Devise how to pass current_user to confirm_instructions mailer

Question

I have Devise set up and woking great. I am using confirmable and have modified this as per their 2 step registration process guide:

set password at confirmation

I have one last requirement that I am having trouble with.

What we have is a 2 scenarios

1) a user can register as new

2) A logged in user (current_user) can create a new user. When a logged in user creates a new user I want to be able to add their email into the confirmation email sent to the new created user

In the email to the new registered user I need to pass in the current_user.email somehow if the user was created by a user one logged in. I will then do a simple if check and add some extra text to the email.

the confirmation_instructions.html.erb currently:

<p>Welcome <%= @resource.email %>!</p>

<p>You can confirm your account email through the link below:</p>

<p><%= link_to 'Confirm account', confirmation_url(@resource, :confirmation_token => @resource.confirmation_token) %></p>

What I need is something like

<p>Welcome <%= @resource.email %>!</p>

<% if [email protected]? %>
   <p> some additional welcome text here from <%= @user.email %> </p>
<% end %>

<p>You can confirm your account email through the link below:</p>

<p><%= link_to 'Confirm account', confirmation_url(@resource, :confirmation_token => @resource.confirmation_token) %></p>

I have been going back and forth with custom mailer with no joy. Can someone help me out, I am sure there is something simple I am missing here.

For info (I know this is not the best method but we are throwing together a very quick app for demo purposes) a user creates a new contact by typing in am email address. If the email address does not exist in the user table a new user is created then the contact relationship created (snippet of the controller):

class DashboardController < ApplicationController
     before_filter :authenticate_user!

  def show
    @contacts = current_user.contacts
  end

  def createcontact
    user2 = User.find_by_email(params[:contact_email])
    if user2.nil?
            newContact = User.create(:email => params[:contact_email])
            if newContact.save
                 current_user.newUserContact(newContact)
                 redirect_to dashboard_path, :notice => "conact has been saved as well as a new contact"
            else
                redirect_to dashboard_path, :notice => "ERROR saving contact"
            end
    else
      .
      .
      .
      .

Answer 1

Follow this tutorial for setting up a custom mailer.

In config/initializers/devise.rb:

config.mailer = "UserMailer".

Create a new mailer that inherits from Devise's mailer in the folder app/mailers:

# user_mailer.rb
class UserMailer < Devise::Mailer

  def invite(sender, recipient)
    @sender = sender
    @recipient = recipient

    mail( :to => recipient.email,
          :subject => "Invite by #{sender.name}"
        )
  end
end

Now, move your devise mailer views to the folder app/views/user_mailer. There create a new email view where you can use the variables @sender and @recipient.

# invite.html.erb
<p>Welcome <%= @recipient.email %>!</p>

<% if @sender.email? %>
  <p> some additional welcome text here from <%= @sender.email %> </p>
<% end %>

Now, in your controller, you can call the following:

UserMailer.invite(current_user, newContact).deliver