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Contents
# frozen_string_literal: true
require 'haml'
module Intranet
class Core
# Wrapps the Haml engine from the Haml gem.
# This module has to be included in any class wanting to generate a HTML/XML
# from HAML templates.
module HamlWrapper
# @!visibility protected
# The default path to the HAML files.
DEFAULT_HAML_DIR = File.join(__dir__, '..', 'resources', 'haml')
class << self
# @!visibility protected
# Haml load path (not to be modified directly)
attr_accessor :load_path
end
# @!visibility protected
# Initializes HAML templates load path.
# @param default_haml_dir [String] The path to the directory containing default HAML
# templates.
def self.initialize(default_haml_dir = DEFAULT_HAML_DIR)
self.load_path = [default_haml_dir]
end
# @!visibility protected
# Adds a HAML templates directory.
# @param dir [String] The path to the directory to add.
def self.add_path(dir)
HamlWrapper.load_path.unshift(dir) # prepend load_path
end
# Generate the HTML/XML from a given HAML template.
# @param template [String] The name of the HAML template to use.
# @param content [Hash] The additional content required to generate the HTML/XML.
# @return [String] The HTML/XML content.
def to_markup(template, content = {})
fd = File.read(find_template(template))
Haml::Engine.new(fd, escape_html: false).render(self, content)
rescue Errno::ENOENT # template file does not exists
''
end
private
# Look for an HAML template in the registered paths.
# @return [String] The path to the template if it exists, an empty string otherwise.
def find_template(template)
HamlWrapper.load_path.each do |dir|
candidate = File.join(dir, template + '.haml')
return candidate if File.exist?(candidate)
end
''
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems