Rails 4，控制器未接收到参数

Question

I'm trying to setup a post editing page, with links to edit and delete posts. I'm having troubles because my edit controller somehow doesn't seem to receive the parameters I'm sending. I've printed them out on the page to make sure they're there, and it displays correctly, but when I click the editlink I get ActiveRecord::RecordNotFound Couldn't find Article with 'id'= .

here's the view with the link: (article.id display correctly on this one)

<div id= "articles-index">
    <div class = "row">
        <% @article.each do |article| %>
            <div class="row">
                <div class = "container">               
                <p><%= link_to article.title, article %> | <%= article.updated_at.strftime("%e. %b %Y, %H:%M") %> | <%= link_to 'edit', articles_update_path(article.id) %> | delete</p>
                <h2><%= article.id %></h2>
                </div>                          
            </div>
        <% end %>
    </div>
</div>

articles controller:(the ... is where I edited more code out as it's irrelevant to this question)

class ArticlesController < ApplicationController        
    ...
    def update
      @article = Article.find(params[:id])  
    end            
    def manage
      @article = current_user.articles
      @article = current_user.articles.order('id DESC')
    end
    ...    
    def article_params
      params.require(:article).permit(:id, :title, :body, :user_id)
    end
end

routes:

  get 'articles/edit'   
  get 'articles/destroy'    
  get 'articles/manage'    
  get 'articles/show'    
  get 'articles/index'    
  get 'articles/new'    
  get 'articles/update'    
  get 'articles/search'    
  get 'articles/create'    
  get 'sessions/destroy'    
  get 'sessions/new'      
  get 'users/new'

  resources :users
  resources :sessions
  resources :articles

GitHub Link

Answer 1

Clicking on a link instigates a GET request. I'm guessing the update action on your controller will be expecting the params to be a POST request.

The edit action normally handles GET. The update action receives the POST request.

I was trying to find the DHH 2007 Keynote at Railsconf that covers this really well. If you can find it, watch it.

See CRUD Verbs and Actions at Rails Guides

UPDATE: Just seen your routes file. If it's a GET request then just put the URL directly into the browser. eg

articles/update?id=123

See if params[:id] == 123 in the controller. It should be.

UPDATE 2

articles_update_path(id: article.id)

Will generate a params has with an :id key but fundamentally you shouldn't be calling update actions with a GET route.