lib/core_ext/object/to_param.rb
# If ActiveSupport is available, use the #to_param method it provides,
# otherwise, use our own. The code is taken from ActiveSupport 3.2.8.
begin
require 'active_support/core_ext/object/to_param'
rescue LoadError
# Copyright (c) 2005-2012 David Heinemeier Hansson
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
class Object
# Alias of <tt>to_s</tt>.
def to_param
to_s
end
end
class NilClass
def to_param
self
end
end
class TrueClass
def to_param
self
end
end
class FalseClass
def to_param
self
end
end
class Array
# Calls <tt>to_param</tt> on all its elements and joins the result with
# slashes. This is used by <tt>url_for</tt> in Action Pack.
def to_param
collect { |e| e.to_param }.join '/'
end
end
class Hash
# Returns a string representation of the receiver suitable for use as a URL
# query string:
#
# {:name => 'David', :nationality => 'Danish'}.to_param
# # => "name=David&nationality=Danish"
#
# An optional namespace can be passed to enclose the param names:
#
# {:name => 'David', :nationality => 'Danish'}.to_param('user')
# # => "user[name]=David&user[nationality]=Danish"
#
# The string pairs "key=value" that conform the query string
# are sorted lexicographically in ascending order.
#
# This method is also aliased as +to_query+.
def to_param(namespace = nil)
collect do |key, value|
value.to_query(namespace ? "#{namespace}[#{key}]" : key)
end.sort * '&'
end
end
end