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-rw-r--r--activerecord/lib/active_record/model_schema.rb16
1 files changed, 16 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/model_schema.rb b/activerecord/lib/active_record/model_schema.rb
index c50a420432..55fc58e339 100644
--- a/activerecord/lib/active_record/model_schema.rb
+++ b/activerecord/lib/active_record/model_schema.rb
@@ -102,6 +102,21 @@ module ActiveRecord
# If true, the default table name for a Product class will be "products". If false, it would just be "product".
# See table_name for the full rules on table/class naming. This is true, by default.
+ ##
+ # :singleton-method: implicit_order_column
+ # :call-seq: implicit_order_column
+ #
+ # The name of the column records are ordered by if no explicit order clause
+ # is used during an ordered finder call. If not set the primary key is used.
+
+ ##
+ # :singleton-method: implicit_order_column=
+ # :call-seq: implicit_order_column=(column_name)
+ #
+ # Sets the column to sort records by when no explicit order clause is used
+ # during an ordered finder call. Useful when the primary key is not an
+ # auto-incrementing integer, for example when it's a UUID. Note that using
+ # a non-unique column can result in non-deterministic results.
included do
mattr_accessor :primary_key_prefix_type, instance_writer: false
@@ -110,6 +125,7 @@ module ActiveRecord
class_attribute :schema_migrations_table_name, instance_accessor: false, default: "schema_migrations"
class_attribute :internal_metadata_table_name, instance_accessor: false, default: "ar_internal_metadata"
class_attribute :pluralize_table_names, instance_writer: false, default: true
+ class_attribute :implicit_order_column, instance_accessor: false
self.protected_environments = ["production"]
self.inheritance_column = "type"