Added back support for destroying an association's object by id. [#2306…

… status:resolved]

Signed-off-by: José Valim <jose.valim@gmail.com>

activerecord/lib/active_record/associations/association_collection.rb

@@ -208,6 +208,7 @@ def delete(*records)
       # Note that this method will _always_ remove records from the database
       # ignoring the +:dependent+ option.
       def destroy(*records)
+        records = find(records) if records.any? {|record| record.kind_of?(Fixnum) || record.kind_of?(String)}
         remove_records(records) do |records, old_records|
           old_records.each { |record| record.destroy }
         end

activerecord/test/cases/associations/has_many_associations_test.rb

@@ -699,6 +699,28 @@ def test_destroying
     assert_equal 0, companies(:first_firm).clients_of_firm(true).size
   end
 
+  def test_destroying_by_fixnum_id
+    force_signal37_to_load_all_clients_of_firm
+
+    assert_difference "Client.count", -1 do
+      companies(:first_firm).clients_of_firm.destroy(companies(:first_firm).clients_of_firm.first.id)
+    end
+
+    assert_equal 0, companies(:first_firm).reload.clients_of_firm.size
+    assert_equal 0, companies(:first_firm).clients_of_firm(true).size
+  end
+
+  def test_destroying_by_string_id
+    force_signal37_to_load_all_clients_of_firm
+
+    assert_difference "Client.count", -1 do
+      companies(:first_firm).clients_of_firm.destroy(companies(:first_firm).clients_of_firm.first.id.to_s)
+    end
+
+    assert_equal 0, companies(:first_firm).reload.clients_of_firm.size
+    assert_equal 0, companies(:first_firm).clients_of_firm(true).size
+  end
+
   def test_destroying_a_collection
     force_signal37_to_load_all_clients_of_firm
     companies(:first_firm).clients_of_firm.create("name" => "Another Client")