如何在Ruby on Rails中为相关对象创建删除链接？

Question

所以,假设我有帖子和评论,而节目的网址是/posts/1/comments/1.我想在comments controller destroy方法中创建一个删除该注释的链接.我怎么做？

Answer 1

<%= link_to 'Destroy', post_comment_path(@post, comment),
            data: {:confirm => 'Are you sure?'}, :method => :delete %>

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

Answer 2

从一段时间以前,该confirm选项必须包含在data哈希中,否则将被忽略:

<%= link_to 'Destroy',  post_comment_path(@post, comment),
    data: { confirm: 'Are you sure?' }, method: :delete %>

Answer 3

@post鉴于您的帖子对象有变量

Rails 7 之前

<%= link_to 'Delete comment', post_comment_path(@post, comment),
  method: :delete, data: {confirm: 'Are you sure?'} %>

Rails 7（带 Turbo，开箱即用）

<%= link_to 'Delete comment', post_comment_path(@post, comment),
  data: {turbo_method: :delete, turbo_confirm: 'Are you sure?'} %>