我有3张桌子:
Ad_users
广告组
Ad_usersxad_groups
Ad_usersxad_groups是其他两个的联接表。现在,我正在做一个流明/ Laravel项目,我们正在使用雄辩的模型。我的ad_users表和ad_groups表具有以下模型:
ad_user.php
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Ad_user extends Model
{
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = [
'common_name',
'location',
'description',
'postalcode',
'physical_delivery_office_name',
'telephone_number',
'initials',
'street_address'
];
/**
* Hides pivot in return queries.
*
* @var array
*/
protected $hidden = [
'pivot'
];
/**
* Many-To-Many relationship.
*/
public function ad_groups()
{
return $this->belongsToMany('App\Ad_group', 'Ad_usersxad_groups');
}
}
ad_group.php
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Ad_group extends Model
{
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = [
'name'
];
/**
* Hides pivot from return queries.
*
* @var array
*/
protected $hidden = [
'pivot'
];
/**
* Many-To-Many relationshipl.
*/
public function ad_users()
{
return $this->belongsToMany('App\Ad_user', 'Ad_usersxad_groups');
}
public function extensiontables()
{
return $this->belongsToMany('App\extensiontables_registry', 'extensiontables_registryxad_groups');
}
}
ad_groups和ad_user内部的数据基本上来自我们公司的LDAP服务器。因此,当用户登录时,中间件会建立与ldap的连接并检索用户数据。然后,数据将同步到我们的本地数据库,这意味着它已更新或已创建。仅出于完整性考虑,以下是用户访问登录路径时正在执行的代码:
AuthController.php
public function login(Request $request)
{
$ldap = new LDAP;
$jwt = new JWTAuth;
$response = new Response;
$this->validate($request, [
'username' => 'string|required',
'password' => 'string|required'
]);
if(!$ldap->authenticateUser($request->username, $request->password))
{
return response()->json([
'error' => 'User could not be authenticated'
], 401);
}
/**
* Synchronizes the user's data from ldap with the local db.
* Used for better performance and mitigating network overhead.
*/
$ldap->syncData($request->username);
$response->header('Authorization', 'Bearer '.$jwt->generateJWT($request->username));
return $response;
}
[这里,重要的部分是$ldap->syncData($request->username);
。它调用执行此代码的LDAP.php:
LDAP.php
public function syncData($username)
{
try
{
if(!$this->connect())
{
$this->disconnect();
return false;
}
$userData = $this->getUser($username, [
'cn',
'l',
'description',
'postalcode',
'physicaldeliveryofficename',
'telephonenumber',
'initials',
'memberof',
'streetaddress'
]);
$user = Ad_user::updateOrCreate(
['common_name' => $userData['cn']],
[
'common_name' => $userData['cn'],
'location' => $userData['l'],
'description' => $userData['description'],
'postalcode' => $userData['postalcode'],
'physical_delivery_office_name' => $userData['physicaldeliveryofficename'],
'telephone_number' => $userData['telephonenumber'],
'initials' => $userData['initials'],
'street_address' => $userData['streetaddress']
]
);
// Remove everything but the user roles
foreach($userData['memberof'] as $key=>$role)
{
preg_match("/^CN=.+?,/", $role, $role);
$userData['memberof'][$key] = substr($role[0], 3, -1);
}
// Loop through every role because updateOrCreate cant handle arrays
foreach($userData['memberof'] as $value)
{
$roles[] = Ad_group::updateOrCreate(
['name' => $value],
['name' => $value]
)->id;
}
// Syncs current roles received from ldap with the local db
$user->ad_groups()->sync($roles);
}
catch(\Exception $e)
{
$error = array("exception_code" => $e->getCode(), "error_message" => $e->getMessage());
Log::error($error);
return false;
}
finally
{
$this->disconnect();
}
}
我发现,每当用户登录系统时,记录就会插入到联结表中。每次,这意味着将创建大量冗余数据。我猜导致该问题的代码的重要部分是:
$user->ad_groups()->sync($roles)
例如,同一用户登录7次后,联结表如下所示:
select * from ad_usersxad_groups;
+------------+-------------+------------+------------+
| Ad_user_id | Ad_group_id | created_at | updated_at |
+------------+-------------+------------+------------+
| 1 | 1 | NULL | NULL |
| 1 | 2 | NULL | NULL |
| 1 | 3 | NULL | NULL |
| 1 | 4 | NULL | NULL |
| 1 | 5 | NULL | NULL |
| 1 | 6 | NULL | NULL |
| 1 | 7 | NULL | NULL |
| 1 | 8 | NULL | NULL |
| 1 | 9 | NULL | NULL |
| 1 | 10 | NULL | NULL |
| 1 | 11 | NULL | NULL |
| 1 | 12 | NULL | NULL |
| 1 | 1 | NULL | NULL |
| 1 | 2 | NULL | NULL |
| 1 | 3 | NULL | NULL |
| 1 | 4 | NULL | NULL |
| 1 | 5 | NULL | NULL |
| 1 | 6 | NULL | NULL |
| 1 | 7 | NULL | NULL |
| 1 | 8 | NULL | NULL |
| 1 | 9 | NULL | NULL |
| 1 | 10 | NULL | NULL |
| 1 | 11 | NULL | NULL |
| 1 | 12 | NULL | NULL |
| 1 | 1 | NULL | NULL |
| 1 | 2 | NULL | NULL |
| 1 | 3 | NULL | NULL |
| 1 | 4 | NULL | NULL |
| 1 | 5 | NULL | NULL |
| 1 | 6 | NULL | NULL |
| 1 | 7 | NULL | NULL |
| 1 | 8 | NULL | NULL |
| 1 | 9 | NULL | NULL |
| 1 | 10 | NULL | NULL |
| 1 | 11 | NULL | NULL |
| 1 | 12 | NULL | NULL |
| 1 | 1 | NULL | NULL |
| 1 | 2 | NULL | NULL |
| 1 | 3 | NULL | NULL |
| 1 | 4 | NULL | NULL |
| 1 | 5 | NULL | NULL |
| 1 | 6 | NULL | NULL |
| 1 | 7 | NULL | NULL |
| 1 | 8 | NULL | NULL |
| 1 | 9 | NULL | NULL |
| 1 | 10 | NULL | NULL |
| 1 | 11 | NULL | NULL |
| 1 | 12 | NULL | NULL |
| 1 | 1 | NULL | NULL |
| 1 | 2 | NULL | NULL |
| 1 | 3 | NULL | NULL |
| 1 | 4 | NULL | NULL |
| 1 | 5 | NULL | NULL |
| 1 | 6 | NULL | NULL |
| 1 | 7 | NULL | NULL |
| 1 | 8 | NULL | NULL |
| 1 | 9 | NULL | NULL |
| 1 | 10 | NULL | NULL |
| 1 | 11 | NULL | NULL |
| 1 | 12 | NULL | NULL |
| 1 | 1 | NULL | NULL |
| 1 | 2 | NULL | NULL |
| 1 | 3 | NULL | NULL |
| 1 | 4 | NULL | NULL |
| 1 | 5 | NULL | NULL |
| 1 | 6 | NULL | NULL |
| 1 | 7 | NULL | NULL |
| 1 | 8 | NULL | NULL |
| 1 | 9 | NULL | NULL |
| 1 | 10 | NULL | NULL |
| 1 | 11 | NULL | NULL |
| 1 | 12 | NULL | NULL |
| 1 | 1 | NULL | NULL |
| 1 | 2 | NULL | NULL |
| 1 | 3 | NULL | NULL |
| 1 | 4 | NULL | NULL |
| 1 | 5 | NULL | NULL |
| 1 | 6 | NULL | NULL |
| 1 | 7 | NULL | NULL |
| 1 | 8 | NULL | NULL |
| 1 | 9 | NULL | NULL |
| 1 | 10 | NULL | NULL |
| 1 | 11 | NULL | NULL |
| 1 | 12 | NULL | NULL |
+------------+-------------+------------+------------+
这既不是理想的也不是可以接受的,但是由于我对lumen / laravel以及此处使用的php LDAP API还是很陌生,所以我几乎不知道是什么原因会导致这种行为。噢,至少我很确定MySQL / MariaDB不会影响此行为,因为FOREIGN KEY没有附加CASCADE。
我想知道我在模型定义中是否做错了什么,但是我不知道什么是xD您的一些帮助将不胜感激^^
编辑:日志显示了角色数组:
[2020-01-31 08:57:27] local.INFO: array (
0 => 1,
1 => 2,
2 => 3,
3 => 4,
4 => 5,
5 => 6,
6 => 7,
7 => 8,
8 => 9,
9 => 10,
10 => 11,
11 => 12,
)
根据我的发现,我猜这是造成您的问题的原因:
$roles[] = Ad_group::updateOrCreate(
['name' => $value],
['name' => $value]
)->id;
应该是:
$roles[] = Ad_group::updateOrCreate(
['name' => $value]
)->id;
您两次使用相同的名称,但是只会创建一个组(然后更新)。但是结果将附加到$roles
数组,从而导致在同步时附加两个相同的组。