require 'action_view/renderer/abstract_renderer'
module ActionView
class TemplateRenderer < AbstractRenderer #:nodoc:
def render(options)
wrap_formats(options[:template] || options[:file]) do
template = determine_template(options)
lookup_context.freeze_formats(template.formats, true)
render_template(template, options[:layout], options)
end
end
# Determine the template to be rendered using the given options.
def determine_template(options) #:nodoc:
keys = (options[:locals] ||= {}).keys
if options.key?(:inline)
handler = Template.handler_class_for_extension(options[:type] || "erb")
Template.new(options[:inline], "inline template", handler, { :locals => keys })
elsif options.key?(:text)
Template::Text.new(options[:text], formats.try(:first))
elsif options.key?(:file)
with_fallbacks { find_template(options[:file], options[:prefix], false, keys) }
elsif options.key?(:template)
options[:template].respond_to?(:render) ?
options[:template] : find_template(options[:template], options[:prefix], false, keys)
end
end
# Renders the given template. An string representing the layout can be
# supplied as well.
def render_template(template, layout = nil, options = {}) #:nodoc:
view, locals = @view, options[:locals] || {}
layout = find_layout(layout, locals.keys) if layout
ActiveSupport::Notifications.instrument("render_template.action_view",
:identifier => template.identifier, :layout => layout.try(:virtual_path)) do
content = template.render(view, locals) { |*name| view._layout_for(*name) }
if layout
view.store_content_for(:layout, content)
content = render_layout(layout, locals)
end
content
end
end
# This is the method which actually finds the layout using details in the lookup
# context object. If no layout is found, it checks if at least a layout with
# the given name exists across all details before raising the error.
def find_layout(layout, keys)
begin
with_layout_format do
layout =~ /^\// ?
with_fallbacks { find_template(layout, nil, false, keys) } : find_template(layout, nil, false, keys)
end
rescue ActionView::MissingTemplate => e
update_details(:formats => nil) do
raise unless template_exists?(layout)
end
end
end
end
end