如何在 Ruby on Rails 中为相关对象创建删除链接？
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How to create a delete link for a related object in Ruby on Rails?
提问by Artilheiro
So let's say I have Posts and Comments and the url for show is /posts/1/comments/1. I want to create a link to delete that comment in the comments controller destroy method. How do I do that?
所以假设我有帖子和评论，并且显示的 url 是/posts/1/comments/1. 我想创建一个链接以在评论控制器销毁方法中删除该评论。我怎么做？
回答by Ian Bishop
<%= link_to 'Destroy', post_comment_path(@post, comment),
data: {:confirm => 'Are you sure?'}, :method => :delete %>
in comments controller:
在评论控制器中：
def destroy
@post = Post.find(params[:post_id])
@comment = Comment.find(params[:id])
@comment.destroy
respond_to do |format|
format.html { redirect_to post_comments_path(@post) }
format.xml { head :ok }
end
end
回答by Kostas Rousis
Since some time ago, the confirmoption has to be included in a datahash, otherwise it will be silently ignored:
从前一段时间开始，该confirm选项必须包含在data哈希中，否则将被静默忽略：
<%= link_to 'Destroy', post_comment_path(@post, comment),
data: { confirm: 'Are you sure?' }, method: :delete %>
回答by aks
Sometimes when you have <span>, <i>or nested elements inside of a <a>tag this way link_to use is difficult. You can inseted use raw HTML which is easy to handle, like so:
有时，当你有<span>，<i>或内部嵌套元素<a>标签这样的link_to使用是困难的。您可以插入使用易于处理的原始 HTML，如下所示：
<a class="btn btn-sm" href="/blogs/<%[email protected]%>" data-method="delete">
<i class="pg-trash"></i><span class="bold">Delete</span>
</a>
