Update _form.php
Update _form.php

add cancelable, fix detail data not show parent data
iurijacob/yii2-enhanced-gii,osenyursa/yii2-enhanced-gii,gvasilopulos/yii2-enhanced-gii,mootensai/yii2-enhanced-gii,ulrica1994/yii2-enhanced-gii,mootensai/yii2-gii-lead