Laravel 处理多个查询和连接的最佳实践

Question

I need a code suggestion.

Basically I'm developing a system that requires a lot of joins and relationship in the database. Currently in Laravel I'm using Query Builder for Database queries in the application.

Currently I have this example of Querying in the database.

 $approved = DB::table('employee_overtimes as eo')
            ->select('eo.id as id', 'eo.employee_id as eo_employee_id', 'eo.overtime_date', 'eo.time_in', 'eo.time_out', 'eo.approver_id', 'eo.remarks', 'eo.status',
                'firstname','lastname','employee.employee_no', 'employee.id as employee_id', 'eo.created_at')
            ->join('employee' , 'employee.id', '=', 'eo.employee_id')
            ->where('eo.status', '=', 'Approved')
            ->orderByDesc('eo.created_at')
            ->orderBy('lastname', 'ASC')
            ->get();

Can Anyone suggest a better approach in handling this kind of queries? Because it becoming repetitive in my controller.

Answer 1

Its okay to use the querybuilder instead of eloquent because it is more faster and sometimes eloquent cant handle complex queries. And also, avoid using DB::raw because it is prone to sql injections. Please refer to this article https://kursuswebprogramming.com/perbedaan-eloquent-dan-query-builder-laravel/

And for your concern about the repetitive code, you must create your custom function or library and then you can use it in each of your controller as you wish.

Let me show you some comparison

Eloquent ORM (Execution time: 1.41 s, Queries Executed: 1000)

<?php

Route::get("test",function(){
    for($i=0;$i<1000;$i++){
         $t=new Country();
         $t->label=$i." Row";
         $t->save();
    }
}); 
?>

Query Builder (Execution time: 938 ms, Queries Executed: 1000)

<?php
Route::get("test",function(){
    for($i=0;$i<1000;$i++){
         DB::table("countries")->insert(["label"=>$i." Row"]);
    }
});
?>

Now this is a prove that Query Builder is 0.5 s faster than Eloquent.