Description: 这项评估扩展了拍卖项目，使项目进行分组和显示的类别。该系统的注册用户将有能力选择一个类别时，张贴广告。该系统可以过滤广告的名单并定期类别的用户。两个过滤器存在。第一个过滤器只显示那些项目，在选定的类别出现。第二个过滤器显示这些项目出现在所选类别及其所有子类别。
为了完成这项工作，你将完成类的实现类和类类别。-This assessment extends the Auction project to allow items to be grouped and displayed in categories. Registered users of the system will have the ability to choose a category when posting an advertisement. Regular users of the system can filter the list of advertisements based on category. Two filters exist. The first filter displays only those items that appear in a selected category. The second filter displays those items that appear in a selected category and all of its sub-categories.
To complete this exercise, you will complete the implementation of class Category and class Categories.
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Author:zhai |
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