Useful Links
Yii - 2021
Bijlagen, Notes en Voorbeelden
Useful Links
Useful extensions
https://wbraganca.com/yii2extensions
Sorting/filtering in model met relaties
https://www.yiiframework.com/wiki/653/displaying-sorting-and-filtering-model-relations-on-a-gridview
Bootstrap (4) Icons
https://www.w3schools.com...
