ticket model and admin add ticket category

backend/ticket/admin.py

@@ -6,6 +6,13 @@ from import_export.admin import ImportExportModelAdmin
 from unfold.contrib.import_export.forms import ExportForm, ImportForm, SelectableFieldsExportForm
 from unfold.contrib.forms.widgets import ArrayWidget, WysiwygWidget
 from django.contrib.postgres.fields import ArrayField
+from unfold.contrib.filters.admin import (
+    ChoicesDropdownFilter,
+    MultipleChoicesDropdownFilter,
+)
+
+
+
 
 class MessageInline(TabularInline):
     model = Message
@@ -16,9 +23,9 @@ class TicketAdmin(ModelAdmin, ImportExportModelAdmin):
     import_form_class = ImportForm
     export_form_class = ExportForm
     
-    search_fields = ['subject',]
-    list_filter = ['status']
-
+    search_fields = ['subject', 'messages__content']
+    list_filter = [('status', ChoicesDropdownFilter), ('ticket_category', ChoicesDropdownFilter)]
+    list_filter_submit = True
     compressed_fields = True
     warn_unsaved_form = True
 
@@ -27,7 +34,8 @@ class TicketAdmin(ModelAdmin, ImportExportModelAdmin):
             "widget": ArrayWidget,
         }
     }
-    list_display = ['subject', 'customer', 'admin', 'status', 'admin', 'status', 'created_at']
+    readonly_fields = ('created_at', 'updated_at')
+    list_display = ['subject', 'ticket_category', 'customer', 'admin', 'status', 'created_at']
     inlines = [MessageInline]
     radio_fields = {'status': admin.VERTICAL}