add payer to list_filter

fet2020/finance/admin.py

@@ -68,7 +68,7 @@ class BillAdmin(admin.ModelAdmin):
     ]
 
     actions = ["make_cleared", "make_finished"]
-    list_filter = ["status", "affiliation"]
+    list_filter = ["status", "affiliation", "payer"]
     ordering = ["date_created"]
     search_fields = ["purpose"]
 

fet2020/finance/models.py

@@ -140,7 +140,11 @@ class Bill(models.Model):
         ME = "M", "Privat"
         VEREIN = "V", "Verein (Safe/Kreditkarte)"
 
-    payer = models.CharField(max_length=1, choices=Payer.choices)
+    payer = models.CharField(
+        max_length=1,
+        choices=Payer.choices,
+        verbose_name="Wie wurde die Rechnung bezahlt?",
+    )
 
     only_digital = models.BooleanField(default=False, verbose_name="Digitale Rechnung")