我的讨论嵌套在我的项目中。项目是一个基本的CRUD，我试图使讨论相同。他们最初工作，但现在我试图添加＆＃34;编辑＆＃34;和＆＃34;销毁＆＃34;我收到此错误：No route matches {:action=>"edit", :controller=>"discussions", :format=>nil, :id=>nil, :project_id=>#<Discussion id: 24, title: "hello", description: "hello", created_at: "2015-02-02 20:58:53", updated_at: "2015-02-02 20:58:53", project_id: 12>} missing required keys: [:id]
这里的代码行<%= link_to "Edit", edit_project_discussion_path(item) %>。
discussions_controller.rb
class DiscussionsController < ApplicationController
def new
@project = Project.find(params[:project_id])
@discussion = Discussion.new
end
def create
@project = Project.find(params[:project_id])
@discussion = @project.discussions.build(discussion_params)
if @discussion.save
redirect_to new_project_discussion_path(@project)
end
end
def edit
@discussions = Discussion.find(params[:project_id])
end
def update
@discussions = Discussion.find(params[:project_id])
if @discussions.update_attributes(discussion_params)
redirect_to new_project_discussion_path
else
render "edit"
end
end
def destroy
@discussions = Discussion.find(params[:project_id])
@discussions.destroy
redirect_to new_project_discussion_path
end
def discussion_params
params.require(:discussion).permit(:project_id, :title, :description)
end
end
_form.html.erb
<%= form_for [@project, @discussion] do |f| %>
<div class="container">
Project: <%= @project.title %> <%= link_to "Go back?", projects_path %>
<hr>
<div class="form-group">
<%= f.label :title %>
<%= f.text_field :title, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :description %>
<%= f.text_area :description, class: "form-control" %>
</div>
<div class="form-group">
<%= f.submit "Submit discussion", class: "btn btn-primary" %>
</div>
</div>
<% end %>
edit.html.erb
<%= render "form" %>
new.html.erb
<div class="container">
<div class="page-header">
<h1>Discussions<small> Discuss the project.</small></h1>
</div>
</div>
<%= render "form" %>
<% if !@project.discussions.blank? %>
<% for item in @project.discussions %>
<div class="container">
<div class="panel panel-default">
<div class="panel-heading">
<%= item.title %>
</div>
</div>
<div class="panel-body">
<p>
<%= item.description %> <br>
<%= link_to "Comment", new_discussion_comment_path(item) %>
<%= link_to "Delete", item, :method => :delete %>
<%= link_to "Edit", edit_project_discussion_path(item) %> |
</p>
</div>
</div>
<% end %>
<% end %>
路线：
Controller#Action
new_user_session GET /users/sign_in(.:format) devise/sessions#new
user_session POST /users/sign_in(.:format) devise/sessions#create
destroy_user_session DELETE /users/sign_out(.:format) devise/sessions#destroy
user_password POST /users/password(.:format) devise/passwords#create
new_user_password GET /users/password/new(.:format) devise/passwords#new
edit_user_password GET /users/password/edit(.:format) devise/passwords#edit
PATCH /users/password(.:format) devise/passwords#update
PUT /users/password(.:format) devise/passwords#update
cancel_user_registration GET /users/cancel(.:format) devise/registrations#cancel
user_registration POST /users(.:format) devise/registrations#create
new_user_registration GET /users/sign_up(.:format) devise/registrations#new
edit_user_registration GET /users/edit(.:format) devise/registrations#edit
PATCH /users(.:format) devise/registrations#update
PUT /users(.:format) devise/registrations#update
DELETE /users(.:format) devise/registrations#destroy
homes GET /homes(.:format) homes#index
POST /homes(.:format) homes#create
new_home GET /homes/new(.:format) homes#new
edit_home GET /homes/:id/edit(.:format) homes#edit
home GET /homes/:id(.:format) homes#show
PATCH /homes/:id(.:format) homes#update
PUT /homes/:id(.:format) homes#update
DELETE /homes/:id(.:format) homes#destroy
project_discussions GET /projects/:project_id/discussions(.:format) discussions#index
POST /projects/:project_id/discussions(.:format) discussions#create
new_project_discussion GET /projects/:project_id/discussions/new(.:format) discussions#new
edit_project_discussion GET /projects/:project_id/discussions/:id/edit(.:format) discussions#edit
project_discussion GET /projects/:project_id/discussions/:id(.:format) discussions#show
PATCH /projects/:project_id/discussions/:id(.:format) discussions#update
PUT /projects/:project_id/discussions/:id(.:format) discussions#update
DELETE /projects/:project_id/discussions/:id(.:format) discussions#destroy
projects GET /projects(.:format) projects#index
POST /projects(.:format) projects#create
new_project GET /projects/new(.:format) projects#new
edit_project GET /projects/:id/edit(.:format) projects#edit
project GET /projects/:id(.:format) projects#show
PATCH /projects/:id(.:format) projects#update
PUT /projects/:id(.:format) projects#update
DELETE /projects/:id(.:format) projects#destroy
discussion_comments GET /discussions/:discussion_id/comments(.:format) comments#index
POST /discussions/:discussion_id/comments(.:format) comments#create
new_discussion_comment GET /discussions/:discussion_id/comments/new(.:format) comments#new
edit_discussion_comment GET /discussions/:discussion_id/comments/:id/edit(.:format) comments#edit
discussion_comment GET /discussions/:discussion_id/comments/:id(.:format) comments#show
PATCH /discussions/:discussion_id/comments/:id(.:format) comments#update
PUT /discussions/:discussion_id/comments/:id(.:format) comments#update
DELETE /discussions/:discussion_id/comments/:id(.:format) comments#destroy
discussions GET /discussions(.:format) discussions#index
POST /discussions(.:format) discussions#create
new_discussion GET /discussions/new(.:format) discussions#new
edit_discussion GET /discussions/:id/edit(.:format) discussions#edit
discussion GET /discussions/:id(.:format) discussions#show
PATCH /discussions/:id(.:format) discussions#update
PUT /discussions/:id(.:format) discussions#update
DELETE /discussions/:id(.:format) discussions#destroy
root GET / homes#index
我不确定是否需要任何我的projects_controller.rb信息，但如果需要，我会更新。
答案 0 :(得分：1)
edit_project_discussion_path需要Project和Discussion。
/projects/:project_id/discussions/:id/edit(.:format)
您只是将讨论item作为project参数发送。
<%= link_to "Edit", edit_project_discussion_path(item) %>
您需要更改它以包含项目：
<%= link_to "Edit", edit_project_discussion_path(@project, item) %>