-
Install the plugin with
script/plugin install http://github.com/fnando/mail_queue.git
-
Generate a migration with
script/generate migration create_mails
and add the following code:class CreateMails < ActiveRecord::Migration def self.up create_table :mails do |t| t.string :subject, :from, :to, :cc, :bcc, :charset, :content_type t.text :body, :data t.boolean :locked, :default => false, :null => false t.integer :priority, :default => 3, :null => false t.integer :tries, :default => 0, :null => false t.integer :maximum_tries, :default => 3, :null => false t.timestamps end
add_index :mails, :locked add_index :mails, :priority add_index :mails, :tries
end
def self.down drop_table :mails end end
-
Run the migrations with
rake db:migrate
- Create your mailer using
script/generate mailer <name>
- To queue a message, call
Mail.queue(<tmail>)
or<Mailer>.queue(<method>, <*args>)
- To deliver the messages, call
Mail.process(:limit => <limit>)
Generate a mailer called UserNotifier with script/generate mailer UserNotifier. Here's what it looks like:
class UserNotifier < ActionMailer::Base
def activation(user)
subject "Confirm your subscription"
recipients user.email
from "mail@cool-app.com"
body :user => user
# you can also specify BCC and CC recipients.
# check it out the Troubleshooting section if
# you're getting errors like
# ActiveRecord::UnknownAttributeError: unknown attribute: cc
cc "cc-recipient@cool-app.com"
bcc "bcc-recipient@cool-app.com"
end
end
# you can queue a TMail
Mail.queue(UserNotifier.create_activation(@user))
# or just call the method queue
UserNotifier.queue(:activation, @user)
# the last argument can be a hash with the following options
UserNotifier.queue(:activation, @user, :priority => 0, :tries => 5)
# save additional data; any additional data will be saved as .to_yaml
UserNotifier.queue(:activation, @user, :data => @user)
# Mail.process accepts two options
Mail.process(:limit => 300)
NOTE: Don't know if will work with multipart mails.
You can run this Mail.process method on a background job. I use simple-daemon gem. I have something like this:
require File.join(File.dirname(__FILE__), "..", "..", "config", "environment")
require "simple-daemon"
class MailDaemon < SimpleDaemon::Base
SimpleDaemon::WORKING_DIRECTORY = "#{RAILS_ROOT}/tmp"
def self.start
loop do
Mail.process
sleep(30)
end
end
def self.stop
end
end
MailDaemon.daemonize
If you're receiving ActiveRecord::UnknownAttributeError: unknown attribute: cc
error, create a new migration with script/generate migration add_cc_and_bcc_fields
and add the following code:
class AddCcAndBccFields < ActiveRecord::Migration
def self.up
add_column :mails, :cc, :string
add_column :mails, :bcc, :string
end
def self.down
remove_column :mails, :cc
remove_column :mails, :bcc
end
end
Run rake db:migrate
and be happy!
- Nando Vieira (http://simplesideias.com.br)
- Akshay Rawat (http://github.com/akshayrawat)
- Julio Monteiro (http://github.com/jmonteiro)
(The MIT License)
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Copyright (c) 2007-2009 Nando Vieira, released under the MIT license