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Contents
require 'cgi'
class Object
# Alias of <tt>to_s</tt>.
def to_param
to_s
end
# Converts an object into a string suitable for use as a URL query string,
# using the given <tt>key</tt> as the param name.
def to_query(key)
"#{CGI.escape(key.to_param)}=#{CGI.escape(to_param.to_s)}"
end
end
class NilClass
# Returns +self+.
def to_param
self
end
end
class TrueClass
# Returns +self+.
def to_param
self
end
end
class FalseClass
# Returns +self+.
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(&:to_param).join '/'
end
# Converts an array into a string suitable for use as a URL query string,
# using the given +key+ as the param name.
#
# ['Rails', 'coding'].to_query('hobbies') # => "hobbies%5B%5D=Rails&hobbies%5B%5D=coding"
def to_query(key)
prefix = "#{key}[]"
if empty?
nil.to_query(prefix)
else
collect { |value| value.to_query(prefix) }.join '&'
end
end
end
class Hash
# Returns a string representation of the receiver suitable for use as a URL
# query string:
# @example
# {name: 'David', nationality: 'Danish'}.to_query
# # => "name=David&nationality=Danish"
#
# An optional namespace can be passed to enclose key names:
# @example
# {name: 'David', nationality: 'Danish'}.to_query('user')
# # => "user%5Bname%5D=David&user%5Bnationality%5D=Danish"
#
# The string pairs "key=value" that conform the query string
# are sorted lexicographically in ascending order.
#
# This method is also aliased as +to_param+.
def to_query(namespace = nil)
collect do |key, value|
unless (value.is_a?(Hash) || value.is_a?(Array)) && value.empty?
value.to_query(namespace ? "#{namespace}[#{key}]" : key)
end
end.compact.sort! * '&'
end
alias to_param to_query
end
Version data entries
12 entries across 12 versions & 1 rubygems