how to keep selected value on Yii2 html::dropddownlist?

Question

i have the following code in my view:

<?=Html::dropdownList('region',null,
ArrayHelper::map(Ethioregion::find()->all(),'region','region'),[
        'prompt' => 'Select Region..','style'=>'width:200px',]) ?>

and submit button

 <?= Html::submitButton('Search', ['name' => 'dele','class' => 'btn btn-primary']) ?>

my code working well but I have one big problem. I select a region and click the search button, the result comes correctly, and 10 result is shown per page when I click the next page, it gives me false data, I notice this is due to the selected value on the dropdownlist is reset. I tried both making " Selected'=> true, and 'Selected'=>'selected', but it does not work. so how can I make the selected value on dropdownlist and checkboxlist will be selected after the page is loading? thanks

you can use the `activeDropdownList` or use `ActiveForm` instead — Muhammad Omer Aslam, Dec 22 '18 at 22:04
i want to display dropdown values form a table without using models, so can you show me how can use using activedropdownlist or activeform? thanks — girmay, Dec 23 '18 at 10:48
do mark the answer as correct if it worked so others having the same issue also benefit. — Muhammad Omer Aslam, Dec 31 '18 at 12:10

score 1 · Accepted Answer · edited Dec 23 '18 at 13:37

1

It is very simple, you must pass integer $region_id only:

<?=Html::dropdownList('region', $region_id,
ArrayHelper::map(Ethioregion::find()->all(),'region','region'),[
        'prompt' => 'Select Region..','style'=>'width:200px',]) ?>

edited Dec 23 '18 at 13:37

Thomas Fritsch

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answered Dec 23 '18 at 12:48

i tried to give the primary key of the ethioregion table that is id, i modified my code like this =Html::DropDownList('region','id', ArrayHelper::map(Ethioregion::find()->all(),'id','region'),['Selected'=>'selected', 'prompt' => 'Select Region..','style'=>'width:200px',]) ?> and i tried 'Selected'=>true, but still not working, when the button is clicked i just want to keep the selected value untill i select other, how can i show this using activedropdownlist, or using this dropdownlist code? thanks for ur help – girmay Dec 24 '18 at 04:48

how to keep selected value on Yii2 html::dropddownlist?

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