ruby on rails - NoMethodError in Articles#new undefined method `model_name' for #<Article:0x000000035a3450> -

i having problem while creating articles ui.

my task make new page "create article" shown on page , text fields title , description , submit button when press submit button article typed in should saved , when go page articles saved should there.

error log:

this cloud 9 code

routes.rb:

rails.application.routes.draw # priority based upon order of creation: first created -> highest priority. # see how routes lay out "rake routes".  # can have root of site routed "root" # root 'welcome#index' resources :articles  root 'pages#home' 'about', to: 'pages#about' 

articles controller (articles_controller.rb):

class articlescontroller < applicationcontroller   def new     @article = article.new    end end  

new.html.erb in articles folder in views:

<h1>create article</h1> <%= form_for @article |f| %> <% end %> 

article model (article.rb) :

class article   end 

is article model subclass of activerecord::base (applicationrecord rails 5.x)?

class article < activerecord::base  end