class Mjml::Handler

Public Instance Methods

call(template, source = nil) click to toggle source

Optional second source parameter to make it work with Rails >= 6: Beginning with Rails 6 template handlers get the source of the template as the second parameter.

# File lib/mjml/handler.rb, line 14
def call(template, source = nil)
  compiled_source =
    if Rails::VERSION::MAJOR >= 6
      template_handler.call(template, source)
    else
      template_handler.call(template)
    end

  # Per MJML v4 syntax documentation[0] valid/render'able document MUST start with <mjml> root tag
  # If we get here and template source doesn't start with one it means
  # that we are rendering partial named according to legacy naming convention (partials ending with '.mjml')
  # Therefore we skip MJML processing and return raw compiled source. It will be processed
  # by MJML library when top-level layout/template is rendered
  #
  # [0] - https://github.com/mjmlio/mjml/blob/master/doc/guide.md#mjml
  if compiled_source =~ /<mjml.*?>/i
    "Mjml::Parser.new(begin;#{compiled_source};end).render.html_safe"
  else
    compiled_source
  end
end
template_handler() click to toggle source
# File lib/mjml/handler.rb, line 7
def template_handler
  @template_handler ||= ActionView::Template.registered_template_handler(Mjml.template_language)
end