在yii2中如何根据角色更改下拉数据？

Question

I have data in Drop down list as per role(for every role table are different). I don't have any idea how to do because I am not familiar with yii2 First select a role and after selecting role I want data from different different table as per role

<?= $form->field($model, 'role')->dropDownList( [ 'A' => 'Admin', 'M' => 'Member', 'P' => 'Practice', ],['prompt'=>'--Select a Role--',]);?>
<?= $form->field($model, 'code')->dropDownList(
                    ArrayHelper::map(Member::find()->all(), 'id', 'memberCode'),           
                            ['id'=>'memberCode']
                        );
                    ?>

Answer 1

You Need to update your 2nd dropdown when you select any value from dropdown 1st. Lets say 2nd drop down have id #dropdown2 so, i dit in yii you can change it according to yii2.

 echo $form->dropDownListGroup(
                    $model, 'id', array(
                'wrapperHtmlOptions' => array(),
                'widgetOptions' => array(
                    'data' => CSystemGenerated::getProjectName($model->c_id),
                    'htmlOptions' => array(
                        'prompt' => 'Select Project',
                        'ajax' => array(
                                'type' => 'POST',
                                'url' =>  your url,
                                'update' => '#dropdown2',
                                //'dataType' => 'json',
                                'data'=>array('id'=>'js:this.value'),

                              )
                            ),
                        ),
              )
            );   

 <?php
            echo $form->dropDownListGroup(
                    $model, 'tag', array(
                'wrapperHtmlOptions' => array(),
                'widgetOptions' => array(
                    'data' =>$this->getTags(),
                    'htmlOptions' => array(
                        'prompt' => 'Select Tags',
                    ),
                )
                    )
            );
        ?> 

check this link it will help you more.

Link1

link2

Answer 2

请参阅Yii2中的Kartik Dependent Drop Down ..这肯定会有所帮助