feat: added print_count api, added merchant setting model, added manual mode setting for purchase order

api_v1/admin.py

@@ -1,5 +1,7 @@
 from django.contrib import admin
+from django.contrib.admin import action
 from api_v1.models import UploadedFile
+from .tasks import backup_database
 
 
 @admin.register(UploadedFile)
@@ -10,7 +12,12 @@ class UploadedFileAdmin(admin.ModelAdmin):
     readonly_fields = ['created_at', 'file_size', 'content_type']
     date_hierarchy = 'created_at'
     ordering = ['-created_at']
+    actions = ['backup_database']
     
     def get_queryset(self, request):
         # 在管理界面显示所有文件，包括已删除的
         return super().get_queryset(request).select_related('owner')
+
+    @action(description='备份数据库')
+    def backup_database(self, request, queryset):
+        backup_database.delay()