假设我有一个用户、角色和透视表。我已经为角色和用户设置了属性。
用户模型:
<?php
namespace App;
...
use App\Models\Role;
class User extends Authenticatable
{
...
public function roles()
{
return $this->belongsToMany(Role::class, "UserRoles", "userId", "roleId")
->withPivot("read", "write", "update", "delete")
->withTimestamps();
}
}
榜样:
<?php
namespace App\Models;
...
use App\User;
class Role extends Model
{
...
public function users()
{
return $this->belongsToMany(User::class, "UserRoles", "roleId", "userId")
->withPivot("read", "write", "update", "delete")
->withTimestamps();
}
}
表“用户”:
userId username
1 admin
2 johndoe
3 menghour
表“角色”:
roleId roleName
1 Admin
2 HR
3 Account
透视表“用户角色”:
id userId roleId read write update delete
1 1 1 1 1 1 1
2 1 2 1 1 1 1
3 1 3 1 1 1 1
4 2 2 1 0 0 0
5 3 3 1 1 1 0
我的问题是如何在透视表中获取过滤器。
例如:我想只过滤userId
或角色ID
或userId和角色ID
如果我在blade template中选择了user=admin
,我希望获得用户拥有的所有角色。预期结果:
username roleName
admin Admin
admin HR
admin Account
如果我在blade template中选择选项role=HR
,我希望获取该角色拥有的所有用户。预期结果:
username roleName
admin HR
johndoe HR
如果我选择选项user=admin
和role=HR
,我只想获得特定的用户和角色。预期结果:
username roleName
admin HR
我累了:
User::whereHas("roles", function ($query) use ($request) {
if ($request->userId) {
$query->where("userRoles.userId", "=", $request->userId);
}
if ($request->roleId) {
$query->where("userRoles.roleId", "=", $request->roleId);
}
})->get();
注意:我使用Laravel 5.7
您可以根据示例尝试此查询以筛选数据。
函数whereHas
用于检索具有给定角色的所有用户。要获得用户角色,您必须将与
函数一起使用。
$user = User::whereHas('roles', function ($query) use ($request) {
if ($request->roleId) {
$query->where("userRoles.roleId", "=", $request->roleId);
}
})
// It will give you the user's role data.
->with('roles');
// It will check in users table if you have applied the filter by user.
if ($request->userId) {
$user = $user->where("users.id", "=", $request->userId);
}
$user = $user->get();
您还可以根据示例尝试此查询以筛选数据。此查询将为您提供在角色对象中指定的具有特定角色的用户。例如:如果在刀片模板中选择选项role=HR。
$user = User::whereHas('roles', function ($query) use ($request) {
if ($request->roleId) {
$query->where("userRoles.roleId", "=", $request->roleId);
}
})
// It will give you the user data with a particular given role which you has passed in the request.
->with(['roles' => function($query) use($request) {
if ($request->roleId) {
$query->where("roles.id", "=", $request->roleId);
}
}]);
// It will check in users table if you have applied the filter by user.
if ($request->userId) {
$user = $user->where("users.id", "=", $request->userId);
}
$user = $user->get();
您可以尝试wherePivot()
或wherePivotIn()
方法:
User::roles()->wherePivot('roleId',$request->roleId)
->wherePivot('userId',$request->userId)
->get()
https://laravel.com/docs/5.7/eloquent-relationships#many-to-many