1 files changed, 11 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb
index 33e4516bd1..82a7c27799 100644
--- a/activerecord/lib/active_record/associations/collection_association.rb
+++ b/activerecord/lib/active_record/associations/collection_association.rb
@@ -63,7 +63,7 @@ module ActiveRecord
       def ids_writer(ids)
         pk_type = reflection.primary_key_type
         ids = Array(ids).reject(&:blank?)
-        ids.map! { |i| pk_type.type_cast_from_user(i) }
+        ids.map! { |i| pk_type.cast(i) }
         replace(klass.find(ids).index_by(&:id).values_at(*ids))
       end
 
@@ -129,6 +129,16 @@ module ActiveRecord
         first_nth_or_last(:last, *args)
       end
 
+      def take
+        if loaded?
+          target.first
+        else
+          scope.take.tap do |record|
+            set_inverse_instance record if record.is_a? ActiveRecord::Base
+          end
+        end
+      end
+
       def build(attributes = {}, &block)
         if attributes.is_a?(Array)
           attributes.collect { |attr| build(attr, &block) }