Question

how to display error onto another page?

I have a form under user folder

And in another place, my_account folder, i render the form from user folder inside the index page of my_account. so that i can reuse the form,to allow user to update their user information.

So when user click update, update method in UserController will be invoked.

My question is, if faild to update user object, how can i display error message on to my_account index page, and still have the field highlight, and error message??
e.g invalid format of email address

User
    -- new.html.erb
    -- _form

my_account
    -- index.html.erb

I tried to do following, but not sure how can i print the “error” in my_account page:

// try to update user information

// if failed, redirect to my account page
  format.html { redirect_to my_account_path, :error => @user.errors }

Answer 1

You need the errors to be set on the user object. This is used by form helper to display error messages when calling <%= f.error_messages %> inside your <% form_for %> block.

The Rails best-practice is to call render here, not redirect, so that we ensure we pass the @user object that has errors properly assigned.

To render the action, you can simply call:

 if !@user.save
   render :action => '../my_account/index'
 end

This should easily solve your problem; just make sure to have all of your @member-variables set that the index.html.erb view expects.