Delete and retry tasks through Django Admin

Author: mgax

django_tasks/backends/database/admin.py

@@ -3,9 +3,16 @@
 from django.contrib import admin
 from django.http import HttpRequest
 
+from django_tasks.task import ResultStatus
+
 from .models import DBTaskResult
 
 
+def retry(modeladmin: "DBTaskResultAdmin", request, queryset):
+    rows = queryset.update(status=ResultStatus.NEW)
+    modeladmin.message_user(request, f"Rescheduled {rows} tasks.", "SUCCESS")
+
+
 @admin.register(DBTaskResult)
 class DBTaskResultAdmin(admin.ModelAdmin):
     list_display = (
@@ -19,17 +26,13 @@ class DBTaskResultAdmin(admin.ModelAdmin):
         "queue_name",
     )
     list_filter = ("status", "priority", "queue_name")
+    actions = [retry]
 
     def has_add_permission(
         self, request: HttpRequest, obj: Optional[DBTaskResult] = None
     ) -> bool:
         return False
 
-    def has_delete_permission(
-        self, request: HttpRequest, obj: Optional[DBTaskResult] = None
-    ) -> bool:
-        return False
-
     def has_change_permission(
         self, request: HttpRequest, obj: Optional[DBTaskResult] = None
     ) -> bool: