php - Cannot update textfield based on dropdown list Yii -


i have 3 dependent dropdowns, , textfield being dependent last dropdown. if 1 of value in last dropdown, want textfield value dynamically changes based on selected value (it's same database table).

this view of third dropdown:

 <div class="row" id="id_subkeg">        <?php echo $form->labelex($model, 'id_subkeg'); ?>                            <?php             echo $form->dropdownlist($model, 'id_subkeg', array(), array(                 'style' => 'width: 100%',                     'ajax' => array(                         'type' => 'post',                         'url' => ccontroller::createurl('dynamicsatuan'),                         'update' => '#' . chtml::activeid($model, 'satuan'),                         //'update'=>'#seksi',                         'data' => array('id_subkeg' => 'js:this.value'),                     )                 )             );        ?>        <?php echo $form->error($model, 'id_subkeg'); ?>                        </div>

this textfield view:

<div class="row" id="satuan">       <?php echo $form->labelex($model, 'satuan'); ?>       <p class="hint" style="font-size: 80%">contoh: dokumen.</p>       <?php echo $form->textfield($model, 'satuan', array('style' => 'width: 98%;', 'readonly' => false)); ?>       <?php echo $form->error($model, 'satuan'); ?> </div>

and action in controller:

public function actiondynamicsatuan() {         //$data = subkegiatan::model()->findbypk($_post['id_subkeg']);                 $data = subkegiatan::model()->findbypk('id_subkeg=:id_subkeg', array(':id_subkeg' => (int) $_post['id_subkeg']));                 echo $data->satuan;     }

but it's not been working days. don't know part i've missed. guess dropdown dependent dropdown 1 above it. must have missed @ part.

any highly appreciated.

update: after days of searching, got it:

 public function actiondynamicsatuan() {         $param_country = (int) $_post['id_subkeg'];         $maxordernumber = yii::app()->db->createcommand()                 ->select('satuan')                 ->from('subkegiatan')                 ->where('id_subkeg = ' . $param_country)                 ->queryscalar();         echo '<b>satuan: '. $maxordernumber.'</b>';         //echo chtml::tag('input', array('type' => 'text', 'value' => $maxordernumber));     }

instead of update, use success callback:

echo $form->dropdownlist($model, 'id_subkeg', array(), array(                 'style' => 'width: 100%',                     'ajax' => array(                         'type' => 'post',                         'url' => ccontroller::createurl('dynamicsatuan'),                         'data' => array('id_subkeg' => 'js:this.value'),                         'success'=> 'function(data) {                                         $("#your_id_here").empty();                                         $("#your_id_here").append(data);                                     }'                     )                 )             );

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