Design the database structure and generate migrations from the designed model

The preferred way to install this extension is through composer.

Either run

php composer.phar require-dev --prefer-dist blumster/yii2-gii-migration-designer "*"

or add

"blumster/yii2-gii-migration-designer": "*"

to the require-dev section of your composer.json file.

Usage: After install, you can find it in the gii module