How to change email address with Devise on rails3.1 - ruby-on-rails

Question

I'd like to have an "edit profile" page, in which the user can change the email address registered when signing up.
I'd like to have the following process:
the user has to input his password to confirm before he makes changes in the email field.
after submitting that page, the user should receive a verification mail just like Devise's default sign up.
the email change is completed as soon as the user clicks the verification token URL on the mail.
How would I do this?

Answer 1

I created this same flow for a site of mine. Here's an example of what you can do:
add to config/routes.rb
(note that the routing could be better, but I did this a while ago)
scope :path => '/users', :controller => 'users' do
match 'verify_email' => :verify_email, :as => 'verify_email'
match 'edit_account_email' => :edit_account_email, :as => 'edit_account_email'
match 'update_account_email' => :update_account_email, :as => 'update_account_email'
end
add to app/controllers/users_controller.rb
def edit_account_email
#user=current_user
end
def update_account_email
#user=current_user
#user.password_not_needed=true
#user.email=params[:address]
if #user.save
flash[:notice]="your login email has been successfully updated."
else
flash[:alert]="oops! we were unable to activate your new login email. #{#user.errors}"
end
redirect_to edit_user_path
end
def verify_email
#user=current_user
#address=params[:address]
UserMailer.confirm_account_email(#user, #address).deliver
end
app/mailers/user_mailer.rb
class UserMailer < ActionMailer::Base
def confirm_account_email(user, address)
#user = user
#address = address
mail(
:to=>"#{user.name} <#{#address}>",
:from=>"your name <'your_email#domain.com'>",
:subject=>"account email confirmation for #{user.name}"
)
end
end
app/views/user_mailer/confirm_account_email.html.erb
<p>you can confirm that you'd like to use this email address to log in to your account by clicking the link below:</p>
<p><%= link_to('update your email', update_account_email_url(#user, :address=>#address)) %></p>
<p>if you choose not to confirm the new address, your current login email will remain active.