148 lines
4.6 KiB
Text
Executable file
148 lines
4.6 KiB
Text
Executable file
= Action Mailer -- Easy email delivery and testing
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Action Mailer is a framework for designing email-service layers. These layers
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are used to consolidate code for sending out forgotten passwords, welcoming
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wishes on signup, invoices for billing, and any other use case that requires
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a written notification to either a person or another system.
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Additionally, an Action Mailer class can be used to process incoming email,
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such as allowing a weblog to accept new posts from an email (which could even
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have been sent from a phone).
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== Sending emails
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The framework works by setting up all the email details, except the body,
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in methods on the service layer. Subject, recipients, sender, and timestamp
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are all set up this way. An example of such a method:
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def signed_up(recipient)
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recipients recipient
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subject "[Signed up] Welcome #{recipient}"
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from "system@loudthinking.com"
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body(:recipient => recipient)
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end
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The body of the email is created by using an Action View template (regular
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ERb) that has the content of the body hash parameter available as instance variables.
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So the corresponding body template for the method above could look like this:
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Hello there,
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Mr. <%= @recipient %>
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And if the recipient was given as "david@loudthinking.com", the email
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generated would look like this:
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Date: Sun, 12 Dec 2004 00:00:00 +0100
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From: system@loudthinking.com
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To: david@loudthinking.com
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Subject: [Signed up] Welcome david@loudthinking.com
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Hello there,
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Mr. david@loudthinking.com
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You never actually call the instance methods like signed_up directly. Instead,
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you call class methods like deliver_* and create_* that are automatically
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created for each instance method. So if the signed_up method sat on
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ApplicationMailer, it would look like this:
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ApplicationMailer.create_signed_up("david@loudthinking.com") # => tmail object for testing
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ApplicationMailer.deliver_signed_up("david@loudthinking.com") # sends the email
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ApplicationMailer.new.signed_up("david@loudthinking.com") # won't work!
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== Receiving emails
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To receive emails, you need to implement a public instance method called receive that takes a
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tmail object as its single parameter. The Action Mailer framework has a corresponding class method,
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which is also called receive, that accepts a raw, unprocessed email as a string, which it then turns
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into the tmail object and calls the receive instance method.
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Example:
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class Mailman < ActionMailer::Base
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def receive(email)
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page = Page.find_by_address(email.to.first)
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page.emails.create(
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:subject => email.subject, :body => email.body
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)
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if email.has_attachments?
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for attachment in email.attachments
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page.attachments.create({
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:file => attachment, :description => email.subject
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})
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end
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end
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end
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end
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This Mailman can be the target for Postfix. In Rails, you would use the runner like this:
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./script/runner 'Mailman.receive(STDIN.read)'
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== Configuration
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The Base class has the full list of configuration options. Here's an example:
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ActionMailer::Base.server_settings = {
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:address=>'smtp.yourserver.com', # default: localhost
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:port=>'25', # default: 25
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:user_name=>'user',
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:password=>'pass',
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:authentication=>:plain # :plain, :login or :cram_md5
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}
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== Dependencies
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Action Mailer requires that the Action Pack is either available to be required immediately
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or is accessible as a GEM.
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== Bundled software
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* tmail 0.10.8 by Minero Aoki released under LGPL
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Read more on http://i.loveruby.net/en/prog/tmail.html
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* Text::Format 0.63 by Austin Ziegler released under OpenSource
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Read more on http://www.halostatue.ca/ruby/Text__Format.html
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== Download
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The latest version of Action Mailer can be found at
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* http://rubyforge.org/project/showfiles.php?group_id=361
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Documentation can be found at
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* http://actionmailer.rubyonrails.org
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== Installation
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You can install Action Mailer with the following command.
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% [sudo] ruby install.rb
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from its distribution directory.
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== License
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Action Mailer is released under the MIT license.
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== Support
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The Action Mailer homepage is http://actionmailer.rubyonrails.org. You can find
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the Action Mailer RubyForge page at http://rubyforge.org/projects/actionmailer.
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And as Jim from Rake says:
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Feel free to submit commits or feature requests. If you send a patch,
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remember to update the corresponding unit tests. If fact, I prefer
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new feature to be submitted in the form of new unit tests.
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For other information, feel free to ask on the ruby-talk mailing list (which
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is mirrored to comp.lang.ruby) or contact mailto:david@loudthinking.com.
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