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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
# Converts a hash into a string suitable for use as a URL query string. An optional <tt>namespace</tt> can be
# passed to enclose the param names (see example below).
#
# ==== Examples
# { :name => 'David', :nationality => 'Danish' }.to_param # => "name=David&nationality=Danish"
#
# { :name => 'David', :nationality => 'Danish' }.to_param('user') # => "user[name]=David&user[nationality]=Danish"
def to_param(namespace = nil)
collect do |key, value|
value.to_query(namespace ? "#{namespace}[#{key}]" : key)
end.sort * '&'
end
end
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