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module ActionView
module RoutingUrlFor
# Returns the URL for the set of +options+ provided. This takes the
# same options as +url_for+ in Action Controller (see the
# documentation for <tt>ActionController::Base#url_for</tt>). Note that by default
# <tt>:only_path</tt> is <tt>true</tt> so you'll get the relative "/controller/action"
# instead of the fully qualified URL like "http://example.com/controller/action".
#
# ==== Options
# * <tt>:anchor</tt> - Specifies the anchor name to be appended to the path.
# * <tt>:only_path</tt> - If true, returns the relative URL (omitting the protocol, host name, and port) (<tt>true</tt> by default unless <tt>:host</tt> is specified).
# * <tt>:trailing_slash</tt> - If true, adds a trailing slash, as in "/archive/2005/". Note that this
# is currently not recommended since it breaks caching.
# * <tt>:host</tt> - Overrides the default (current) host if provided.
# * <tt>:protocol</tt> - Overrides the default (current) protocol if provided.
# * <tt>:user</tt> - Inline HTTP authentication (only plucked out if <tt>:password</tt> is also present).
# * <tt>:password</tt> - Inline HTTP authentication (only plucked out if <tt>:user</tt> is also present).
#
# ==== Relying on named routes
#
# Passing a record (like an Active Record) instead of a hash as the options parameter will
# trigger the named route for that record. The lookup will happen on the name of the class. So passing a
# Workshop object will attempt to use the +workshop_path+ route. If you have a nested route, such as
# +admin_workshop_path+ you'll have to call that explicitly (it's impossible for +url_for+ to guess that route).
#
# ==== Implicit Controller Namespacing
#
# Controllers passed in using the +:controller+ option will retain their namespace unless it is an absolute one.
#
# ==== Examples
# <%= url_for(action: 'index') %>
# # => /blog/
#
# <%= url_for(action: 'find', controller: 'books') %>
# # => /books/find
#
# <%= url_for(action: 'login', controller: 'members', only_path: false, protocol: 'https') %>
# # => https://www.example.com/members/login/
#
# <%= url_for(action: 'play', anchor: 'player') %>
# # => /messages/play/#player
#
# <%= url_for(action: 'jump', anchor: 'tax&ship') %>
# # => /testing/jump/#tax&ship
#
# <%= url_for(Workshop.new) %>
# # relies on Workshop answering a persisted? call (and in this case returning false)
# # => /workshops
#
# <%= url_for(@workshop) %>
# # calls @workshop.to_param which by default returns the id
# # => /workshops/5
#
# # to_param can be re-defined in a model to provide different URL names:
# # => /workshops/1-workshop-name
#
# <%= url_for("http://www.example.com") %>
# # => http://www.example.com
#
# <%= url_for(:back) %>
# # if request.env["HTTP_REFERER"] is set to "http://www.example.com"
# # => http://www.example.com
#
# <%= url_for(:back) %>
# # if request.env["HTTP_REFERER"] is not set or is blank
# # => javascript:history.back()
#
# <%= url_for(action: 'index', controller: 'users') %>
# # Assuming an "admin" namespace
# # => /admin/users
#
# <%= url_for(action: 'index', controller: '/users') %>
# # Specify absolute path with beginning slash
# # => /users
def url_for(options = nil)
case options
when String
options
when nil, Hash
options ||= {}
options = { :only_path => options[:host].nil? }.merge!(options.symbolize_keys)
super
when :back
_back_url
else
polymorphic_path(options)
end
end
def url_options #:nodoc:
return super unless controller.respond_to?(:url_options)
controller.url_options
end
def _routes_context #:nodoc:
controller
end
protected :_routes_context
def optimize_routes_generation? #:nodoc:
controller.respond_to?(:optimize_routes_generation?, true) ?
controller.optimize_routes_generation? : super
end
protected :optimize_routes_generation?
end
end
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