In the controller, the index method merely reflects the show action with no page identifier, thus rendering the home page.
在该控制器中，index方法仅仅反映没有页面标示符的show操作，从而呈现主页面。
If you have a home page, you need an index function.
如果使用主页，就需要一个index函数。
A Web site's usual starting point or opening page, called a home page, usually functions as a table of contents or index, with links to other sections of the site.
网站通常的起点或开启网页称为首页，一般作为内容或索引的列表，连接到网站的其它部分。
A Web site's usual starting point or opening page, called a home page, usually functions as a table of contents or index, with links to other sections of the site.
网站通常的起点或开启网页称为首页，一般作为内容或索引的列表，连接到网站的其它部分。
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