"Default" validation rule, set value from schema

Hello.

When using default validation: http://www.yiiframework.com/doc-2.0/guide-tutorial-core-validators.html#default

is it possible to use the default value defined in the db schema instead of set ‘value’=>‘default schema value’ ?

Yes. http://www.yiiframework.com/doc-2.0/guide-db-active-record.html#default-attribute-values