Laravel 5.4 : 在模型中编写 SQL 查询

Question

我正在做一个小型 laravel 项目，我用它在控制器中编写所有 sql 查询，然后将数据发送到视图。

这是我的控制器的一个功能：

 public function view_all_applicants($job_id,$job_title)
    {

        $sql = DB::select("SELECT jm.`jobseeker_id`,jm.`jobseeker_name`,jm.`jobseeker_phone`,jm.`login_email`,jm.`jobseeker_coverletter`,jm.`jobseeker_cv`,
                  jm.`jobseeker_education`,jm.`jobseeker_experience`,jm.`jobseeker_linkedin`,aj.`cover_letter`,aj.`date_applied`
                  FROM `jobseeker_main` AS jm
                  JOIN `applicants_for_job` AS aj ON jm.`jobseeker_id`=aj.`jobseeker_id`
                  JOIN `job_details` AS jd ON jm.`jobseeker_id`=jd.`job_id`
                  WHERE aj.`job_id`=$job_id");

        $count = DB::select("SELECT COUNT(DISTINCT(aj.`afj_id`)) AS total FROM `jobseeker_main` AS jm
                             JOIN `applicants_for_job` AS aj ON jm.`jobseeker_id`=aj.`jobseeker_id`
                             JOIN `job_details` AS jd ON jm.`jobseeker_id`=jd.`job_id` WHERE aj.`job_id`=$job_id");

        foreach($count as $ss)
        {
            $data['total'] = $ss->total;
        }

        return view('company.applicants_for_job',$data,compact('sql'));     

    }

如您所见，我在这里运行两个 sql 查询，然后将数据发送到视图。我的问题是，无论如何我可以在模型（而不是控制器）中编写查询，然后将结果发送到视图？我是 Laravel 的新手。请帮助。

Answer 1

当然，您完全可以将上述代码放入相关模型的方法中，然后调用该方法。但是，人们通常不会直接从他们的 View 调用 Model 方法。 Controller 应该 assemble View 需要的数据，因此，Controller 应该从 Model 中拉取数据，然后传递给 View。

例如：

MyModel.php

class MyModel {


    public function getX($job_id) {
       $sql = DB::select("SELECT jm.`jobseeker_id`,jm.`jobseeker_name`,jm.`jobseeker_phone`,jm.`login_email`,jm.`jobseeker_coverletter`,jm.`jobseeker_cv`,
                  jm.`jobseeker_education`,jm.`jobseeker_experience`,jm.`jobseeker_linkedin`,aj.`cover_letter`,aj.`date_applied`
                  FROM `jobseeker_main` AS jm
                  JOIN `applicants_for_job` AS aj ON jm.`jobseeker_id`=aj.`jobseeker_id`
                  JOIN `job_details` AS jd ON jm.`jobseeker_id`=jd.`job_id`
                  WHERE aj.`job_id`=$job_id");

        return $sql;
    }

    public function getCount() {
       $count = DB::select("SELECT COUNT(DISTINCT(aj.`afj_id`)) AS total FROM `jobseeker_main` AS jm
                             JOIN `applicants_for_job` AS aj ON jm.`jobseeker_id`=aj.`jobseeker_id`
                             JOIN `job_details` AS jd ON jm.`jobseeker_id`=jd.`job_id` WHERE aj.`job_id`=$job_id");

        return $count;
    }
}

Controller.php

public function __construct(MyModel $model)
{
   $this->model = $model;
}

public function index(Request $request, $job_id) {

   $x = $this->model->getX($job_id);
   $count = $this->model->count();

   $data['x'] = $x;
   $data['count'] = $count;

   return view('company.applicants_for_job',$data);

}

更新：

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Laravel 5.4 : 在模型中编写 SQL 查询

Laravel 5.4 : Writing SQL query in Model

sql

model-view-controller

laravel

laravel-5

laravel-query-builder