GridView Widget

Change title of a column name.

For this, change the model, example:

public function attributeLabels() {
	return [
		'id' => 'ID',
		'naam' => 'examennaam',
		'datum_van' => 'van',
		'datum_tot' => 'tot',
		'actief' => 'actief',
	];
}

The database column 'datum_van' will be showed as 'van'.

ActionColumn show a view conditional

[
    'class' => 'yii\grid\ActionColumn',
    'contentOptions' => ['style' => 'width:400px; white-space: normal;'],
    'header'=>'Actions',
    'template' => '{view} {update} {delete}',
    'visibleButtons'=>[
        'view'=> function($model){
              return $model->status!=1;
         },
    ]
],

ActionColumn add own function/controller (copy)

[
    'class' => 'yii\grid\ActionColumn',
    'template' => '{download} {view} {update} {delete}',
    'buttons' => [
        'download' => function ($url) {
            return Html::a(
                '<span class="glyphicon glyphicon-arrow-down"></span>',
              	['another-controller/anotner-action', 'id' => $model->id],   // mag ook alleen url als je geen parameter wilt meegeven, dan hoef je geen array te maken.
                [
                    'title' => 'Download',
                    'data-pjax' => '0',
                ]
            );
        },
    ],
],

// Alternatief, copy button, niet vergeten in template te te zetten
    'buttons'=>[
         'copy' => function ($url, $model, $key) {
             return Html::a('<span class="glyphicon glyphicon-copy"></span>', ['copy', 'id'=>$model->id],['title'=>'Copy']);
         },
    ],

Column Show Boolean as symbol

 [
   'attribute'=>'actief',
   'contentOptions' => ['style' => 'width:10px; white-space: normal;'],
   'format' => 'raw',
       'value' => function ($data) {
            $status = $data->actief ? '<span class="glyphicon glyphicon-ok"></span>' : '<span class="glyphicon glyphicon-minus"></span>';
            return Html::a($status, '/rolspeler/toggle-actief?id='.$data->id);
        }
 ],

Drop down in grid select

https://stackoverflow.com/questions/29231013/how-can-i-use-a-simple-dropdown-list-in-the-search-box-of-gridviewwidget-yii2

[
    'attribute'=>'attribute name',
    'filter'=>array("ID1"=>"Name1","ID2"=>"Name2"),
],

// of

[
    'attribute'=>'attribute name',
    'filter'=>ArrayHelper::map(Model::find()->asArray()->all(), 'ID', 'Name'),
],

// of

[
    'attribute' => 'attribute_name',
    'value' => 'attribute_value',
    'filter' => Html::activeDropDownList(
      				$searchModel,
      				'attribute_name',
                    ArrayHelper::map(ModelName::find()->asArray()->all(), 'ID', 'Name'),
                    ['class'=>'form-control','prompt' => 'Select Category']
                ),
],

Drop down in grid select

https://stackoverflow.com/questions/29231013/how-can-i-use-a-simple-dropdown-list-in-the-search-box-of-gridviewwidget-yii2