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Mail::Notify

Rails / ActionMailer support for the GOV.UK Notify API.

Installation

Add this line to your application's Gemfile:

gem 'mail-notify'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mail-notify

Then, add the following to your config/environments/*.rb (where * is test, development, production or whatever other environment(s) you have) file(s):

config.action_mailer.delivery_method = :notify
config.action_mailer.notify_settings = {
  api_key: YOUR_NOTIFY_API_KEY
}

Mailers

There are two options for using Mail::Notify, either templating in Rails with a view, or templating in Notify. Whichever way you choose, you'll need your mailers to inherit from Mail::Notify::Mailer like so:

class MyMailer < Mail::Notify::Mailer
end

With a view

Out of the box, Notify offers support for templating, with some rudimentary logic included. If you'd rather have your templating logic included with your source code for ease of access, or you want to do some more complex logic that's not supported by Notify, you can template your mailer views in erb.

For this to work with Notify, you'll need a very simple template set up in Notify, with a ((subject)) variable in the subject line, and a ((body)) variable in the body field, as below:

Example screenshot

Next, in your mailer you'll need to call view_mail with the first parameter being the ID of the notify template, followed by a hash of email headers e.g:

class MyMailer < Mail::Notify::Mailer
    def send_email
        notify_mail('YOUR_TEMPLATE_ID_GOES_HERE',
          to: 'mail@somewhere.com',
          subject: 'Subject line goes here'
        )
    end
end

Your view can then be a simple text.erb file. You can add some markdown for headers, bullet points and links etc. These are handled in the same way as standard action_mailer views.

With Notify templating

You can also send your customisations in the more traditional way, and do your templating in Notify if you prefer. For this, you'll need to call template_mail, again with the first parameter being the ID of the template, and a hash of email headers, including your personalisations, e.g:

class MyMailer < Mail::Notify::Mailer
    def send_email
        template_mail('YOUR_TEMPLATE_ID_GOES_HERE',
          to: 'mail@somewhere.com',
          personalisations: {
              foo: 'bar'
          }
        )
    end
end

Previews

If you're using ActionMailer with Rails, previews are supported too, and work in the same way as standard previews. Currently they're shown without any branding, but this may change in future.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/pezholio/mail-notify. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the Mail::Notify project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.

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