Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
tree: 37467bf0fc
Fetching contributors…

Cannot retrieve contributors at this time

941 lines (759 sloc) 28.38 kb
require 'erb'
require 'active_support/core_ext/hash/except'
require 'active_support/core_ext/object/blank'
module ActionDispatch
module Routing
class Mapper
class Constraints #:nodoc:
def self.new(app, constraints, request = Rack::Request)
if constraints.any?
super(app, constraints, request)
else
app
end
end
attr_reader :app
def initialize(app, constraints, request)
@app, @constraints, @request = app, constraints, request
end
def call(env)
req = @request.new(env)
@constraints.each { |constraint|
if constraint.respond_to?(:matches?) && !constraint.matches?(req)
return [ 404, {'X-Cascade' => 'pass'}, [] ]
elsif constraint.respond_to?(:call) && !constraint.call(*constraint_args(constraint, req))
return [ 404, {'X-Cascade' => 'pass'}, [] ]
end
}
@app.call(env)
end
private
def constraint_args(constraint, request)
constraint.arity == 1 ? [request] : [request.symbolized_path_parameters, request]
end
end
class Mapping #:nodoc:
IGNORE_OPTIONS = [:to, :as, :via, :on, :constraints, :defaults, :only, :except, :anchor, :shallow, :shallow_path, :shallow_prefix]
def initialize(set, scope, path, options)
@set, @scope = set, scope
@options = (@scope[:options] || {}).merge(options)
@path = normalize_path(path)
normalize_options!
end
def to_route
[ app, conditions, requirements, defaults, @options[:as], @options[:anchor] ]
end
private
def normalize_options!
path_without_format = @path.sub(/\(\.:format\)$/, '')
if using_match_shorthand?(path_without_format, @options)
to_shorthand = @options[:to].blank?
@options[:to] ||= path_without_format[1..-1].sub(%r{/([^/]*)$}, '#\1')
@options[:as] ||= Mapper.normalize_name(path_without_format)
end
@options.merge!(default_controller_and_action(to_shorthand))
end
# match "account/overview"
def using_match_shorthand?(path, options)
path && options.except(:via, :anchor, :to, :as).empty? && path =~ %r{^/[\w\/]+$}
end
def normalize_path(path)
raise ArgumentError, "path is required" if path.blank?
path = Mapper.normalize_path(path)
if path.match(':controller')
raise ArgumentError, ":controller segment is not allowed within a namespace block" if @scope[:module]
# Add a default constraint for :controller path segments that matches namespaced
# controllers with default routes like :controller/:action/:id(.:format), e.g:
# GET /admin/products/show/1
# => { :controller => 'admin/products', :action => 'show', :id => '1' }
@options.reverse_merge!(:controller => /.+?/)
end
if @options[:format] == false
@options.delete(:format)
path
elsif path.include?(":format")
path
else
"#{path}(.:format)"
end
end
def app
Constraints.new(
to.respond_to?(:call) ? to : Routing::RouteSet::Dispatcher.new(:defaults => defaults),
blocks,
@set.request_class
)
end
def conditions
{ :path_info => @path }.merge(constraints).merge(request_method_condition)
end
def requirements
@requirements ||= (@options[:constraints].is_a?(Hash) ? @options[:constraints] : {}).tap do |requirements|
requirements.reverse_merge!(@scope[:constraints]) if @scope[:constraints]
@options.each { |k, v| requirements[k] = v if v.is_a?(Regexp) }
end
end
def defaults
@defaults ||= (@options[:defaults] || {}).tap do |defaults|
defaults.reverse_merge!(@scope[:defaults]) if @scope[:defaults]
@options.each { |k, v| defaults[k] = v unless v.is_a?(Regexp) || IGNORE_OPTIONS.include?(k.to_sym) }
end
end
def default_controller_and_action(to_shorthand=nil)
if to.respond_to?(:call)
{ }
else
if to.is_a?(String)
controller, action = to.split('#')
elsif to.is_a?(Symbol)
action = to.to_s
end
controller ||= default_controller
action ||= default_action
unless controller.is_a?(Regexp) || to_shorthand
controller = [@scope[:module], controller].compact.join("/").presence
end
controller = controller.to_s unless controller.is_a?(Regexp)
action = action.to_s unless action.is_a?(Regexp)
if controller.blank? && segment_keys.exclude?("controller")
raise ArgumentError, "missing :controller"
end
if action.blank? && segment_keys.exclude?("action")
raise ArgumentError, "missing :action"
end
{ :controller => controller, :action => action }.tap do |hash|
hash.delete(:controller) if hash[:controller].blank?
hash.delete(:action) if hash[:action].blank?
end
end
end
def blocks
if @options[:constraints].present? && !@options[:constraints].is_a?(Hash)
block = @options[:constraints]
else
block = nil
end
((@scope[:blocks] || []) + [ block ]).compact
end
def constraints
@constraints ||= requirements.reject { |k, v| segment_keys.include?(k.to_s) || k == :controller }
end
def request_method_condition
if via = @options[:via]
via = Array(via).map { |m| m.to_s.upcase }
{ :request_method => Regexp.union(*via) }
else
{ }
end
end
def segment_keys
@segment_keys ||= Rack::Mount::RegexpWithNamedGroups.new(
Rack::Mount::Strexp.compile(@path, requirements, SEPARATORS)
).names
end
def to
@options[:to]
end
def default_controller
if @options[:controller]
@options[:controller]
elsif @scope[:controller]
@scope[:controller]
end
end
def default_action
if @options[:action]
@options[:action]
elsif @scope[:action]
@scope[:action]
end
end
end
# Invokes Rack::Mount::Utils.normalize path and ensure that
# (:locale) becomes (/:locale) instead of /(:locale). Except
# for root cases, where the latter is the correct one.
def self.normalize_path(path)
path = Rack::Mount::Utils.normalize_path(path)
path.gsub!(%r{/(\(+)/?}, '\1/') unless path =~ %r{^/\(+[^/]+\)$}
path
end
def self.normalize_name(name)
normalize_path(name)[1..-1].gsub("/", "_")
end
module Base
def initialize(set) #:nodoc:
@set = set
end
def root(options = {})
match '/', options.reverse_merge(:as => :root)
end
def match(path, options=nil)
mapping = Mapping.new(@set, @scope, path, options || {}).to_route
@set.add_route(*mapping)
self
end
def mount(app, options = nil)
if options
path = options.delete(:at)
else
options = app
app, path = options.find { |k, v| k.respond_to?(:call) }
options.delete(app) if app
end
raise "A rack application must be specified" unless path
match(path, options.merge(:to => app, :anchor => false, :format => false))
self
end
def default_url_options=(options)
@set.default_url_options = options
end
alias_method :default_url_options, :default_url_options=
end
module HttpHelpers
def get(*args, &block)
map_method(:get, *args, &block)
end
def post(*args, &block)
map_method(:post, *args, &block)
end
def put(*args, &block)
map_method(:put, *args, &block)
end
def delete(*args, &block)
map_method(:delete, *args, &block)
end
def redirect(*args, &block)
options = args.last.is_a?(Hash) ? args.pop : {}
path = args.shift || block
path_proc = path.is_a?(Proc) ? path : proc { |params| path % params }
status = options[:status] || 301
lambda do |env|
req = Request.new(env)
params = [req.symbolized_path_parameters]
params << req if path_proc.arity > 1
uri = URI.parse(path_proc.call(*params))
uri.scheme ||= req.scheme
uri.host ||= req.host
uri.port ||= req.port unless req.standard_port?
body = %(<html><body>You are being <a href="#{ERB::Util.h(uri.to_s)}">redirected</a>.</body></html>)
headers = {
'Location' => uri.to_s,
'Content-Type' => 'text/html',
'Content-Length' => body.length.to_s
}
[ status, headers, [body] ]
end
end
private
def map_method(method, *args, &block)
options = args.extract_options!
options[:via] = method
args.push(options)
match(*args, &block)
self
end
end
module Scoping
def initialize(*args) #:nodoc:
@scope = {}
super
end
def scope(*args)
options = args.extract_options!
options = options.dup
if name_prefix = options.delete(:name_prefix)
options[:as] ||= name_prefix
ActiveSupport::Deprecation.warn ":name_prefix was deprecated in the new router syntax. Use :as instead.", caller
end
options[:path] = args.first if args.first.is_a?(String)
recover = {}
options[:constraints] ||= {}
unless options[:constraints].is_a?(Hash)
block, options[:constraints] = options[:constraints], {}
end
scope_options.each do |option|
if value = options.delete(option)
recover[option] = @scope[option]
@scope[option] = send("merge_#{option}_scope", @scope[option], value)
end
end
recover[:block] = @scope[:blocks]
@scope[:blocks] = merge_blocks_scope(@scope[:blocks], block)
recover[:options] = @scope[:options]
@scope[:options] = merge_options_scope(@scope[:options], options)
yield
self
ensure
scope_options.each do |option|
@scope[option] = recover[option] if recover.has_key?(option)
end
@scope[:options] = recover[:options]
@scope[:blocks] = recover[:block]
end
def controller(controller, options={})
options[:controller] = controller
scope(options) { yield }
end
def namespace(path, options = {})
path = path.to_s
options = { :path => path, :as => path, :module => path,
:shallow_path => path, :shallow_prefix => path }.merge!(options)
scope(options) { yield }
end
def constraints(constraints = {})
scope(:constraints => constraints) { yield }
end
def defaults(defaults = {})
scope(:defaults => defaults) { yield }
end
private
def scope_options
@scope_options ||= private_methods.grep(/^merge_(.+)_scope$/) { $1.to_sym }
end
def merge_path_scope(parent, child)
Mapper.normalize_path("#{parent}/#{child}")
end
def merge_shallow_path_scope(parent, child)
Mapper.normalize_path("#{parent}/#{child}")
end
def merge_as_scope(parent, child)
parent ? "#{parent}_#{child}" : child
end
def merge_shallow_prefix_scope(parent, child)
parent ? "#{parent}_#{child}" : child
end
def merge_module_scope(parent, child)
parent ? "#{parent}/#{child}" : child
end
def merge_controller_scope(parent, child)
child
end
def merge_path_names_scope(parent, child)
merge_options_scope(parent, child)
end
def merge_constraints_scope(parent, child)
merge_options_scope(parent, child)
end
def merge_defaults_scope(parent, child)
merge_options_scope(parent, child)
end
def merge_blocks_scope(parent, child)
merged = parent ? parent.dup : []
merged << child if child
merged
end
def merge_options_scope(parent, child)
(parent || {}).except(*override_keys(child)).merge(child)
end
def merge_shallow_scope(parent, child)
child ? true : false
end
def override_keys(child)
child.key?(:only) || child.key?(:except) ? [:only, :except] : []
end
end
module Resources
# CANONICAL_ACTIONS holds all actions that does not need a prefix or
# a path appended since they fit properly in their scope level.
VALID_ON_OPTIONS = [:new, :collection, :member]
RESOURCE_OPTIONS = [:as, :controller, :path, :only, :except]
CANONICAL_ACTIONS = %w(index create new show update destroy)
class Resource #:nodoc:
DEFAULT_ACTIONS = [:index, :create, :new, :show, :update, :destroy, :edit]
attr_reader :controller, :path, :options
def initialize(entities, options = {})
@name = entities.to_s
@path = (options.delete(:path) || @name).to_s
@controller = (options.delete(:controller) || @name).to_s
@as = options.delete(:as)
@options = options
end
def default_actions
self.class::DEFAULT_ACTIONS
end
def actions
if only = @options[:only]
Array(only).map(&:to_sym)
elsif except = @options[:except]
default_actions - Array(except).map(&:to_sym)
else
default_actions
end
end
def name
@as || @name
end
def plural
@plural ||= name.to_s
end
def singular
@singular ||= name.to_s.singularize
end
alias :member_name :singular
# Checks for uncountable plurals, and appends "_index" if they're.
def collection_name
singular == plural ? "#{plural}_index" : plural
end
def resource_scope
{ :controller => controller }
end
alias :collection_scope :path
def member_scope
"#{path}/:id"
end
def new_scope(new_path)
"#{path}/#{new_path}"
end
def nested_scope
"#{path}/:#{singular}_id"
end
end
class SingletonResource < Resource #:nodoc:
DEFAULT_ACTIONS = [:show, :create, :update, :destroy, :new, :edit]
def initialize(entities, options)
@name = entities.to_s
@path = (options.delete(:path) || @name).to_s
@controller = (options.delete(:controller) || plural).to_s
@as = options.delete(:as)
@options = options
end
def plural
@plural ||= name.to_s.pluralize
end
def singular
@singular ||= name.to_s
end
alias :member_name :singular
alias :collection_name :singular
alias :member_scope :path
alias :nested_scope :path
end
def initialize(*args) #:nodoc:
super
@scope[:path_names] = @set.resources_path_names
end
def resources_path_names(options)
@scope[:path_names].merge!(options)
end
def resource(*resources, &block)
options = resources.extract_options!
if apply_common_behavior_for(:resource, resources, options, &block)
return self
end
resource_scope(SingletonResource.new(resources.pop, options)) do
yield if block_given?
collection_scope do
post :create
end if parent_resource.actions.include?(:create)
new_scope do
get :new
end if parent_resource.actions.include?(:new)
member_scope do
get :edit if parent_resource.actions.include?(:edit)
get :show if parent_resource.actions.include?(:show)
put :update if parent_resource.actions.include?(:update)
delete :destroy if parent_resource.actions.include?(:destroy)
end
end
self
end
def resources(*resources, &block)
options = resources.extract_options!
if apply_common_behavior_for(:resources, resources, options, &block)
return self
end
resource_scope(Resource.new(resources.pop, options)) do
yield if block_given?
collection_scope do
get :index if parent_resource.actions.include?(:index)
post :create if parent_resource.actions.include?(:create)
end
new_scope do
get :new
end if parent_resource.actions.include?(:new)
member_scope do
get :edit if parent_resource.actions.include?(:edit)
get :show if parent_resource.actions.include?(:show)
put :update if parent_resource.actions.include?(:update)
delete :destroy if parent_resource.actions.include?(:destroy)
end
end
self
end
def collection
unless @scope[:scope_level] == :resources
raise ArgumentError, "can't use collection outside resources scope"
end
collection_scope do
yield
end
end
def member
unless resource_scope?
raise ArgumentError, "can't use member outside resource(s) scope"
end
member_scope do
yield
end
end
def new
unless resource_scope?
raise ArgumentError, "can't use new outside resource(s) scope"
end
new_scope do
yield
end
end
def nested
unless resource_scope?
raise ArgumentError, "can't use nested outside resource(s) scope"
end
with_scope_level(:nested) do
if shallow?
with_exclusive_scope do
if @scope[:shallow_path].blank?
scope(parent_resource.nested_scope, nested_options) { yield }
else
scope(@scope[:shallow_path], :as => @scope[:shallow_prefix]) do
scope(parent_resource.nested_scope, nested_options) { yield }
end
end
end
else
scope(parent_resource.nested_scope, nested_options) { yield }
end
end
end
def namespace(path, options = {})
if resource_scope?
nested { super }
else
super
end
end
def shallow
scope(:shallow => true) do
yield
end
end
def shallow?
parent_resource.instance_of?(Resource) && @scope[:shallow]
end
def match(*args)
options = args.extract_options!.dup
options[:anchor] = true unless options.key?(:anchor)
if args.length > 1
args.each { |path| match(path, options.dup) }
return self
end
on = options.delete(:on)
if VALID_ON_OPTIONS.include?(on)
args.push(options)
return send(on){ match(*args) }
elsif on
raise ArgumentError, "Unknown scope #{on.inspect} given to :on"
end
if @scope[:scope_level] == :resources
args.push(options)
return nested { match(*args) }
elsif @scope[:scope_level] == :resource
args.push(options)
return member { match(*args) }
end
action = args.first
path = path_for_action(action, options.delete(:path))
if action.to_s =~ /^[\w\/]+$/
options[:action] ||= action unless action.to_s.include?("/")
options[:as] = name_for_action(action, options[:as])
else
options[:as] = name_for_action(options[:as])
end
super(path, options)
end
def root(options={})
if @scope[:scope_level] == :resources
with_scope_level(:root) do
scope(parent_resource.path) do
super(options)
end
end
else
super(options)
end
end
protected
def parent_resource #:nodoc:
@scope[:scope_level_resource]
end
def apply_common_behavior_for(method, resources, options, &block)
if resources.length > 1
resources.each { |r| send(method, r, options, &block) }
return true
end
options.keys.each do |k|
(options[:constraints] ||= {})[k] = options.delete(k) if options[k].is_a?(Regexp)
end
scope_options = options.slice!(*RESOURCE_OPTIONS)
unless scope_options.empty?
scope(scope_options) do
send(method, resources.pop, options, &block)
end
return true
end
unless action_options?(options)
options.merge!(scope_action_options) if scope_action_options?
end
if resource_scope?
nested do
send(method, resources.pop, options, &block)
end
return true
end
false
end
def action_options?(options)
options[:only] || options[:except]
end
def scope_action_options?
@scope[:options].is_a?(Hash) && (@scope[:options][:only] || @scope[:options][:except])
end
def scope_action_options
@scope[:options].slice(:only, :except)
end
def resource_scope?
[:resource, :resources].include?(@scope[:scope_level])
end
def resource_method_scope?
[:collection, :member, :new].include?(@scope[:scope_level])
end
def with_exclusive_scope
begin
old_name_prefix, old_path = @scope[:as], @scope[:path]
@scope[:as], @scope[:path] = nil, nil
with_scope_level(:exclusive) do
yield
end
ensure
@scope[:as], @scope[:path] = old_name_prefix, old_path
end
end
def with_scope_level(kind, resource = parent_resource)
old, @scope[:scope_level] = @scope[:scope_level], kind
old_resource, @scope[:scope_level_resource] = @scope[:scope_level_resource], resource
yield
ensure
@scope[:scope_level] = old
@scope[:scope_level_resource] = old_resource
end
def resource_scope(resource)
with_scope_level(resource.is_a?(SingletonResource) ? :resource : :resources, resource) do
scope(parent_resource.resource_scope) do
yield
end
end
end
def new_scope
with_scope_level(:new) do
scope(parent_resource.new_scope(action_path(:new))) do
yield
end
end
end
def collection_scope
with_scope_level(:collection) do
scope(parent_resource.collection_scope) do
yield
end
end
end
def member_scope
with_scope_level(:member) do
scope(parent_resource.member_scope) do
yield
end
end
end
def nested_options
{}.tap do |options|
options[:as] = parent_resource.member_name
options[:constraints] = { "#{parent_resource.singular}_id".to_sym => id_constraint } if id_constraint?
end
end
def id_constraint?
@scope[:id].is_a?(Regexp) || (@scope[:constraints] && @scope[:constraints][:id].is_a?(Regexp))
end
def id_constraint
@scope[:id] || @scope[:constraints][:id]
end
def canonical_action?(action, flag)
flag && resource_method_scope? && CANONICAL_ACTIONS.include?(action.to_s)
end
def shallow_scoping?
shallow? && @scope[:scope_level] == :member
end
def path_for_action(action, path)
prefix = shallow_scoping? ?
"#{@scope[:shallow_path]}/#{parent_resource.path}/:id" : @scope[:path]
path = if canonical_action?(action, path.blank?)
prefix.to_s
else
"#{prefix}/#{action_path(action, path)}"
end
end
def action_path(name, path = nil)
path || @scope[:path_names][name.to_sym] || name.to_s
end
def prefix_name_for_action(action, as)
if as.present?
as.to_s
elsif as
nil
elsif !canonical_action?(action, @scope[:scope_level])
action.to_s
end
end
def name_for_action(action, as=nil)
prefix = prefix_name_for_action(action, as)
prefix = Mapper.normalize_name(prefix) if prefix
name_prefix = @scope[:as]
if parent_resource
collection_name = parent_resource.collection_name
member_name = parent_resource.member_name
end
name = case @scope[:scope_level]
when :nested
[member_name, prefix]
when :collection
[prefix, name_prefix, collection_name]
when :new
[prefix, :new, name_prefix, member_name]
when :member
[prefix, shallow_scoping? ? @scope[:shallow_prefix] : name_prefix, member_name]
when :root
[name_prefix, collection_name, prefix]
else
[name_prefix, member_name, prefix]
end
name.select(&:present?).join("_").presence
end
end
module Shorthand
def match(*args)
if args.size == 1 && args.last.is_a?(Hash)
options = args.pop
path, to = options.find { |name, value| name.is_a?(String) }
options.merge!(:to => to).delete(path)
super(path, options)
else
super
end
end
end
include Base
include HttpHelpers
include Scoping
include Resources
include Shorthand
end
end
end
Jump to Line
Something went wrong with that request. Please try again.