher_email_sent_at',
+        ),
+    ]

backend/grants/models.py

@@ -207,19 +207,6 @@ class ApprovedType(models.TextChoices):
     )
 
     # Voucher Management
-    voucher_code = models.TextField(
-        help_text=_("Voucher code generated for this grant."),
-        blank=True,
-        null=True,
-    )
-    pretix_voucher_id = models.IntegerField(
-        help_text=_("ID of the voucher in the Pretix database"),
-        blank=True,
-        null=True,
-    )
-    voucher_email_sent_at = models.DateTimeField(
-        help_text=_("When the email was last sent"), blank=True, null=True
-    )
     internal_notes = models.TextField(
         _("Internal Notes"),
         help_text=_("Internal notes only available to the Financial Aid Commettie"),