选择数据，在数据透视表中不重复

问题描述

我有2个表和1个数据透视表，将它们用作历史记录"表，"dateChange"列指示该员工所在的商店，因为我使用的是 Orderby('dateChange'，'DESC').一切正常，但是如何在控制器中过滤结果?没有REPEAT记录?我需要显示属于一个唯一商店的所有员工.我再次重复:我使用'dateChange'因为我知道最后一家商店.请帮助我.谢谢

I have 2 table and 1 pivot table wich I use as table Historical, the column 'dateChange' indicated the store where is the employee, because i use Orderby ('dateChange','DESC'). All is ok, however how can I FILTER the results in my controller? without REPEAT records?.I need to show all the employees that belong to a unique store. I repeat again: I use 'dateChange' for i know the last store. help me, please. Thanks

数据透视表(员工商店)

Pivot Table (employee_store)

• FK_idStore
• FK_idEmployee
• dateChange

表员工

• idEmployee
• 名称

表存储

• idStore
• nameStore
• 方向

型号

public function employee(){
   return $this->belongsToMany(employee::class,'employee_store', 'fk_idStore','fk_idEmployee')
  ->withPivot('dateChange')->orderBy('dateChange','DESC');

控制器

$store= Store::findOrFail($id)->employee
return $store

推荐答案

要获取每个商店中每个员工的最新记录，请使用:

To get the last record of each employee in each store, use:

public function employee(){
    return Employe_Store::all()->groupBy('fk_idEmployee')->max('dateChange');
}

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