如何使用 gem devise&mailgun 发送电子邮件确认

Question

I am having troubles with sending email confirmation using devise and mailgun. I have installed devise and changed setting to send email but whenever I signup as a newcomer there is no confirmation email sent. Can anyone specifically explain how to do it? Thanks.

config/environments/developments.rb

Answer 1

Try this ...........

In your Gemfile

gem 'mailgun_rails'

To configure your Mailgun credentials place the following code in the corresponding environment file (development.rb, production.rb...)

config.action_mailer.delivery_method = :mailgun
config.action_mailer.mailgun_settings = {
        api_key: '<mailgun api key>',
        domain: '<mailgun domain>'
}

Hope this will work for you.

Answer 2

Just recently had this problem, and figured it out. First you wanna setup your config/environments/production.rb file like so:

config.action_mailer.delivery_method = :mailgun
config.action_mailer.mailgun_settings = {
 api_key: ENV["MAILGUN_API_KEY"], #this should stored in an ENV variable
 domain: "mail.your_domain.com" #the "mail" can be left out or replaced with whichever subdomain you've configured for outgoing email. I use "mail", others use "mg".
}

Your config/initializers/devise.rb should have a line like

config.mailer = "MyMailer" 

Now you will need override the Devise method called send_on_create_confirmation_instructions . You should put this code in your User model.

class User < ApplicationRecord
 def send_on_create_confirmation_instructions
  MyMailer.confirmation_instructions(user, token).deliver #If you're not using Sidekiq or anything else, you should just call the MyMailer class directly.
 end
end

Then you would edit that confirmation_instructions() method in MyMailer like so:

class MyMailer < Devise::Mailer
 require 'mailgun-ruby' #this needs to be required
 include Devise::Controllers::UrlHelpers
 default template_path: 'users/mailer'

 def confirmation_instructions(record, token, opts={})
  mg_client = Mailgun::Client.new ENV['MAILGUN_API_KEY']
  message_params = {
   from: "whatever_email@your_domain.com",
   to: record.email,
   subject: "Please confirm your account",
   html: super
  }

  mg_client.send_message "mail.your_domain.com", message_params #don't forget the "mail." for the sending domain
 end
end

Devise docs say to add super to the end of the confirmation_instructions() method, but since message_params needs an html or text field for this to send, you would do it like html: super . Whatever template is at users/mailer/confirmation_instructions should then send to the email stored in record