rails： ActionController：：routeingError (没有路由匹配 [PATCH] "/article/viewing-article-2" )：

Question

我目前正在学习铁轨并面临一个完全奇怪的问题。我正在尝试通过遵循我正在做的教程来更新现有文章，但是它没有更新。我分别从终端和浏览器中收到以下错误：

- Terminal: 
* Started PATCH "/article/viewing-article-2" for 127.0.0.1 at 2018-03-28 18:54:46 +0200
* No route matches [PATCH] "/article/viewing-article-2"
- Browser: ActionController::RoutingError (No route matches [PATCH] "/article/viewing-article-2"):

我的路线是

**routes.erb**
Rails.application.routes.draw do
  root to: 'pages#index'
  post 'article/create-new-article', to: 'pages#create'
  get 'article/viewing-article-:id', to: 'pages#show', as: 'article'
  get 'article/:id/edit', to: 'pages#edit', as: 'article_edit'
  patch 'article/:id/update', to: 'pages#update', as: 'update_article'
  get 'article/new-article', to: 'pages#new'
  get 'article/destroy', to: 'pages#destroy'
end

和我的控制器：

controller.erb
def index
    @articles = @@all_articles.all
  end
  def show
    @article = Article.find(params[:id])
  end
  def edit
    @article = Article.find(params[:id])
  end
  def update
    @article = Article.find(params[:id])
    article_params = params.require(:article).permit(:title, :author, :publisher, :content)
    @article.update(article_params)
    redirect_to root_path
  end

和我的html：

edit.html.erb
<% content_for :title do %>Editing <%= @article.title %><% end %>
<% content_for :bodycontent do %>
 <h3>Editing <%= @article.title %></h3> 
  <%= form_for @article do |f| %>
     <%= f.text_field :title,  class: 'form-control'%>
     <%= f.text_field :author,  class: 'form-control'%>
     <%= f.text_field :publisher,  class: 'form-control'%>
     <%= f.text_area :content,  class: 'form-control'%> 
     <%= f.submit class: 'form-control btn btn-primary' %>
  <% end %>
<% end %>

我肯定不是我在做错什么，因为所选文章没有更新。

到目前为止，我一直很喜欢铁轨，并希望能变得更好。将感谢任何帮助。

Answer 1

用自定义URL

修改form_for

<%= form_for @article, url: @article.new_record? ? article_create_new_article_path : update_article(@post)do |f| %>

，但我建议您改用足智多谋的路由。

Answer 2

首先，您确实应该为您的文章模型使用资源路由：

Rails.application.routes.draw do
  root 'pages#index'
  resources :articles
end

这就是控制器的外观。关于允许参数在此处阅读。

def index
  @articles = Article.all
end
def show
  @article = Article.find(params[:id])
end
def edit
  @article = Article.find(params[:id])
end
def update
  return unless request.patch?
  @article = Article.find(params[:id])
  if @article.update(article_params)
    redirect_to root_path
  else
    render :edit
  end
end
private
def article_params
  params.require(:article).permit(:title, :author, :publisher, :content)
end