a.montask/app/Models/Tasks.php

<?php

namespace App\Models;

use Illuminate\Console\View\Components\Task;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\DB;
use Illuminate\Database\Eloquent\SoftDeletes;



class Tasks extends Model
{
    use HasFactory,SoftDeletes;

    protected $table = 'tasks';

    protected $fillable = [
        'task_id',
        'title',
        'description',
        'assignees',
        'start_date',
        'target_date',
        'priority',
        'description_html',
        'completed_at',
        'state',
        'json',
        'created_at',
        'updated_at',
        'deleted_at',
        'created_by',
        'updated_by',
        'deleted_by',
        'id',
        'app',
        'task_type',
        'user_id',
    ];

    protected $STATE = [
        1=>'Backlog',
        2=>'To Do',
        3=>'In Progress',
        4=>'Done',
    ];
    protected $state_fa = [
        1=>'انباشته',
        2=>'برای انجام',
        3=>'درحال انجام',
        4=>'پایان یافته',
    ];

    public function getStateFaAttribute()
    {
        return $this->state_fa[$this->state] ?? 'نامشخص';
    }

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

    public function app(){
        return $this->belogsTo(App::class);
    }

    public function duration(){
        return $this->hasMany(TaskDuration::class, 'task_id', 'id');
    }

    public function comments()
    {
        return $this->hasMany(TaskComment::class, 'task_id', 'id')->orderBy('id', 'desc');
    }

    public function userDurations($userId = null)
    {
        $userId = $userId ?: User::where('user_name', $_COOKIE['user_identity'])->first()->id; // پیش‌فرض: کاربر جاری
        return $this->taskDurations()->where('user_id', $userId);
    }

    public function filterByState($tasks){
        $backlog = [];
        $todo = [];
        $inprogress = [];
        $done = [];
        foreach($tasks as $task){
            if($task->state == 1){
                $backlog[] = $task;
            }elseif ($task->state == 2){
                $todo[] = $task;
            }elseif ($task->state == 3){
                $inprogress[] = $task;
            }elseif ($task->state == 4){
                $done[] = $task;
            }
        }
        $tasks = [
            'backlog' => $backlog,
            'todo' => $todo,
            'inprogress' => $inprogress,
            'done' => $done,
//            'count' => count($tasks),
        ];
        return $tasks;
    }


//    public function users()
//    {
////        return $this->belongsToMany(User::class, 'pivot_tasks', 'task_id', 'user_id');
//        return $this->belongsToMany(
//            User::class,
//            'pivot_tasks',
//            'task_id',
//            'user_id',
//            'task_id',
//            'plain_id',
//        );
//    }

//    public function pivotTask()
//    {
//        return DB::table('pivot_tasks')
//            ->where('task_id', $this->task_id);
//    }

}