diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/object/to_param.rb')
-rw-r--r-- | activesupport/lib/active_support/core_ext/object/to_param.rb | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/to_param.rb b/activesupport/lib/active_support/core_ext/object/to_param.rb new file mode 100644 index 0000000000..a5e2260791 --- /dev/null +++ b/activesupport/lib/active_support/core_ext/object/to_param.rb @@ -0,0 +1,47 @@ +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_query # => "name=David&nationality=Danish" + # + # { :name => 'David', :nationality => 'Danish' }.to_query('user') # => "user%5Bname%5D=David&user%5Bnationality%5D=Danish" + def to_param(namespace = nil) + collect do |key, value| + value.to_query(namespace ? "#{namespace}[#{key}]" : key) + end.sort * '&' + end +end |