module ActionMailer::MailHelper

Provides helper methods for ActionMailer::Base that can be used for easily formatting messages, accessing mailer or message instances, and the attachments list.

Public Instance Methods

attachments() Show source

# File actionmailer/lib/action_mailer/mail_helper.rb, line 43
def attachments
  mailer.attachments
end

Access the message attachments list.

block_format(text) Show source

# File actionmailer/lib/action_mailer/mail_helper.rb, line 20
def block_format(text)
  formatted = text.split(/\n\r?\n/).collect { |paragraph|
    format_paragraph(paragraph)
  }.join("\n\n")

  # Make list points stand on their own line
  formatted.gsub!(/[ ]*([*]+) ([^*]*)/) { "  #{$1} #{$2.strip}\n" }
  formatted.gsub!(/[ ]*([#]+) ([^#]*)/) { "  #{$1} #{$2.strip}\n" }

  formatted
end

Take the text and format it, indented two spaces for each line, and wrapped at 72 columns:

text = <<-TEXT
  This is
  the      paragraph.

  * item1 * item2
TEXT

block_format text
# => "  This is the paragraph.\n\n  * item1\n  * item2\n"

format_paragraph(text, len = 72, indent = 2) Show source

# File actionmailer/lib/action_mailer/mail_helper.rb, line 55
def format_paragraph(text, len = 72, indent = 2)
  sentences = [[]]

  text.split.each do |word|
    if sentences.first.present? && (sentences.last + [word]).join(" ").length > len
      sentences << [word]
    else
      sentences.last << word
    end
  end

  indentation = " " * indent
  sentences.map! { |sentence|
    "#{indentation}#{sentence.join(' ')}"
  }.join "\n"
end

Returns text wrapped at len columns and indented indent spaces. By default column length len equals 72 characters and indent indent equal two spaces.

my_text = 'Here is a sample text with more than 40 characters'

format_paragraph(my_text, 25, 4)
# => "    Here is a sample text with\n    more than 40 characters"

mailer() Show source

# File actionmailer/lib/action_mailer/mail_helper.rb, line 33
def mailer
  @_controller
end

Access the mailer instance.

message() Show source

# File actionmailer/lib/action_mailer/mail_helper.rb, line 38
def message
  @_message
end

Access the message instance.