lib/haml/template/patch.rb
# This file makes Haml work with Rails # by monkeypatching the core template-compilation methods. # This is necessary for versions <= 2.0.1 because the template handler API # wasn't sufficiently powerful to deal with caching and so forth. # This module refers to the ActionView module that's part of Ruby on Rails. # Haml can be used as an alternate templating engine for it, # and includes several modifications to make it more Haml-friendly. # The documentation can be found # here[http://rubyonrails.org/api/classes/ActionView/Base.html]. module ActionView class Base # :nodoc: def delegate_template_exists_with_haml(template_path) template_exists?(template_path, :haml) && [:haml] end alias_method :delegate_template_exists_without_haml, :delegate_template_exists? alias_method :delegate_template_exists?, :delegate_template_exists_with_haml def compile_template_with_haml(extension, template, file_name, local_assigns) return compile_haml(template, file_name, local_assigns) if extension.to_s == "haml" compile_template_without_haml(extension, template, file_name, local_assigns) end alias_method :compile_template_without_haml, :compile_template alias_method :compile_template, :compile_template_with_haml def compile_haml(template, file_name, local_assigns) render_symbol = assign_method_name(:haml, template, file_name) locals = local_assigns.keys @@template_args[render_symbol] ||= {} locals_keys = @@template_args[render_symbol].keys | locals @@template_args[render_symbol] = locals_keys.inject({}) { |h, k| h[k] = true; h } options = Haml::Template.options.dup options[:filename] = file_name || 'compiled-template' begin Haml::Engine.new(template, options).def_method(CompiledTemplates, render_symbol, *locals_keys) rescue Exception => e if logger logger.debug "ERROR: compiling #{render_symbol} RAISED #{e}" logger.debug "Backtrace: #{e.backtrace.join("\n")}" end base_path = if defined?(extract_base_path_from) # Rails 2.0.x extract_base_path_from(file_name) || view_paths.first else # Rails <=1.2.6 @base_path end raise ActionView::TemplateError.new(base_path, file_name || template, @assigns, template, e) end @@compile_time[render_symbol] = Time.now end end end