<?php
class User extend Model{
public function role() {
return $this->belongsToMany(Role::class,'user_role','role_id','user_id');
}
}
?>
$role_Id=[1,2,3]; //角色id
$user = User::find(1); //当前用户
$res = $user->role()->sync($role_Id); //更新写入user_role表
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