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新手问题 Rails 中 link_to 问题

supiccc · February 13, 2017 · Last by supiccc replied at February 13, 2017 · 947 hits

在 Rails 入门那里看到删除评论的代码

<%= link_to 'Destroy Comment', [comment.article, comment], method: :delete, data: { confirm: 'Are u sure?' } %>

[comment.article, comment] 这个地方很难理解，例如

<p><%= link_to 'Back', articles_path %></p>

都是直接填写地址，为什么这里用一个数组表示，又表示什么意思？ 小白求解答

flowerwrong #1 February 13, 2017

rails/ActionView/RoutingUrlFor/url_for source code. 是不是这个 url_for 不确定 (有好几个)，但是思想肯定是这个。

theblock24block #2 February 13, 2017

他下面不是解释了吗

fire off a DELETE /articles/:article_id/comments/:id to our CommentsController

supiccc #3 February 13, 2017

#1 楼 @flowerwrong 

<%= url_for(@workshop) %>
# calls @workshop.to_param which by default returns the id
# => /workshops/5

我想应该是这个吧，[comment.article, comment] 连起来表示/articles/:article_id/comments/:id

supiccc closed this topic. 13 Feb 23:29
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