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Diffstat (limited to 'actionmailer/lib/action_mailer/preview.rb')
-rw-r--r-- | actionmailer/lib/action_mailer/preview.rb | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/actionmailer/lib/action_mailer/preview.rb b/actionmailer/lib/action_mailer/preview.rb new file mode 100644 index 0000000000..43d9ec4bb5 --- /dev/null +++ b/actionmailer/lib/action_mailer/preview.rb @@ -0,0 +1,67 @@ +require 'active_support/descendants_tracker' + +module ActionMailer + module Previews #:nodoc: + extend ActiveSupport::Concern + + included do + # Set the location of mailer previews through app configuration: + # + # config.action_mailer.preview_path = "#{Rails.root}/lib/mailer_previews" + # + class_attribute :preview_path, instance_writer: false + end + end + + class Preview + extend ActiveSupport::DescendantsTracker + + class << self + # Returns all mailer preview classes + def all + load_previews if descendants.empty? + descendants + end + + # Returns the mail object for the given email name + def call(email) + preview = self.new + preview.public_send(email) + end + + # Returns all of the available email previews + def emails + public_instance_methods(false).map(&:to_s).sort + end + + # Returns true if the email exists + def email_exists?(email) + emails.include?(email) + end + + # Returns true if the preview exists + def exists?(preview) + all.any?{ |p| p.preview_name == preview } + end + + # Find a mailer preview by its underscored class name + def find(preview) + all.find{ |p| p.preview_name == preview } + end + + # Returns the underscored name of the mailer preview without the suffix + def preview_name + name.sub(/Preview$/, '').underscore + end + + protected + def load_previews #:nodoc: + Dir["#{preview_path}/**/*_preview.rb"].each{ |file| require_dependency file } + end + + def preview_path #:nodoc: + Base.preview_path + end + end + end +end |