ruby on rails - Keep form fields filled after an error (RoR)

Question

After validation, I got an error and I got returned back to :action => :new. Some field on form already filled, so I want to keep them filled even after error message too. How it can be done?

Answer 1

Your View (new.html.erb) something like following

<%= error_message_for :user %>
<% form_for :user, :action=>"create" do|f|%>

<%= f.text_field :login %>

<% end %>

Controller Code (create method)

def create
  @user=User.new(params[:user])
  if @user.save
     redirect_to :action=>'index'
  else
     render :action=>'new'  #you should render to fill fields after error message
  end
end