在Yii框架中,如何组合列并在下拉列表中显示为显示字符串

Question

我有一个dropDownList在我看来,它是由填充clients表,表中包含样柱first_name,last_name,id等等,现在我想展示first_name并last_name作为显示文本和id在下拉列表中的值,我有做id的价值和first_name作为显示文本,但在这里我想组合这些列(first_name和last_name)并用作显示文本.

在模型中

function getClients()
{
    $Clients = Client::model()->findAll();
    $list    = CHtml::listData($Clients , 'client_id', 'first_name');
    return $list;
}

在视野中

echo $form->dropDownList($model,'client_id',$model->getClients());

Answer 1

继承人另一种方法在模型中

function getFullName()
{
    return $this->first_name.' '.$this->last_name;
}

和

function getClients()
{
    $Clients = Client::model()->findAll();
    $list    = CHtml::listData($Clients , 'client_id', 'fullName');
    return $list;
}

我认为这是一种可重用的方法,因为您fullName不仅可以在下拉列表中使用虚拟属性,而且还需要使用全名.

Answer 2

第一个变种(简单):

$list = array();
foreach ($Clients as $c) {
    $list[$c->id] = $c->first_name . ' ' . $c->last_name;
}

第二个变种(通用):

class ExtHtml extends CHtml {
    public static function listData($models,$valueField,$textField,$groupField='')
    {
        $listData=array();
        if($groupField==='')
        {
            foreach($models as $model)
            {
                $value=self::value($model,$valueField);
                if (is_array($textField)) {
                    $t = array();
                    foreach ($textField as $field) {
                        $t[]=self::value($model,$field,$field);
                    }
                    $text=implode(' ', $t);
                } else {
                    $text=self::value($model,$textField, null);
                    if ($text == null) {
                        if (is_callable($textField)) $text=call_user_func($textField, $model);
                        else $text = $textField;
                    }
                }
                $listData[$value]=$text;
            }
        }
        else
        {
            foreach($models as $model)
            {
                $group=self::value($model,$groupField);
                $value=self::value($model,$valueField);
                if (is_array($textField)) {
                    $t = array();
                    foreach ($textField as $field) {
                        $t[]=self::value($model,$field,$field);
                    }
                    $text=implode(' ', $t);
                } else {
                    $text=self::value($model,$textField, null);
                    if ($text == null) {
                        if (is_callable($textField)) $text=call_user_func($textField, $model);
                        else $text = $textField;
                    }
                }
                $listData[$group][$value]=$text;
            }
        }
        return $listData;
    }
    public static function value($model,$attribute,$defaultValue=null)
    {
        foreach(explode('.',$attribute) as $name)
        {
            if(is_object($model) && ($model->hasAttribute($name) || isset($model->{$name})))
                $model=$model->$name;
            else if(is_array($model) && isset($model[$name]))
                $model=$model[$name];
            else
                return $defaultValue;
        }
        return $model;
    }
}

// in model

function getClients()
{
    $Clients = Client::model()->findAll();
    $list    = ExtHtml::listData($Clients , 'client_id', array('first_name', 'last_name'));
    return $list;
}

第3个变种(Mysql)

function getClients()
{
    $Clients = Client::model()->findAll(array('select' => 'concat(first_name, " ", last_name) as first_name'));
    $list    = CHtml::listData($Clients , 'client_id', 'first_name');
    return $list;
}