如何在数组助手映射 yii2 中按子数据分组

Question

我有两张桌子

投资

 id_investment
 id_investment_type
 name

投资类型

 investment_type
 id_investment_type
 name

我使用函数

得到一个数组

ArrayHelper::map(Investment::find()->where(['id_investment_type'=>[1,2,3]])->all,'id_investment','name','id_investment_type');

这个return

1
  investmentOneOfTypeOne
  investmentTwoOfTypeOne
2
  investmentOneOfTypeTwo
  investmentTwoOfTypeTwo

我想用 investment_type

的名称更改 groupby 的 id_investment_type

例子

Build
 Mounting Office
 investmenTwo
 ...
Devices
 invetmentOne
 BuyLaptop
 ...

我试过如下

ArrayHelper::map(Investment::find()->where(['id_investment_type'=>[1,2,3]])->all,'id_investment','name','id_investment_type.name');

但不起作用。

请有人知道是否可以这样做。

谢谢！

Answer 1

您的投资中必须有model这个方法：

/*
* return ActiveQuery
* id represent the investment type id column
* id_investment_type represent Investment table column which does have a value from 
* Investment Type table
*/
public function getInvestmentType()
    {
        return $this->hasOne(InvestmentType::className(), ['id' => 'id_investment_type']);
    }

然后你可以像这样构建你的地图：

ArrayHelper::map(Investment::find()
    ->with(['investmentType'])
    ->where(['id_investment_type'=>[1,2,3]])
    ->all(),'id_investment','investment_type.name');

这将 return 结果：

1   Mounting Office
2   InvestmenTwo

如何在数组助手映射 yii2 中按子数据分组

How to group by sub data in array helper map yii2

php

yii2