Laravel : 多对多插入

Question

我有两个模型，User 和 Team 他们之间的关系是ManyToMany:

在User中：

public function teamMembers(){
    return $this->belongsToMany('App\Team')->withPivot('id');;
}

并且在 Team 中：

public function teamMembers(){
    return $this->belongsToMany('App\User')->withPivot('id');;
}

现在我想将用户添加到特定团队。所以枢轴 table 名称是 team_user。

现在我要插入数据透视表 table 的数据是：

array:4 [▼
  "_token" => "mlwoAgCQYals1N1s2lNa4U5OTgtMNHh9LUhNGrWh"
  "team_id" => "1"
  "members_id" => array:3 [▼
    0 => "2"
    1 => "3"
    2 => "4"
  ]
  "status" => "1"
]

我在我的控制器中做了什么：

$team_id = $request->get("team_id");
$team = \App\Team::findOrFail($team_id);
foreach ($request->get('members_id') as $key => $value) {
    $team->teamMembers()->attach($team);
    $team->save();
}

但它只插入一条记录，我指的是 team_id 和第一条 member_id。我希望它从 members_id 数组中为每个成员创建一条记录。我该怎么做？

Answer 1

您应该将一组用户 ID 传递给 attach() 方法。

For convenience, attach and detach also accept arrays of IDs as input

将您的代码更改为：

$team = \App\Team::findOrFail($request->team_id);
$team->teamMembers()->attach($request->members_id);

Laravel : 多对多插入

Laravel : Many to many insertion

php

laravel

loops

eloquent

laravel-5.4