在Yii2中排序计算字段(网格视图)

Question

我需要在GridView中对某些字段(asc,desc)进行排序,但计算相同的字段.看下面的代码: SearchModel:

class ObjectSearch extends Object {
use SearchModelTrait;

public function rules()
{
    return [
        ['id', 'integer', 'min' => 1],
    ];
}

public function search($params)
{
    $this->company_id = \Yii::$app->user->identity->companyId;
    $query = Object::find()->where(['company_id' => $this->company_id]);
    $dataProvider = new ActiveDataProvider([
        'query' => $query,
        'pagination' => false,
    ]);
    $dataProvider->setSort([
        'attributes' => [
            'id',
            'name',
            'lastReportResult' => [
                'asc' => ['lastReportResult' =>SORT_ASC ],
                'desc' => ['lastReportResult' => SORT_DESC],
                'default' => SORT_ASC
            ],
            'reportPercentDiff'
        ]
    ]);

    if (!($this->load($params,'ObjectSearch') && $this->validate())) {
        return $dataProvider;
    }

    $this->addCondition($query, 'id');

    return $dataProvider;
}

对象模型中的方法:

public function getLastReportResult()
{
    $lastReport = $this->getLastReport();
    $message = 0;

    if (!empty($lastReport)) {
        $statistic = new ReportStatistic($lastReport);
        $message = $statistic->getPercent();
    }

    return $message;
}

/**
 * @return int
 */
public function getReportPercentDiff()
{
    $lastReport = $this->getLastReport();
    $message = 0;

    if (!empty($lastReport)) {
        $statistic = $lastReport->getReportDiff();

        if (!empty($statistic['diff'])) {
            $message = $statistic['diff']['right_answers_percent_diff'];
        } elseif (!empty($statistic['message'])) {
            $message = $statistic['message'];
        }
    }
    return $message;
}

所以,通过这种方法,我正在计算两个字段的值,这是需要的排序.这种方式不起作用,我有一个数据库异常,因为对象表没有这个字段.exception 如何对这些字段进行排序？

Answer 1

更新：我是这个答案的作者，这个答案不准确。首选方法是使用数据库视图

添加两个公共属性并将ObjectSearch.php其标记为安全

class ObjectSearch extends Object {
    use SearchModelTrait;
    public $lastReportResult, $reportPercentDiff;
    public function rules()
    {
        return [
            ['id', 'integer', 'min' => 1],
            [['lastReportResult', 'reportPercentDiff'], 'safe']
        ];
    }

    public function search($params)
    {
        $this->company_id = \Yii::$app->user->identity->companyId;
        $query = Object::find()->where(['company_id' => $this->company_id]);
        $dataProvider = new ActiveDataProvider([
            'query' => $query,
            'pagination' => false,
        ]);
        $dataProvider->setSort([
            'attributes' => [
                'id',
                'name',
                'lastReportResult' => [
                    'asc' => ['lastReportResult' =>SORT_ASC ],
                    'desc' => ['lastReportResult' => SORT_DESC],
                    'default' => SORT_ASC
                ],
                'reportPercentDiff' => [
                    'asc' => ['reportPercentDiff' =>SORT_ASC ],
                    'desc' => ['reportPercentDiff' => SORT_DESC],
                    'default' => SORT_ASC
                ],                
            ]
        ]);

        if (!($this->load($params,'ObjectSearch') && $this->validate())) {
            return $dataProvider;
        }

        $this->addCondition($query, 'id');

        return $dataProvider;
}

然后在index.php（具有网格视图的视图文件）中添加lastReportResult并reportPercentDiff在所有属性的数组中（所有属性obObject模型的列表）

...
<?= GridView::widget([
    'dataProvider' => $dataProvider,
    'filterModel' => $searchModel,
    'columns' => [
        ['class' => 'yii\grid\SerialColumn'],

        
        // your other attribute here
        'lastReportResult',
        'reportPercentDiff',

        ['class' => 'yii\grid\ActionColumn'],
    ],
]); ?>
...

欲了解更多信息，您可以访问Kartik 的 Yii 博客