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= Action Mailer -- Easy email delivery and testing
Action Mailer is framework for designing email-service layers. These layers
are used to consolidate code for sending out forgotten passwords, welcoming
wishes on signup, invoices for billing, and any other use case that requires
a written notification to either a person or another system.
The framework works by setting up all the email details, except the body,
in methods on the service layer. Subject, recipients, sender, and timestamp
are all set up this way. An example of such a method:
def signed_up(recipient)
@recipients = recipient
@subject = "[Signed up] Welcome #{recipient}"
@from = "system@loudthinking.com"
@sent_on = Time.local(2004, 12, 12)
@body["recipient"] = recipient
end
The body of the email is created by using an Action View template (regular
ERb) that has the content of the @body hash available as instance variables.
So the corresponding body template for the method above could look like this:
Hello there,
Mr. <%= @recipient %>
And if the recipient was given as "david@loudthinking.com", the email
generated would look like this:
Date: Sun, 12 Dec 2004 00:00:00 +0100
From: system@loudthinking.com
To: david@loudthinking.com
Subject: [Signed up] Welcome david@loudthinking.com
Hello there,
Mr. david@loudthinking.com
You never actually call the instance methods like signed_up directly. Instead,
you call class methods like deliver_* and create_* that are automatically
created for each instance method. So if the signed_up method sat on
ApplicationMailer, it would look like this:
ApplicationMailer.create_signed_up("david@loudthinking.com") # => tmail object for testing
ApplicationMailer.deliver_signed_up("david@loudthinking.com") # sends the email
ApplicationMailer.new.signed_up("david@loudthinking.com") # won't work!
== Dependencies
Action Mailer requires that the Action Pack is either available to be required immediately
or is accessible as a GEM.
== Bundled software
* tmail 0.10.8 by Minero Aoki released under LGPL
Read more on http://i.loveruby.net/en/prog/tmail.html
* Text::Format 0.63 by Austin Ziegler released under OpenSource
Read more on http://www.halostatue.ca/ruby/Text__Format.html
== Download
The latest version of Action Mailer can be found at
* http://rubyforge.org/project/showfiles.php?group_id=361
Documentation can be found at
* http://actionmailer.rubyonrails.org
== Installation
You can install Action Mailer with the following command.
% [sudo] ruby install.rb
from its distribution directory.
== License
Action Mailer is released under the MIT license.
== Support
The Action Mailer homepage is http://actionmailer.rubyonrails.org. You can find
the Action Mailer RubyForge page at http://rubyforge.org/projects/actionmailer.
And as Jim from Rake says:
Feel free to submit commits or feature requests. If you send a patch,
remember to update the corresponding unit tests. If fact, I prefer
new feature to be submitted in the form of new unit tests.
For other information, feel free to ask on the ruby-talk mailing list (which
is mirrored to comp.lang.ruby) or contact mailto:david@loudthinking.com.
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