ruby on rails - ActiveRecord::RecordNotFound in ArticlesController#show Couldn't find Article with 'id'=edit -

i getting error when got articles/edit.

i getting error:

when should getting error:

my code:

articles_controller:

class articlescontroller < applicationcontroller    def new     @article = article.new    end    def edit     @article = article.find(params[:id])   end     def create     @article = article.new(article_params)     if @article.save       flash[:notice] = "article submitted succsefully"       redirect_to (@article)     else       render :new     end    end    def show     @article = article.find(params[:id])   end     private    def article_params      params.require(:article).permit(:title, :description)   end end  

my edit.html.erb :

<h1>edit existing article</h1> <% if @article.errors.any? %> <h2>the following errors informing if don't these  articles not edited</h2>   <ul>     <% @article.errors.full_messages.each |msg| %>       <li> <%= msg %> </li>     <% end %>   </ul> <% end %> <%= form_for @article |f| %>   <p>     <%= f.label :title %>     <%= f.text_field:title %>   </p>   <p>     <%= f.label :description  %>     <%= f.text_area :description %>   </p>   <p>     <%= f.submit %>   </p> <% end %> 

my new.html.erb :

<h1>create article</h1> <% if @article.errors.any? %> <h2>the following errors informing if don't these  articles not created</h2>   <ul>     <% @article.errors.full_messages.each |msg| %>       <li> <%= msg %> </li>     <% end %>   </ul> <% end %> <%= form_for @article |f| %>   <p>     <%= f.label :title %>     <%= f.text_field:title %>   </p>   <p>     <%= f.label :description  %>     <%= f.text_area :description %>   </p>   <p>     <%= f.submit %>   </p> <% end %> 

my routes.rb:

resources :articles root 'pages#home' 'about', to: 'pages#about' 

ask me more files if helps

then that's cause of error. 'edit' page requires id param otherwise. in controller:

def edit   @article = article.find(params[:id]) end  

it needs params[:id]

so need use /articles/id/edit (replace id actual id)