Small after review updates

app/controllers/application_controller.rb

@@ -17,8 +17,4 @@ def set_menu_context
     @tags = policy_scope(Tag, policy_scope_class: TagPolicy::Scope).where(visible: true)
     @menu = SidebarMenu.new(controller_name, action_name, { tags: @tags })
   end
-
-  def render_forbidden(key, value: nil)
-    render status: :forbidden, json: { message: I18n.t("forbidden.#{key}", value: value, locale: :en) }
-  end
 end

app/controllers/message_drafts_imports_controller.rb

@@ -7,9 +7,8 @@ def create
     file_storage = FileStorage.new
 
     zip_content = params[:content]
-    import = MessageDraftsImport.create!(
-      name: "#{Time.now.to_i}_#{zip_content.original_filename}",
-      box: @box
+    import = @box.message_drafts_imports.create!(
+      name: "#{Time.now.to_i}_#{zip_content.original_filename}"
     )
 
     import_path = file_storage.store("imports", import_path(import), zip_content.read.force_encoding("UTF-8"))
@@ -33,7 +32,6 @@ def import_path(import)
   def load_box
     return unless params[:box_id].present?
 
-    @box = Box.find(params[:box_id].to_i)
-    render_forbidden(:box_id, value: params[:box_id]) unless @box.tenant == Current.tenant
+    @box = Current.tenant.boxes.find(params[:box_id])
   end
 end

config/locales/en.yml

@@ -31,5 +31,3 @@
 
 en:
   hello: "Hello world"
-  forbidden:
-    box_id: 'Forbidden box ID: %{value}'