/YYYY/MM/Title-Slug URL 结构 Friendly_Id Solution Chokes on #edit
/YYYY/MM/Title-Slug URL structure with Friendly_Id Solution Chokes on #edit
根据我在 in resolving my 中获得的指导，我希望得到一些帮助来解决我在尝试编辑 post:
时收到的错误
No route matches [PATCH] "/blog/2015/09/example-post/blog/2015/09/example-post"
这里是所有有问题的文件（使用同一个非常简单的脚手架博客）：
$ rails new blog
[...]
$ cd blog
# (Add friendly_id to Gemfile & install)
$ rails generate friendly_id
$ rails generate scaffold post title content slug:string:uniq
[...]
$ rake db:migrate
routes.rb
Rails.application.routes.draw do
scope 'blog' do
get '', to: 'posts#index', as: 'posts'
post '', to: 'posts#create'
get '/new', to: 'posts#new', as: 'new_post'
get '/:year/:month/:id/edit', to: 'posts#edit', as: 'edit_post'
get '/:year/:month/:id', to: 'posts#show', as: 'post'
patch '/:id', to: 'posts#update'
put '/:id', to: 'posts#update'
delete '/:year/:month/:id', to: 'posts#destroy'
end
end
post.rb
class Post < ActiveRecord::Base
extend FriendlyId
friendly_id :title, use: :slugged
def year
created_at.localtime.strftime("%Y")
end
def month
created_at.localtime.strftime("%m")
end
end
posts_controller.rb
class PostsController < ApplicationController
before_action :set_post, only: [:show, :edit, :update, :destroy]
def index
@posts = Post.all
end
def show
@post = Post.friendly.find(params[:id])
end
def new
@post = Post.new
end
def edit
@post = Post.friendly.find(params[:id])
end
def create
@post = Post.new(post_params)
respond_to do |format|
if @post.save
format.html { redirect_to post_path(@post.year, @post.month, @post), notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: @post }
else
format.html { render :new }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
def update
respond_to do |format|
if @post.update(post_params)
format.html { redirect_to post_path, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: @post }
else
format.html { render :edit }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
def destroy
@post.destroy
respond_to do |format|
format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_post
@post = Post.friendly.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def post_params
params.require(:post).permit(:title, :content, :slug)
end
end
end
posts_helper.rb
module PostsHelper
def post_path(post)
"blog/#{post.year}/#{post.month}/#{post.slug}"
end
def edit_post_path(post)
"#{post.year}/#{post.month}/#{post.slug}/edit"
end
end
app/views/posts/index.html.erb
<p id="notice"><%= notice %></p>
<h1>Listing Posts</h1>
<table>
<thead>
<tr>
<th>Title</th>
<th>Content</th>
<th>Slug</th>
<th colspan="3"></th>
</tr>
</thead>
<tbody>
<% @posts.each do |post| %>
<tr>
<td><%= post.title %></td>
<td><%= post.content %></td>
<td><%= post.slug %></td>
<td><%= link_to 'Show', post_path(post) %></td>
<td><%= link_to 'Edit', edit_post_path(post) %></td>
<td><%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</tbody>
</table>
<br>
<%= link_to 'New Post', new_post_path %>
总而言之，以下是有效的方法：
- /blog/index
- /blog/2015/09/example-post
- 创建一个新的 post
- 摧毁一个post
…什么不起作用：
- 编辑 post（带有表单的编辑页面将呈现，但在提交更改后您将收到上述错误 - 并且更改永远不会进入数据库）
我认识到这个重复问题可能与此 edit_post_path 覆盖有关，但以下强制正确 PATCH 路由的尝试无效：
- 将 PATCH 路由更新为
patch '/:year/:month/:id', to: 'posts#update'
将更新的 PATCH 路由命名为 as: 'patch' 并将 PATCH 路径覆盖添加到 posts_helper:
def patch_path(post)
"#{post.year}/#{post.month}/#{post.slug}"
end
将覆盖更改为：
def patch_path(post)
""
end
- 取消命名并将 PATCH 路由更改为
patch '', to: 'posts#update'
查看 posts_controller，问题似乎不存在，因为重定向不是问题所在 - 我不明白为什么 @post.update(post_params) 会出现问题：
def update
respond_to do |format|
if @post.update(post_params)
format.html { redirect_to @post, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: @post }
else
format.html { render :edit }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
据我所知，URL 中的重复发生在 PATCH 操作之前，这将我们带回了 EDIT 流程 - 它必须将重复传递给 PATCH，然后结束窒息。想法？提前致谢！
编辑
编辑。html.erb
<h1>Editing Post</h1>
<%= render 'form' %>
<%= link_to 'Show', @post %> |
<%= link_to 'Back', posts_path %>
_form.html.erb
<%= form_for(@post) do |f| %>
<% if @post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% @post.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :title %><br>
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.label :content %><br>
<%= f.text_field :content %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
看来主要问题出在助手身上。返回的路径需要以斜杠开头：
module PostsHelper
def post_path(post)
"/blog/#{post.year}/#{post.month}/#{post.slug}"
end
def edit_post_path(post)
"/blog/#{post.year}/#{post.month}/#{post.slug}/edit"
end
end
如果没有开头的斜杠，浏览器会将它们视为相对路径，将它们附加到当前路径（这就是为什么您在提交编辑表单时以 /blog/2015/09/example-post/blog/2015/09/example-post 结束）。
您还需要确保您的 patch 和 put 路线一致：
get '/:year/:month/:id', to: 'posts#show', as: 'post'
patch '/:year/:month/:id', to: 'posts#update'
put '/:year/:month/:id', to: 'posts#update'
delete '/:year/:month/:id', to: 'posts#destroy'
最后，控制器需要包含 PostsHelper 并将其方法用于 create 和 update 中的重定向 URL：
class PostsController < ApplicationController
include PostsHelper
...
def create
@post = Post.new(post_params)
respond_to do |format|
if @post.save
format.html { redirect_to post_path(@post), notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: @post }
else
format.html { render :new }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
def update
respond_to do |format|
if @post.update(post_params)
format.html { redirect_to post_path(@post), notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: @post }
else
format.html { render :edit }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
...
end
根据我在
No route matches [PATCH] "/blog/2015/09/example-post/blog/2015/09/example-post"
这里是所有有问题的文件（使用同一个非常简单的脚手架博客）：
$ rails new blog
[...]
$ cd blog
# (Add friendly_id to Gemfile & install)
$ rails generate friendly_id
$ rails generate scaffold post title content slug:string:uniq
[...]
$ rake db:migrate
routes.rb
Rails.application.routes.draw do
scope 'blog' do
get '', to: 'posts#index', as: 'posts'
post '', to: 'posts#create'
get '/new', to: 'posts#new', as: 'new_post'
get '/:year/:month/:id/edit', to: 'posts#edit', as: 'edit_post'
get '/:year/:month/:id', to: 'posts#show', as: 'post'
patch '/:id', to: 'posts#update'
put '/:id', to: 'posts#update'
delete '/:year/:month/:id', to: 'posts#destroy'
end
end
post.rb
class Post < ActiveRecord::Base
extend FriendlyId
friendly_id :title, use: :slugged
def year
created_at.localtime.strftime("%Y")
end
def month
created_at.localtime.strftime("%m")
end
end
posts_controller.rb
class PostsController < ApplicationController
before_action :set_post, only: [:show, :edit, :update, :destroy]
def index
@posts = Post.all
end
def show
@post = Post.friendly.find(params[:id])
end
def new
@post = Post.new
end
def edit
@post = Post.friendly.find(params[:id])
end
def create
@post = Post.new(post_params)
respond_to do |format|
if @post.save
format.html { redirect_to post_path(@post.year, @post.month, @post), notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: @post }
else
format.html { render :new }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
def update
respond_to do |format|
if @post.update(post_params)
format.html { redirect_to post_path, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: @post }
else
format.html { render :edit }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
def destroy
@post.destroy
respond_to do |format|
format.html { redirect_to posts_url, notice: 'Post was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_post
@post = Post.friendly.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def post_params
params.require(:post).permit(:title, :content, :slug)
end
end
end
posts_helper.rb
module PostsHelper
def post_path(post)
"blog/#{post.year}/#{post.month}/#{post.slug}"
end
def edit_post_path(post)
"#{post.year}/#{post.month}/#{post.slug}/edit"
end
end
app/views/posts/index.html.erb
<p id="notice"><%= notice %></p>
<h1>Listing Posts</h1>
<table>
<thead>
<tr>
<th>Title</th>
<th>Content</th>
<th>Slug</th>
<th colspan="3"></th>
</tr>
</thead>
<tbody>
<% @posts.each do |post| %>
<tr>
<td><%= post.title %></td>
<td><%= post.content %></td>
<td><%= post.slug %></td>
<td><%= link_to 'Show', post_path(post) %></td>
<td><%= link_to 'Edit', edit_post_path(post) %></td>
<td><%= link_to 'Destroy', post, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
</tbody>
</table>
<br>
<%= link_to 'New Post', new_post_path %>
总而言之，以下是有效的方法：
- /blog/index
- /blog/2015/09/example-post
- 创建一个新的 post
- 摧毁一个post
…什么不起作用：
- 编辑 post（带有表单的编辑页面将呈现，但在提交更改后您将收到上述错误 - 并且更改永远不会进入数据库）
我认识到这个重复问题可能与此 edit_post_path 覆盖有关，但以下强制正确 PATCH 路由的尝试无效：
- 将 PATCH 路由更新为
patch '/:year/:month/:id', to: 'posts#update' 将更新的 PATCH 路由命名为
as: 'patch'并将 PATCH 路径覆盖添加到 posts_helper:def patch_path(post) "#{post.year}/#{post.month}/#{post.slug}" end将覆盖更改为：
def patch_path(post) "" end- 取消命名并将 PATCH 路由更改为
patch '', to: 'posts#update'
查看 posts_controller，问题似乎不存在，因为重定向不是问题所在 - 我不明白为什么 @post.update(post_params) 会出现问题：
def update
respond_to do |format|
if @post.update(post_params)
format.html { redirect_to @post, notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: @post }
else
format.html { render :edit }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
据我所知，URL 中的重复发生在 PATCH 操作之前，这将我们带回了 EDIT 流程 - 它必须将重复传递给 PATCH，然后结束窒息。想法？提前致谢！
编辑
编辑。html.erb
<h1>Editing Post</h1>
<%= render 'form' %>
<%= link_to 'Show', @post %> |
<%= link_to 'Back', posts_path %>
_form.html.erb
<%= form_for(@post) do |f| %>
<% if @post.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@post.errors.count, "error") %> prohibited this post from being saved:</h2>
<ul>
<% @post.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :title %><br>
<%= f.text_field :title %>
</div>
<div class="field">
<%= f.label :content %><br>
<%= f.text_field :content %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
看来主要问题出在助手身上。返回的路径需要以斜杠开头：
module PostsHelper
def post_path(post)
"/blog/#{post.year}/#{post.month}/#{post.slug}"
end
def edit_post_path(post)
"/blog/#{post.year}/#{post.month}/#{post.slug}/edit"
end
end
如果没有开头的斜杠，浏览器会将它们视为相对路径，将它们附加到当前路径（这就是为什么您在提交编辑表单时以 /blog/2015/09/example-post/blog/2015/09/example-post 结束）。
您还需要确保您的 patch 和 put 路线一致：
get '/:year/:month/:id', to: 'posts#show', as: 'post'
patch '/:year/:month/:id', to: 'posts#update'
put '/:year/:month/:id', to: 'posts#update'
delete '/:year/:month/:id', to: 'posts#destroy'
最后，控制器需要包含 PostsHelper 并将其方法用于 create 和 update 中的重定向 URL：
class PostsController < ApplicationController
include PostsHelper
...
def create
@post = Post.new(post_params)
respond_to do |format|
if @post.save
format.html { redirect_to post_path(@post), notice: 'Post was successfully created.' }
format.json { render :show, status: :created, location: @post }
else
format.html { render :new }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
def update
respond_to do |format|
if @post.update(post_params)
format.html { redirect_to post_path(@post), notice: 'Post was successfully updated.' }
format.json { render :show, status: :ok, location: @post }
else
format.html { render :edit }
format.json { render json: @post.errors, status: :unprocessable_entity }
end
end
end
...
end