路线存在，但无法破坏对象，为什么？
我无法销毁具有有效路线的对象。浏览器返回没有路由匹配[POST]“/blog/topics/3/posts/1”。不过，我可以对同一资源执行所有其他操作。如果我可以从控制台创建和销毁对象，我的控制器、模板应该是什么样子？
节省时间 - 这些路由在我当前的配置下也不起作用：
- link_to([@topic, @post]) 返回
- link_to([@topic]) 返回 http://localhost:3000/blog/topics/3 /posts/1。 #仍然不会删除
这是我的控制器：
class Blog::PostsController < ApplicationController
before_filter :fetch_topic, except: [:index]
before_filter :fetch_post, except: [:create, :new]
#stuff that works.
..
..
..
def destroy
@post.destroy
respond_to do |format|
format.html { redirect_to blog_topic_posts_url, notice: 'Post deleted.'}
end
#DOES NOT work: redirect_to root_url([:blog, @topic, @post]), notice: 'Post deleted.'
end
private
def fetch_post
@post = @topic.posts.find(params[:id])
end
def fetch_topic
@topic = Topic.find(params[:topic_id])
end
这是我的模板：
<%= link_to 'Destroy', blog_topic_post_path(@topic, @post), method: :destroy, confirm: 'You Sure About This?' %>
I am unable to destroy an object with a valid route. Browser returns No route matches [POST] "/blog/topics/3/posts/1". However I can perform all other actions on the same resource. How should my controller, template look given I can create and destroy the object from the console?
Save time-these routes don't work either under my current config:
- link_to([@topic, @post]) returns http://localhost:3000/blog/topics/3/1/posts/1.
- link_to([@topic]) returns http://localhost:3000/blog/topics/3/posts/1. #Still does not delete
Here is my controller:
class Blog::PostsController < ApplicationController
before_filter :fetch_topic, except: [:index]
before_filter :fetch_post, except: [:create, :new]
#stuff that works.
..
..
..
def destroy
@post.destroy
respond_to do |format|
format.html { redirect_to blog_topic_posts_url, notice: 'Post deleted.'}
end
#DOES NOT work: redirect_to root_url([:blog, @topic, @post]), notice: 'Post deleted.'
end
private
def fetch_post
@post = @topic.posts.find(params[:id])
end
def fetch_topic
@topic = Topic.find(params[:topic_id])
end
Here is my template:
<%= link_to 'Destroy', blog_topic_post_path(@topic, @post), method: :destroy, confirm: 'You Sure About This?' %>
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评论（2）
我认为你的 link_to 可能是错误的。查看 RoR API link_to 选项应该就像
:method =>; ：删除，：确认=> “你确定吗？”。此外，您的
:fetch_post过滤器不会针对操作destroy运行，因此您不会有@post或@topic< /code> 就此而言，因为:fetch_topic也不会被调用。I think your link_to might be wrong. Looking on the RoR API the link_to options should be like
:method => :delete, :confirm => "Are you sure?".Also, your
:fetch_postfilter doesn't run for actiondestroy, so you won't have@postor@topicfor that matter, because:fetch_topicdoesn't get called either.它应该是
method: :delete。It should be
method: :delete.