接收在提交评论表单

Question

从岗位，如果第一个评论已创建＃秀查看评论只能加到路由错误，否则就抛出此路由错误：

No route matches {:action=>"show", :controller=>"posts", :view=>"comments"} 

终端读取：

Started POST "/comments" for 127.0.0.1 at 2011-05-17 18:18:03 -0700 
    Processing by CommentsController#create as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"BPeNvVJh+dLBhpiZK16phQHp7UV4MasPyQW6PL9VG8I=", "comment"=>{"post_id"=>"", "parent_id"=>"", "name"=>"", "content"=>"yo"}, "commit"=>"Reply"} 
AREL (0.9ms) INSERT INTO "comments" ("name", "content", "post_id", "created_at", "updated_at", "ancestry") VALUES ('', 'yo', NULL, '2011-05-18 01:18:03.445466', '2011-05-18 01:18:03.445466', NULL) 
Completed in 133ms 

ActionController::RoutingError (No route matches {:action=>"show", :controller=>"posts", :view=>"comments"}): 
    app/controllers/comments_controller.rb:14:in `block (2 levels) in create' 
    app/controllers/comments_controller.rb:9:in `create' 

如果已经创建了一个帖子第一条评论

帖子＃显示：

<%= render @post %> 

<%= nested_comments @comments.arrange(:order => :created_at) %> 

<%= render "comments/form" %> 

形式：

<%= simple_form_for :comment, :url => { :controller => :comments, :action => "create" } do |f| %> 
    <%= f.input :post_id, :required => false, :as => :hidden %> 
    <%= f.input :parent_id, :required => false, :as => :hidden %> 
    <%= f.input :name, :label => false, :placeholder => "Name (optional)", :required => false %> 
    <%= f.input :content, :label => false, :placeholder => "Reply", :as => :text %> 
    <%= f.button :submit, "Reply" %> 
<% end %> 

评论控制器：

def new 
    @comment = Comment.new(:parent_id => params[:parent_id], :post_id => params[:post_id]) 
end 

def create 
    @comment = Comment.create(params[:comment]) 
    @comment.save 
    respond_to do |format| 
    format.html do 
     if @comment.errors.present? 
     render :new 
     else 
     redirect_to(post_path(@comment.post, :view => "comments")) 
     end 
    end 
    format.js 
    end 
end 

路线：

root :to => "posts#index" 
resources :topics 
resources :posts 
resources :comments 

架构：

create_table "comments", :force => true do |t| 
    t.string "name" 
    t.text  "content" 
    t.integer "post_id" 
    t.datetime "created_at" 
    t.datetime "updated_at" 
    t.string "ancestry" 
end 

add_index "comments", ["ancestry"], :name => "index_comments_on_ancestry" 

create_table "posts", :force => true do |t| 
    t.string "name" 
    t.string "title" 
    t.text  "content" 
    t.integer "topic_id" 
    t.datetime "created_at" 
    t.datetime "updated_at" 
end 

create_table "topics", :force => true do |t| 
    t.string "name" 
    t.datetime "created_at" 
    t.datetime "updated_at" 
end 

Answer 1

我没有测试过这一点，但尝试更换

redirect_to(post_path(@comment.post, :view => "comments")) 

在你的控制器的创建操作：

redirect_to(post_path(:id => @comment.post_id, :view => "comments")) 

如果上述方法无效，我们将别的尝试一些。无论如何，这似乎是你问题的地点。

Answer 2

看起来你的表单并没有被绑定到实际的评论，因为它只是被传递了一个符号。试试这是你的看法

<%= simple_form_for @comment, :url => { :controller => :comments, :action => "create" } do |f| %> 
... 

其实这应该让你沟:url参数以及

<%= simple_form_for @comment do |f| %> 

然后就可以确保你在你的控制器定义@comment并设置post_id

@comment = Comment.new 
@comment.post_id = @post.id