Laravel配车型雄辩的关系查询

Question

在搜索表单之前修改的查询代码然后我用下面的查询，这完美地工作。

...
$query = Job::where('is_trash', 0);
$query = $query->where('created_at', '>=', Carbon::parse($rFrom)->startOfDay())
        ->where('created_at', '<=', Carbon::parse($rTo)->endOfDay())
        ->where('customer_name', 'like', '%' . $rName . '%')
        ->where('project_name', 'like', '%' . $rProject . '%')
        ->where('job_type', 'like', '%' . $rType . '%');
...

但现在我作如下修改表结构通过关系查询dynimically字段名显示。

工作表

  +----------------------------------------------------+
     ID | customer_id | job_project_id | job_type_id | ...                                         
  +----------------------------------------------------+
     1  | 1           | 1             | 1       | ...
  +----------------------------------------------------+
     2  | 2           | 7             | 2       | ...
  +----------------------------------------------------+

JobProject表

  +-------------------------------+
     ID | customer_id | name | ...                                         
  +-------------------------------+
     1  | 1           | 1    |...
  +-------------------------------+
     2  | 2           | 7    | ...
  +-------------------------------+

作业类型表

  +------------------+
     ID | name  | ...                                         
  +------------------+
     1  | test1 |...
  +------------------+
     2  | test2 | ...
  +------------------+

它也包括如下面工作模型的简单关系。这些东西定义为varchar类型为字符串。但工作模型中定义的不仅仅是这些模型在工作表中的customer_id，PROJECT_ID和jobType_id ID。

...

public function user()
{
    return $this->hasOne(User::class);
}

public function customer()
{
    return $this->hasOne(Customer::class);
}

public function jobProject()
{
    return $this->hasOne(JobProject::class);
}

public function jobType()
{
    return $this->hasOne(JobType::class);
}
...

主要问题是，如果搜索输入是CUSTOMER_NAME，PROJECT_NAME和工作类型，那么如何让查询关系查询链？由于工作表只包括这些ID。

Answer 1

<?php 

// Build primitive query
$jobQuery = Job::where('is_trash', 0);

// Use when conditional to check if you need to filter something
$jobQuery->when($from && $to, function($q) use($request) {
        $q->where('created_at', '>=', Carbon::parse($from)->startOfDay())
            ->where('created_at', '<=', Carbon::parse($to)->endOfDay());
    });
// Use whereHas to add a where clause in relations
$jobQuery->when($customerName, function($q) use($request) {
    $q->whereHas('customer', function ($subq) {
        $subq->where('name', 'like', '%' . $customerName . '%');
    });
});


$jobQuery->when($projectName, function($q) use($request) {
    $q->whereHas('jobproject', function ($subq) {
        $subq->where('name', 'like', '%' . $projectName . '%');
    });
});

$jobQuery->when($jobType, function($q) use($request) {
    $q->whereHas('jobtype', function ($subq) {
        $subq->where('name', 'like', '%' . $jobType . '%');
    });
});