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require 'action_view'
begin
require 'rabl' # use rabl gem if it's available
rescue LoadError
end
begin
require 'rabl-rails' # use rabl-rails gem if it's available
rescue LoadError
end
class Gon
module Rabl
class << self
def handler(args, global = false)
options = parse_options_from args, global
if global && !options[:template]
raise 'You should provide :template when use rabl with global variables'
end
data = parse_rabl \
Gon::EnvFinder.template_path(options, 'rabl'),
Gon::EnvFinder.controller_env(options),
options[:locals]
[data, options]
end
private
def parse_rabl(rabl_path, controller, locals)
if defined? ::Rabl
parse_with_rabl rabl_path, controller, locals
elsif defined? ::RablRails
parse_with_rabl_rails rabl_path, controller, locals
else
raise 'rabl or rabl-rails must be required in order to use gon.rabl'
end
end
def parse_with_rabl(rabl_path, controller, locals)
locals ||= {}
source = File.read(rabl_path)
include_helpers
rabl_engine = ::Rabl::Engine.new(source, :format => 'json', :template => rabl_path)
output = rabl_engine.render(controller, locals)
JSON.parse(output)
end
def parse_with_rabl_rails(rabl_path, controller, locals)
locals ||= {}
source = File.read(rabl_path)
original_formats = controller.formats
controller.formats = [:json]
view_context = controller.send(:view_context)
locals.each { |k, v| view_context.assigns[k.to_s] = v }
output = RablRails::Library.instance.get_rendered_template(source, view_context)
controller.formats = original_formats
JSON.parse(output)
end
def parse_options_from(args, global)
if old_api? args
unless global
text = "[DEPRECATION] view_path argument is now optional. "
text << "If you need to specify it, "
text << "please use gon.rabl(:template => 'path')"
warn text
end
args.extract_options!.merge(:template => args[0])
elsif new_api? args
args.first
else
{}
end
end
def include_helpers
unless ::Rabl::Engine.include? ::ActionView::Helpers
::Rabl::Engine.send(:include, ::ActionView::Helpers)
end
end
def old_api?(args)
args.first.is_a? String
end
def new_api?(args)
args.first.is_a? Hash
end
end
end
end
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