![](/img/trans.png)
[英]Ruby on Rails - routing error when using nested resources with form helper
[英]Rails 4 routing error with nested comments form using nested resources
我正在按照本教程http://www.sitepoint.com/nested-comments-rails/来实现图像板的嵌套注释。 直到我将“注释”归入“木板”,然后不得不嵌套我的路线,它才能正常工作。
这是我的路线:
Rails.application.routes.draw do
root "boards#index"
devise_for :users do
get '/users/sign_out' => 'devise/sessions#destroy'
end
resources :boards do
resources :comments
get '/comments/new/(:parent_id)', to: 'comments#new', as: :new_comment
get '/comments/(:parent_id)', to: 'comments#destroy', as: :delete_comment
get '/comments/edit/(:parent_id)', to: 'comments#edit', as: :edit_comment
end
end
这是我的表格:
<%= form_for [@board, @comment] do |f| %>
<% if @comment.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@comment.errors.count, "error") %> prohibited this comment from being saved:</h2>
<ul>
<% @comment.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<%= f.hidden_field :parent_id %>
<div class="form-group">
<% if @comment.parent_id == nil %>
<%= f.label :title %>
<%= f.text_field :title, class: 'form-control' %>
<% else %>
<% nil %>
<% end %>
</div>
<div class="form-group">
<%= f.radio_button(:user_id, current_user.id) %>
<%= f.label(:user_id, "I want to post as myself") %>
<%= f.radio_button(:user_id, nil) %>
<%= f.label(:user_id, "I want to post anonymously") %>
</div>
<div class="form-group">
<%= f.label :content %>
<%= f.text_area :content, class: 'form-control', required: true %>
</div>
<div class="form-group">
<%= f.label :image %>
<%= f.file_field :image %>
</div>
<%= f.submit class: 'btn btn-primary' %>
<% end %>
这是我的控制器:
class CommentsController < ApplicationController
def index
@comments = Comment.hash_tree
end
def new
@comment = Comment.new(parent_id: params[:parent_id])
end
def edit
@comment = Comment.find(params[:parent_id])
end
def create
if params[:comment][:parent_id].to_i > 0
parent = Comment.find_by_id(params[:comment].delete(:parent_id))
@comment = parent.children.build(comment_params)
else
@comment = Comment.new(comment_params)
end
if @comment.save
redirect_to root_url
else
render 'new'
end
end
def update
@comment = Comment.find(params[:id])
if @comment.update(comment_params)
redirect_to @comment
else
render 'edit'
end
end
def make_parent
@comment.parent_id = nil
@comment.save
end
def destroy
@comment = Comment.find(params[:parent_id])
@comment.destroy
respond_to do |format|
format.html { redirect_to comments_url }
end
authorize! :destroy, @comment
end
private
def comment_params
params.require(:comment).permit(:title, :content, :user_id, :image)
end
end
我尝试在表单中设置自定义路线,但至少会显示该表单,但是当您单击“提交”按钮时,它会返回“没有路线与[POST]“ / boards / 1 / comments / new”匹配。 如果我到达控制器,然后将相应的“ get”更改为“ post”,则按“提交”后,表单将重新出现,并且没有任何内容添加到数据库中。 我还按照我的教练的建议尝试了浅层嵌套路线,但这没有用。
您的董事会和评论之间的关联必须是:
board.rb
has_many :comments
comment.rb
belongs_to :user
的routes.rb
resources :boards do
resources :comments, only: [:new, :edit, :destroy]
end
这将创建一条路线
new_board_comment GET /boards/:board_id/comments/new(.:format) comments#new
edit_board_comment GET /boards/:board_id/comments/:id/edit(.:format) comments#edit
board_comment DELETE /boards/:board_id/comments/:id(.:format) comments#destroy
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.