Railsのヘルパーは、（）URLパラメータエラーを取得

に無視します：ActionController::RoutingError (No route matches [POST] "/articles/new"):Railsのヘルパーは、（）URLパラメータエラーを取得

/articles/newページからPOSTを行います。

/app/views/articles/new.html.erb内部マイERBコード：

<%= form_for :article, url: articles_path do |f| %> 
    <p> 
    <%= f.label :title %><br> 
    <%= f.text_field :title %> 
    </p> 

    <p> 
    <%= f.label :text %><br> 
    <%= f.text_area :text %> 
    </p> 

<p> 
    <%= f.submit %> 
</p>

/bin/rake routes出力：でresources with form_forを使用する方法について

<%= form_for Article.new do |f| %>

読む：

Running via Spring preloader in process 1067 
     Prefix Verb URI Pattern     Controller#Action 
welcome_index GET /welcome/index(.:format)  welcome#index 
     root GET /       welcome#index 
    articles GET /articles(.:format)   articles#index 
       POST /articles(.:format)   articles#create 
    new_article GET /articles/new(.:format)  articles#new 
edit_article GET /articles/:id/edit(.:format) articles#edit 
     article GET /articles/:id(.:format)  articles#show 
       PATCH /articles/:id(.:format)  articles#update 
       PUT /articles/:id(.:format)  articles#update 
       DELETE /articles/:id(.:format)  articles#destroy

出典

2016-06-11 Mindaugas Bernatavičius