select in laravel eloquent relationships code example

Example 1: laravel eloquent relationships

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Project extends Model
{
    /**
     * Get all of the deployments for the project.
     */
    public function deployments()
    {
        return $this->hasManyThrough(Deployment::class, Environment::class);
    }
}

Example 2: eloquent relationships

$roles = App\User::find(1)->roles()->orderBy('name')->get();

Example 3: query relationships laravel and select some columns

Post::query()
    ->with(array('user' => function($query) {
        $query->select('id','username');
    }))
    ->get();