Question

我是yii的新手。我有一个依赖的下拉列表，我的问题是在有人正在编辑的依赖下拉列表中，而不是自动选择编辑下拉列表。这是我的表单代码：

SELECT DISTINCT *,
   SUM(Budget) OVER(PARTITION BY AcctName) AS Budget
FROM (
   SELECT
      RIGHT(AcctName, CHARINDEX(' ', REVERSE(AcctName))) AS AcctName,
      Budget
   FROM Your_Table) AS A

这是我的控制器动作

  <div class="row">

  <?php 
Yii::app()->clientScript->registerScript('courseDropdown','jQuery(function($) {
            $("#Subject_Subjectid").trigger("change"); 
            $("#Subjectcourse_CourseId").val(\''.$model->CourseId.'\');
    });
');//write this code on _form.php file
?>

            <?php echo $form->labelEx($model,'Subjectid'); ?>       
            <?php 

             $sub = CHtml::listData(Subject::model()->findAll(array("condition"=>"School_Id='$School' and Status=1")),'Subjectid','SubjectName');

             echo CHtml::activeDropDownList($model,'Subjectid',CHtml::listData(Subject::model()->findAll(array("condition"=>"School_Id='$School' and Status=1")),'Subjectid','SubjectName'),
             array(
             'empty'=>'--Select a Subject--',
             'ajax' => array(
             'type'=>'POST', //request type
             'url'=>CController::createUrl('Timetable/subjectid'), //url to call.
             'data'=>array('Subjectid'=>'js: $(this).val()'),         
             'update'=>'#CourseId', //selector to update       
             )));
            echo $form->error($model,'Subjectid');

             echo $form->labelEx($model,'CourseId');
             echo CHtml::dropDownList('CourseId','', array(), array('empty' => '-- Select a Course --'));
             echo $form->error($model,'CourseId');

     ?>
    </div>

这是我的行动更新

public function actionSubjectid()
    {               
        $SchoolId=Yii::app()->session['Schoolid'];
        $subjectid=$_POST['Subjectid'];
        $subject = Subject::model()->findByPk($subjectid);      
        $data = Subjectcourse::model()->findAll(array("order"=>"CourseName ASC", "select"=>"CourseId,CourseName","condition" => "SubjectId='$subjectid' AND Status=1 AND School_Id='$SchoolId'"));
        $data=array('empty'=>'-- Select a Course --') +CHtml::listData($data,'CourseId','CourseName');      
        foreach($data as $value=>$name)
        {
            echo CHtml::tag('option', array('value'=>$value),CHtml::encode($name),true);
        }
    }

Answer 1

由于您的第二个下拉菜单仅在第一个下拉菜单中发生change事件时才有效，您可以在页面加载时触发此事件，如下所示：

<?php 
Yii::app()->clientScript->registerScript('courseDropdown','jQuery(function($) {
            $("#Subject_Subjectid").trigger("change"); 
            $("#Subjectcourse_CourseId").val(\''.$model->CourseId.'\');
    });
');//write this code on _form.php file
?>

修改或者，您可以通过查询第一个下拉列表中的数据来填充第二个下拉列表：

if(!$model->isNewRecord) {
    $courseArr = Chtml::listData(Subjectcourse::model()->findAllByAttributes(array('SubjectId'=>$model->Subjectid)), 'CourseId','CourseName'); //your query, modify according to need
} else {
    $courseArr = array();
}

echo $form->labelEx($model,'CourseId');
echo CHtml::dropDownList('CourseId','', $courseArr, array('empty' => '-- Select a Course --'));
echo $form->error($model,'CourseId');

更新时，从属下拉列表未显示选定的值

1 个答案: