haml--haml/lib/haml/template/patch.rb

59 lines
2.4 KiB
Ruby

# 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)
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