method

clone

v3.1.0 - Show latest stable - 1 note - Class: ActiveResource::Base

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0 (0)
2.2.1 (0)
2.3.8 (0)
3.0.0 (0)
3.0.9 (-2)
3.1.0 (0)
3.2.1 (0)
3.2.8 (0)
3.2.13 (0)
4.0.2
4.1.8
4.2.1
4.2.7
4.2.9
5.0.0.1
5.1.7
5.2.3
6.0.0
6.1.3.1
6.1.7.7
7.0.0
7.1.3.2
7.1.3.4
What's this?

clone() public

Returns a clone of the resource that hasn’t been assigned an id yet and is treated as a new resource.

ryan = Person.find(1)
not_ryan = ryan.clone
not_ryan.new?  # => true

Any active resource member attributes will NOT be cloned, though all other attributes are. This is to prevent the conflict between any prefix_options that refer to the original parent resource and the newly cloned parent resource that does not exist.

ryan = Person.find(1)
ryan.address = StreetAddress.find(1, :person_id => ryan.id)
ryan.hash = {:not => "an ARes instance"}

not_ryan = ryan.clone
not_ryan.new?            # => true
not_ryan.address         # => NoMethodError
not_ryan.hash            # => {:not => "an ARes instance"}

Show source

# File activeresource/lib/active_resource/base.rb, line 1022
    def clone
      # Clone all attributes except the pk and any nested ARes
      cloned = Hash[attributes.reject {|k,v| k == self.class.primary_key || v.is_a?(ActiveResource::Base)}.map { |k, v| [k, v.clone] }]
      # Form the new resource - bypass initialize of resource with 'new' as that will call 'load' which
      # attempts to convert hashes into member objects and arrays into collections of objects.  We want
      # the raw objects to be cloned so we bypass load by directly setting the attributes hash.
      resource = self.class.new({})
      resource.prefix_options = self.prefix_options
      resource.send :instance_variable_set, '@attributes', cloned
      resource
    end

July 3, 2013 - (>= v3.1.0)

0 thanks

method definition exchanged clone <-> dup since 3.1

http://guides.rubyonrails.org/3_1_release_notes.html#active-record

clone

Related methods

method definition exchanged clone <-> dup since 3.1