Keep form fields filled after an error (RoR)

Question

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

Thanks.

Answer 1

In your view code for the 'new' action use FormHelper tags that reference the same model as your create action eg.

<%= text_field :user, :login %>

Then in your create action, use a model instance with the same name:

@user = User.new
# detect error, redirect to 'new'

The FormHelper will use the value of this instance if it is available.

Answer 2

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