资源列表调整

app/controllers/files_controller.rb

@@ -367,9 +367,9 @@ class FilesController < ApplicationController
       @category_name = category.try(:module_name)
     else
       @category = CourseSecondCategory.find category_id
-      @category_id = category.try(:id)
+      @category_id = @category.try(:id)
-      @category_name = category.try(:name)
+      @category_name = @category.try(:name)
-      @parent_category_id = category&.parent_id.to_i
+      @parent_category_id = @category&.parent_id.to_i
     end
   end