=head1 SYNOPSIS
+ # In your table classes (replace PK::Auto::SQLite with your
+ # database)
+ __PACKAGE__->load_components(qw/PK::Auto::SQLite Core/);
+ __PACKAGE__->set_primary_key('id');
+
=head1 DESCRIPTION
This class overrides the insert method to get automatically
incremented primary keys.
-You don't want to be using this directly - instead load the appropriate
-one for your database, e.g. PK::Auto::SQLite
+You don't want to be using this directly - instead load the
+appropriate one for your database, e.g. C<PK::Auto::SQLite>, in your
+table classes:
+
+ __PACKAGE__->load_components(qw/PK::Auto::SQLite Core/);
+
+Note that C<PK::Auto::SQLite> is specified as the leftmost argument.
+
+Alternatively, you can load the components separately:
+
+ __PACKAGE__->load_components(qw/Core/);
+ __PACKAGE__->load_components(qw/PK::Auto::SQLite/);
+
+This can be used, for example, if you have different databases and
+need to determine the appropriate C<PK::Auto> class at runtime.
+
+=head1 LOGIC
+
+C<PK::Auto> does this by letting the database assign the primary key
+field and fetching the assigned value afterwards.
=head1 METHODS