nested_attributes.rb in ripple-anaf-0.8.0.beta2

- old
+ new

@@ -69,11 +69,35 @@
     #
     #   manifest.update_attributes(:shipment_attributes => [ { :key => 'xxx', :reference => 'updated foo1' },
     #                                                        { :key => 'yyy', :reference => 'updated foo2' } ])
     #   manifest.shipments.first.reference # => updated foo1
     #   manifest.shipments.second.reference # => updated foo2
+    # 
+    # NOTE: On many embedded, then entire collection of embedded documents is replaced, as there
+    # is no key to specifically update.
     #
+    # Given
+    #
+    #   class Manifest
+    #     include Ripple::Documnet
+    #     many :signatures
+    #     accepts_nested_attributes_for :signatures
+    #   end
+    #
+    #   class Signature
+    #     include Ripple::EmbeddedDocument
+    #     property :esignature, String
+    #   end
+    #
+    # The assigning of attributes replaces existing:
+    #   
+    #   manifest = Manifest.create(:signature_attributes => [ { :esig => 'a00001' }, { :esig => 'b00001' } ]
+    #   manifest.signatures # => [<Signature esig="a00001">, <Signature esig="b00001">]
+    #
+    #   manifest.signature_attributes = [ { :esig => 'c00001' } ]
+    #   manifest.signatures # => [<Signature esig="c00001">]
+    #     
     module ClassMethods
     
       def accepts_nested_attributes_for(*attr_names)
         options = { :allow_destroy => false }
         options.update(attr_names.extract_options!)
@@ -182,10 +206,17 @@
           assign_nested_attributes_for_many_linked_association(association_name, attributes_collection)
         end
       end
 
       def assign_nested_attributes_for_many_embedded_association(association_name, attributes_collection)
-        raise NotImplementedError, "Unclear how to identify which embedded document to update without a key"
+        options = nested_attributes_options[association_name]
+        send(:"#{association_name}=", []) # Clobber existing
+        attributes_collection.each do |attributes|
+          attributes = attributes.stringify_keys
+          if !reject_new_record?(association_name, attributes)
+            send(association_name).build(attributes.except(*UNASSIGNABLE_KEYS))
+          end
+        end
       end
 
       def assign_nested_attributes_for_many_linked_association(association_name, attributes_collection)
         options = nested_attributes_options[association_name]
         attributes_collection.each do |attributes|