mirror of
https://github.com/rails/rails.git
synced 2022-11-09 12:12:34 -05:00
afdf52402e
Signed-off-by: José Valim <jose.valim@gmail.com>
649 lines
19 KiB
Ruby
649 lines
19 KiB
Ruby
module ActionDispatch
|
|
module Routing
|
|
class Mapper
|
|
class Constraints
|
|
def self.new(app, constraints = [])
|
|
if constraints.any?
|
|
super(app, constraints)
|
|
else
|
|
app
|
|
end
|
|
end
|
|
|
|
def initialize(app, constraints = [])
|
|
@app, @constraints = app, constraints
|
|
end
|
|
|
|
def call(env)
|
|
req = Rack::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(req)
|
|
return [ 404, {'X-Cascade' => 'pass'}, [] ]
|
|
end
|
|
}
|
|
|
|
@app.call(env)
|
|
end
|
|
end
|
|
|
|
class Mapping
|
|
def initialize(set, scope, args)
|
|
@set, @scope = set, scope
|
|
@path, @options = extract_path_and_options(args)
|
|
end
|
|
|
|
def to_route
|
|
[ app, conditions, requirements, defaults, @options[:as] ]
|
|
end
|
|
|
|
private
|
|
def extract_path_and_options(args)
|
|
options = args.extract_options!
|
|
|
|
case
|
|
when using_to_shorthand?(args, options)
|
|
path, to = options.find { |name, value| name.is_a?(String) }
|
|
options.merge!(:to => to).delete(path) if path
|
|
when using_match_shorthand?(args, options)
|
|
path = args.first
|
|
options = { :to => path.gsub("/", "#"), :as => path.gsub("/", "_") }
|
|
else
|
|
path = args.first
|
|
end
|
|
|
|
[ normalize_path(path), options ]
|
|
end
|
|
|
|
# match "account" => "account#index"
|
|
def using_to_shorthand?(args, options)
|
|
args.empty? && options.present?
|
|
end
|
|
|
|
# match "account/overview"
|
|
def using_match_shorthand?(args, options)
|
|
args.present? && options.except(:via).empty? && !args.first.include?(':')
|
|
end
|
|
|
|
def normalize_path(path)
|
|
path = "#{@scope[:path]}/#{path}"
|
|
raise ArgumentError, "path is required" if path.empty?
|
|
Mapper.normalize_path(path)
|
|
end
|
|
|
|
def app
|
|
Constraints.new(
|
|
to.respond_to?(:call) ? to : Routing::RouteSet::Dispatcher.new(:defaults => defaults),
|
|
blocks
|
|
)
|
|
end
|
|
|
|
def conditions
|
|
{ :path_info => @path }.merge(constraints).merge(request_method_condition)
|
|
end
|
|
|
|
def requirements
|
|
@requirements ||= returning(@options[:constraints] || {}) do |requirements|
|
|
requirements.reverse_merge!(@scope[:constraints]) if @scope[:constraints]
|
|
@options.each { |k, v| requirements[k] = v if v.is_a?(Regexp) }
|
|
requirements[:controller] ||= @set.controller_constraints
|
|
end
|
|
end
|
|
|
|
def defaults
|
|
@defaults ||= if to.respond_to?(:call)
|
|
{ }
|
|
else
|
|
defaults = case to
|
|
when String
|
|
controller, action = to.split('#')
|
|
{ :controller => controller, :action => action }
|
|
when Symbol
|
|
{ :action => to.to_s }.merge(default_controller ? { :controller => default_controller } : {})
|
|
else
|
|
default_controller ? { :controller => default_controller } : {}
|
|
end
|
|
|
|
if defaults[:controller].blank? && segment_keys.exclude?("controller")
|
|
raise ArgumentError, "missing :controller"
|
|
end
|
|
|
|
if defaults[:action].blank? && segment_keys.exclude?("action")
|
|
raise ArgumentError, "missing :action"
|
|
end
|
|
|
|
defaults
|
|
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
|
|
@scope[:controller].to_s if @scope[:controller]
|
|
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.sub!(%r{/(\(+)/?:}, '\1/:') unless path =~ %r{^/\(+:.*\)$}
|
|
path
|
|
end
|
|
|
|
module Base
|
|
def initialize(set)
|
|
@set = set
|
|
end
|
|
|
|
def root(options = {})
|
|
match '/', options.reverse_merge(:as => :root)
|
|
end
|
|
|
|
def match(*args)
|
|
@set.add_route(*Mapping.new(@set, @scope, args).to_route)
|
|
self
|
|
end
|
|
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
|
|
body = 'Moved Permanently'
|
|
|
|
lambda do |env|
|
|
req = Request.new(env)
|
|
uri = URI.parse(path_proc.call(req.symbolized_path_parameters))
|
|
uri.scheme ||= req.scheme
|
|
uri.host ||= req.host
|
|
uri.port ||= req.port unless req.port == 80
|
|
|
|
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)
|
|
@scope = {}
|
|
super
|
|
end
|
|
|
|
def scope(*args)
|
|
options = args.extract_options!
|
|
|
|
case args.first
|
|
when String
|
|
options[:path] = args.first
|
|
when Symbol
|
|
options[:controller] = args.first
|
|
end
|
|
|
|
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)
|
|
scope(controller.to_sym) { yield }
|
|
end
|
|
|
|
def namespace(path)
|
|
scope(path.to_s, :name_prefix => path.to_s, :namespace => path.to_s) { yield }
|
|
end
|
|
|
|
def constraints(constraints = {})
|
|
scope(:constraints => constraints) { yield }
|
|
end
|
|
|
|
def match(*args)
|
|
options = args.extract_options!
|
|
|
|
options = (@scope[:options] || {}).merge(options)
|
|
|
|
if @scope[:name_prefix] && !options[:as].blank?
|
|
options[:as] = "#{@scope[:name_prefix]}_#{options[:as]}"
|
|
elsif @scope[:name_prefix] && options[:as] == ""
|
|
options[:as] = @scope[:name_prefix].to_s
|
|
end
|
|
|
|
args.push(options)
|
|
super(*args)
|
|
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_name_prefix_scope(parent, child)
|
|
parent ? "#{parent}_#{child}" : child
|
|
end
|
|
|
|
def merge_namespace_scope(parent, child)
|
|
parent ? "#{parent}/#{child}" : child
|
|
end
|
|
|
|
def merge_controller_scope(parent, child)
|
|
@scope[:namespace] ? "#{@scope[:namespace]}/#{child}" : child
|
|
end
|
|
|
|
def merge_resources_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_blocks_scope(parent, child)
|
|
(parent || []) + [child]
|
|
end
|
|
|
|
def merge_options_scope(parent, child)
|
|
(parent || {}).merge(child)
|
|
end
|
|
end
|
|
|
|
module Resources
|
|
CRUD_ACTIONS = [:index, :show, :create, :update, :destroy]
|
|
|
|
class Resource #:nodoc:
|
|
def self.default_actions
|
|
[:index, :create, :new, :show, :update, :destroy, :edit]
|
|
end
|
|
|
|
attr_reader :plural, :singular, :options
|
|
|
|
def initialize(entities, options = {})
|
|
entities = entities.to_s
|
|
@options = options
|
|
|
|
@plural = entities.pluralize
|
|
@singular = entities.singularize
|
|
end
|
|
|
|
def default_actions
|
|
self.class.default_actions
|
|
end
|
|
|
|
def actions
|
|
if only = options[:only]
|
|
only.map(&:to_sym)
|
|
elsif except = options[:except]
|
|
default_actions - except.map(&:to_sym)
|
|
else
|
|
default_actions
|
|
end
|
|
end
|
|
|
|
def action_type(action)
|
|
case action
|
|
when :index, :create
|
|
:collection
|
|
when :show, :update, :destroy
|
|
:member
|
|
end
|
|
end
|
|
|
|
def name
|
|
options[:as] || plural
|
|
end
|
|
|
|
def controller
|
|
options[:controller] || plural
|
|
end
|
|
|
|
def member_name
|
|
singular
|
|
end
|
|
|
|
def collection_name
|
|
plural
|
|
end
|
|
|
|
def name_for_action(action)
|
|
case action_type(action)
|
|
when :collection
|
|
collection_name
|
|
when :member
|
|
member_name
|
|
end
|
|
end
|
|
|
|
def id_segment
|
|
":#{singular}_id"
|
|
end
|
|
end
|
|
|
|
class SingletonResource < Resource #:nodoc:
|
|
def self.default_actions
|
|
[:show, :create, :update, :destroy, :new, :edit]
|
|
end
|
|
|
|
def initialize(entity, options = {})
|
|
super
|
|
end
|
|
|
|
def action_type(action)
|
|
case action
|
|
when :show, :create, :update, :destroy
|
|
:member
|
|
end
|
|
end
|
|
|
|
def name
|
|
options[:as] || singular
|
|
end
|
|
end
|
|
|
|
def initialize(*args)
|
|
super
|
|
@scope[:resources_path_names] = @set.resources_path_names
|
|
end
|
|
|
|
def resource(*resources, &block)
|
|
options = resources.extract_options!
|
|
|
|
if verify_common_behavior_for(:resource, resources, options, &block)
|
|
return self
|
|
end
|
|
|
|
resource = SingletonResource.new(resources.pop, options)
|
|
|
|
scope(:path => resource.name.to_s, :controller => resource.controller) do
|
|
with_scope_level(:resource, resource) do
|
|
yield if block_given?
|
|
|
|
get :show if resource.actions.include?(:show)
|
|
post :create if resource.actions.include?(:create)
|
|
put :update if resource.actions.include?(:update)
|
|
delete :destroy if resource.actions.include?(:destroy)
|
|
get :new, :as => resource.singular if resource.actions.include?(:new)
|
|
get :edit, :as => resource.singular if resource.actions.include?(:edit)
|
|
end
|
|
end
|
|
|
|
self
|
|
end
|
|
|
|
def resources(*resources, &block)
|
|
options = resources.extract_options!
|
|
|
|
if verify_common_behavior_for(:resources, resources, options, &block)
|
|
return self
|
|
end
|
|
|
|
resource = Resource.new(resources.pop, options)
|
|
|
|
scope(:path => resource.name.to_s, :controller => resource.controller) do
|
|
with_scope_level(:resources, resource) do
|
|
yield if block_given?
|
|
|
|
with_scope_level(:collection) do
|
|
get :index if resource.actions.include?(:index)
|
|
post :create if resource.actions.include?(:create)
|
|
get :new, :as => resource.singular if resource.actions.include?(:new)
|
|
end
|
|
|
|
with_scope_level(:member) do
|
|
scope(':id') do
|
|
get :show if resource.actions.include?(:show)
|
|
put :update if resource.actions.include?(:update)
|
|
delete :destroy if resource.actions.include?(:destroy)
|
|
get :edit, :as => resource.singular if resource.actions.include?(:edit)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
self
|
|
end
|
|
|
|
def collection
|
|
unless @scope[:scope_level] == :resources
|
|
raise ArgumentError, "can't use collection outside resources scope"
|
|
end
|
|
|
|
with_scope_level(:collection) do
|
|
scope(:name_prefix => parent_resource.collection_name, :as => "") do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
def member
|
|
unless @scope[:scope_level] == :resources
|
|
raise ArgumentError, "can't use member outside resources scope"
|
|
end
|
|
|
|
with_scope_level(:member) do
|
|
scope(':id', :name_prefix => parent_resource.member_name, :as => "") do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
def nested
|
|
unless @scope[:scope_level] == :resources
|
|
raise ArgumentError, "can't use nested outside resources scope"
|
|
end
|
|
|
|
with_scope_level(:nested) do
|
|
scope(parent_resource.id_segment, :name_prefix => parent_resource.member_name) do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
def match(*args)
|
|
options = args.extract_options!
|
|
|
|
if args.length > 1
|
|
args.each { |path| match(path, options) }
|
|
return self
|
|
end
|
|
|
|
resources_path_names = options.delete(:path_names)
|
|
|
|
if args.first.is_a?(Symbol)
|
|
action = args.first
|
|
if CRUD_ACTIONS.include?(action)
|
|
begin
|
|
old_path = @scope[:path]
|
|
@scope[:path] = "#{@scope[:path]}(.:format)"
|
|
return match(options.reverse_merge(
|
|
:to => action,
|
|
:as => parent_resource.name_for_action(action)
|
|
))
|
|
ensure
|
|
@scope[:path] = old_path
|
|
end
|
|
else
|
|
with_exclusive_name_prefix(action) do
|
|
return match("#{action_path(action, resources_path_names)}(.:format)", options.reverse_merge(:to => action))
|
|
end
|
|
end
|
|
end
|
|
|
|
args.push(options)
|
|
|
|
case options.delete(:on)
|
|
when :collection
|
|
return collection { match(*args) }
|
|
when :member
|
|
return member { match(*args) }
|
|
end
|
|
|
|
if @scope[:scope_level] == :resources
|
|
raise ArgumentError, "can't define route directly in resources scope"
|
|
end
|
|
|
|
super
|
|
end
|
|
|
|
protected
|
|
def parent_resource
|
|
@scope[:scope_level_resource]
|
|
end
|
|
|
|
private
|
|
def action_path(name, path_names = nil)
|
|
path_names ||= @scope[:resources_path_names]
|
|
path_names[name.to_sym] || name.to_s
|
|
end
|
|
|
|
def verify_common_behavior_for(method, resources, options, &block)
|
|
if resources.length > 1
|
|
resources.each { |r| send(method, r, options, &block) }
|
|
return true
|
|
end
|
|
|
|
if path_names = options.delete(:path_names)
|
|
scope(:resources_path_names => path_names) do
|
|
send(method, resources.pop, options, &block)
|
|
end
|
|
return true
|
|
end
|
|
|
|
if @scope[:scope_level] == :resources
|
|
nested do
|
|
send(method, resources.pop, options, &block)
|
|
end
|
|
return true
|
|
end
|
|
|
|
false
|
|
end
|
|
|
|
def with_exclusive_name_prefix(prefix)
|
|
begin
|
|
old_name_prefix = @scope[:name_prefix]
|
|
|
|
if !old_name_prefix.blank?
|
|
@scope[:name_prefix] = "#{prefix}_#{@scope[:name_prefix]}"
|
|
else
|
|
@scope[:name_prefix] = prefix.to_s
|
|
end
|
|
|
|
yield
|
|
ensure
|
|
@scope[:name_prefix] = old_name_prefix
|
|
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
|
|
end
|
|
|
|
include Base
|
|
include HttpHelpers
|
|
include Scoping
|
|
include Resources
|
|
end
|
|
end
|
|
end
|