添加hasMany关系查询laravel？答案

【问题标题】：add hasMany relationship query laravel?添加hasMany关系查询laravel？
【发布时间】：2022-01-15 15:44:14
【问题描述】：

我怎么有很多关系，获取最后 5 个用户，我尝试使用模型和女巫 hasMany 关系显示为空。我已经做了很多测试，每次查询获取最后5个用户时，关系总是有问题

查询：

   $minute = Minute_Report::Query()->whereBetween('minutos.fecha', [$from, $to])
                ->join('clients', 'minutos.cliente', '=', 'clients.id')
                ->join('users as asesor', 'minutos.psiquico', '=', 'asesor.id')
                ->select(
                    'minutos.id',
                    'clients.code',
                    'clients.id as client',
                    \DB::raw("CONCAT(clients.firstname_c,clients.lastname_c) As client_full_name"),
                    \DB::raw("CONCAT(asesor.first_name,asesor.last_name) As asesor_full_name"),
                    'minutos.date2 As fechas',
                    'minutos.minutos',
                    \DB::raw('(CASE 
                WHEN minutos.motive = "MINUTOS GRATIS" THEN "GRATIS" 
                ELSE "PAGO" 
                END) AS status_lable'),
                    'minutos.motive',
                    'minutos.time_a',
    
                );
    
            $data = $minute->get();

结果：

[
asesor_full_name: "Lucero /Liliana Fuentes"
client: 2079
client_full_name: "NICOLE MSALLS OCACIO"
code: 2078
fechas: "2021-01-01 09:40:44"
id: 64208
minutos: 27
motive: "MINUTOS GRATIS"
status_lable: "GRATIS"
time_a: "40"
]

成功：

[
    asesor_full_name: "Lucero /Liliana Fuentes"
    client: 2079
    client_full_name: "NICOLE MSALLS OCACIO"
    code: 2078
    fechas: "2021-01-01 09:40:44"
    id: 64208
    minutos: 27
    motive: "MINUTOS GRATIS"
    status_lable: "GRATIS"
    time_a: "40"
    users[
        1,
        2,
        3,
        5
     ]
    ]

【问题讨论】：

标签： mysql laravel query-builder

【解决方案1】：

我不知道我是否做对了，但我会尽力提供帮助。

您是否在 Minute_Report 模型中定义了与 User 模型的关系？什么是关系列？应该是这样的

public function users()
{
    return $this->hasMany(User::class, 'xxx');
}

在您的 Minute_Report 模型上。 'xxx' 是指 users 表上的关系列名。

然后，您应该在查询中添加“with('users')”。像这样：

$minute = Minute_Report::Query()->whereBetween('minutos.fecha', [$from, $to])
                ->join('clients', 'minutos.cliente', '=', 'clients.id')
                ->join('users as asesor', 'minutos.psiquico', '=', 'asesor.id')
                ->select(
                    'minutos.id',
                    'clients.code',
                    'clients.id as client',
                    \DB::raw("CONCAT(clients.firstname_c,clients.lastname_c) As client_full_name"),
                    \DB::raw("CONCAT(asesor.first_name,asesor.last_name) As asesor_full_name"),
                    'minutos.date2 As fechas',
                    'minutos.minutos',
                    \DB::raw('(CASE 
                WHEN minutos.motive = "MINUTOS GRATIS" THEN "GRATIS" 
                ELSE "PAGO" 
                END) AS status_lable'),
                    'minutos.motive',
                    'minutos.time_a',

            )->with('users');

        $data = $minute->get();

【讨论】：

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