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Yii2 add class or function to list form field

I need to add class and function to dropdown in active Yii2 form, here is the code: 

<?= $form->field($model, 'tipocontratto')->dropDownList(['RES' => 'Residenziale', 'BUS' => 'Business'], ['prompt'=>'Seleziona...'],['maxlenght'=> true]); ?>

code> I need to specify a class for a field as well as a javascript function. In a normal textbox, I do like this: field($model, 'cogn_ragsoc')->textInput(['maxlength' => true,'class'=>'form-control formtesto','onfocus'=>'test()']) ?>

and it works fine, but in the dropdown it is not How can I do this?

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2 answers


This works great.



<?= $form->field($model, 'tipocontratto')->dropDownList(['RES' => 'Residenziale', 'BUS' => 'Business'], ['prompt'=>'Seleziona...','class'=>'yourclass','onchange'=>'function()']); ?>
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try adding parameters with a class like ::



<?= $form->field($model, 'tipocontratto')->dropDownList(['RES' => 'Residenziale', 'BUS' => 'Business'], 
['prompt'=>'Seleziona...'],['maxlenght'=> true], 
[options=> ['class' => 'yuorClass']]); ?>
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