yii2表关联
1.两张表关联,以“商品表关联品牌表”为例
控制器中:
$goods_model=new Goods();
$goods_info=$goods_model::find()->joinWith('brand')->all();
商品模型中:
//关联品牌表
public function getbrand(){
return $this->hasMany(Brand::className(), ['brand_id' => 'goods_brand_id']);
}
2.三张表关联,以“商品表关联品牌表和分类表”为例
控制器中:
$goods_model=new Goods();
$goods_info=$goods_model::find()->joinWith('brand','category')->orderBy('goods.goods_id desc');
商品模型中:
//关联品牌表
public function getbrand(){
return $this->hasMany(Brand::className(),['brand_id'=>'goods_brand_id']);
}
//关联类别表
public function getcategory(){
return $this->hasMany(Category::className(),['category_id'=>'goods_category_id']);
}