Yii2多对多订单项

问题描述

我有2个与联结表（sliders_images）相关的表（滑块，图像），该关系工作正常，但我想获得具有特定顺序的相关数据，定义正确顺序的属性在联结表中，关系定义为：

I've 2 tables (sliders, images) related with junction (sliders_images) table, the relation work fine but I nedd to get related data with specific order, the attribute that define the right order is in the junction table, the relation is defined as:

public function getImages(){
    return $this->hasMany(Images::className(), ['id' => 'image_id'])
        ->viaTable('sliders_images', ['slider_id' => 'id'], function($query){
            $query->orderBy('sliders_images.display_order ASC');
        });
}

当我调用 $ model-> images 我收到正确的图像，但顺序错误，使用foreach图像按ID排序，如何获取按其他属性排序的图像？

when i call $model->images I receive the correct images but the wrong order, using foreach the images was ordered by id, how i can get the images ordered by other attribute?

推荐答案

正确的方法是添加带有联接表-> joinWith（'slidersImages'）的联接以获取联接表属性然后按其中之一排序。完整代码：

The right way is to add a join with junction table ->joinWith('slidersImages') for get the junction table attributes and then order by one of those. The full code:

public function getImages(){
        return $this->hasMany(Images::className(), ['id' => 'image_id'])
        ->via('slidersImages')
        ->joinWith('slidersImages SI')
        ->orderBy('SI.display_order ASC');
}

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