class ActionMailer::InlinePreviewInterceptor

Implements a mailer preview interceptor that converts image tag src attributes that use inline cid: style urls to data: style urls so that they are visible when previewing a HTML email in a web browser.

This interceptor is not enabled by default, to use it just register it like any other mailer preview interceptor:

ActionMailer::Base.register_preview_interceptor(ActionMailer::InlinePreviewInterceptor)

Constants

PATTERN

Private Instance Methods

data_url(part) click to toggle source
# File lib/action_mailer/inline_preview_interceptor.rb, line 53
def data_url(part)
  "data:#{part.mime_type};base64,#{strict_encode64(part.body.raw_source)}"
end
find_part(cid) click to toggle source
# File lib/action_mailer/inline_preview_interceptor.rb, line 57
def find_part(cid)
  message.all_parts.find{ |p| p.attachment? && p.cid == cid }
end
html_part() click to toggle source
# File lib/action_mailer/inline_preview_interceptor.rb, line 45
def html_part
  @html_part ||= message.html_part
end
html_source() click to toggle source
# File lib/action_mailer/inline_preview_interceptor.rb, line 49
def html_source
  html_part.body.raw_source
end
message() click to toggle source
# File lib/action_mailer/inline_preview_interceptor.rb, line 41
def message
  @message
end