[英]How to apply filter with relational table using with statement
我写了一个代码来过滤关系数据,但我没有得到好的结果。 这是代码。 父查询和带查询是独立工作的。
public function get(Request $request, Company $company, Survey $survey)
{
$this->authorize('update', $survey->company);
$search = $request->get('search');
$query = EsAnswer::where(['company_id' => $company->id, 'survey_id' => $survey->id])
->orderByDesc('created_at')
->with(['employee'=> function ($q) use($search) {
$q->where('first_name', 'LIKE', "%{$search}%");
$q->orwhere('last_name', 'LIKE', "%{$search}%");
$q->select('id', 'first_name', 'last_name');
}]);
if ($request->has('start_date')) {
$query->whereDate('created_at', '>=', $request->start_date);
}
if ($request->has('end_date')) {
$query->whereDate('created_at', '<=', $request->end_date);
}
$answers = $query->get()->groupBy('submission_id');
// ->paginate('100');
return $answers;
}
当我用这个
{
"search":""
}
我得到这个回应:
{
"id": 2,
"company_id": 1,
"employee_id": 1,
"survey_id": 2,
"es_question_id": 1,
"answer": "done",
"submission_id": "1",
"mark_as_read": 1,
"created_at": "2020-08-19 12:18:25",
"updated_at": "2020-08-26 06:55:21",
"employee": {
"id": 1,
"first_name": "Baseapp",
"last_name": "saw"
}
}
当我尝试按存在另一个表的员工姓名进行搜索时,如果存在数据,则应过滤数据并给出响应,但如果不存在员工姓名或搜索数据,则数据不应给出任何响应。 如何处理?
{
"search":"sure"
}
{
"id": 2,
"company_id": 1,
"employee_id": 1,
"survey_id": 2,
"es_question_id": 1,
"answer": "done",
"submission_id": "1",
"mark_as_read": 1,
"created_at": "2020-08-19 12:18:25",
"updated_at": "2020-08-26 06:55:21",
"employee": null
}
这里数据为空,但为什么显示父数据。 请帮忙并给出另一个想法来过滤关系数据。
我们使用whereHas
在相关表中进行过滤。 所以像这样使用它
$query = EsAnswer::with('employee:id,first_name,last_name')
->where(['company_id' => $company->id, 'survey_id' => $survey->id])
->whereHas('employee', function($query) use($search) {
$query->where('first_name', 'LIKE', "%{$search}%")
->orwhere('last_name', 'LIKE', "%{$search}%");
})
->orderByDesc('created_at');
这将在您的相关表中搜索并在未找到任何内容时返回 null。 我添加了一种优雅的方式来急切加载数据。 你也应该看看这个。
使用whereHas()
函数
$query = EsAnswer::with('employee:id,first_name,last_name')
->where(['company_id' => $company->id, 'survey_id' => $survey->id])
->whereHas('employee', function($query) use($search) {
$query->where('first_name', 'LIKE', "%$search%")
->orwhere('last_name', 'LIKE', "%$search%");
})
->orderByDesc('created_at');
参考链接https://laravel.com/docs/7.x/eloquent-relationships#querying-relationship-existence
它使用 whereHas,然后使用:
$query = EsAnswer::where(['company_id' => $company->id, 'survey_id' => $survey->id])
->orderByDesc('created_at')
->whereHas('employee', function ($q) use($search) {
return $q->where('first_name', 'LIKE', "%{$search}%")
->orwhere('last_name', 'LIKE', "%{$search}%");
})->with(['employee' => function ($q){
$q->select('id', 'first_name', 'last_name');
}]);
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