travis-api/lib/travis/api/v3/renderer.rb
2015-04-28 16:46:45 +02:00

66 lines
2.4 KiB
Ruby

module Travis::API::V3
module Renderer
PRIMITIVE = [String, Symbol, Numeric, true, false, nil]
private_constant :PRIMITIVE
EXPANDER_CACHE = Tool::ThreadLocal.new
private_constant :EXPANDER_CACHE
extend ConstantResolver
extend self
def clear(**args)
args.select { |key, value| !value.nil? }
end
def href(type, string_args = nil, script_name: nil, **args)
args.merge! string_args if string_args
expander = EXPANDER_CACHE[[type, script_name, args.keys]] ||= begin
resource = Routes.resources.detect { |r| r.identifier == type }
verb, sub = resource.services.key(:find) if resource
route = resource.route if verb
route += sub if sub
route &&= Mustermann.new(script_name, type: :identity) + route if script_name and not script_name.empty?
key_mapping = {}
args.keys.each do |key|
case key.to_s
when /\./ then key_mapping[key.to_sym] = key unless key.is_a? Symbol
when /^(.+)_id$/ then key_mapping[:"#{$1}.id"] = key
else key_mapping[:"#{type}.#{key}"] = key
end
end
generate_expander(route, key_mapping)
end
expander.call(args)
end
def render_model(model, type: model.class.name[/[^:]+$/].to_sym, mode: nil, **options)
Renderer[type].render(model, mode || :minimal, **options)
end
def render_value(value, **options)
case value
when Hash then value.map { |k, v| [k, render_value(v, **options)] }.to_h
when Array then value.map { |v | render_value(v, **options) }
when *PRIMITIVE then value
when Time then value.strftime('%Y-%m-%dT%H:%M:%SZ')
when Model then render_model(value, **options)
when ActiveRecord::Relation then render_value(value.to_a, **options)
else raise ArgumentError, 'cannot render %p (%p)' % [value.class, value]
end
end
private
def generate_expander(route, key_mapping)
return proc { |**| } unless route.respond_to? :expand
proc do |args|
key_mapping.each { |a, b| args[a] = args.delete(b) }
route.expand(:ignore, **args)
end
end
end
end