LMS/app/Models/CourseRequest.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class CourseRequest extends Model
{
    use HasFactory;

    protected $fillable = [
        'organization_id',
        'requested_by_user_id',
        'status',
        'approved_by',
        'approved_at',
        'note',
    ];

    protected $casts = [
        'approved_at' => 'datetime',
    ];

    public function organization(): BelongsTo
    {
        return $this->belongsTo(Organization::class);
    }

    public function requestedBy(): BelongsTo
    {
        return $this->belongsTo(User::class, 'requested_by_user_id');
    }

    public function approvedBy(): BelongsTo
    {
        return $this->belongsTo(User::class, 'approved_by');
    }

    public function items(): HasMany
    {
        return $this->hasMany(CourseRequestItem::class);
    }

    public function isPending(): bool
    {
        return $this->status === 'pending';
    }

    public function isApproved(): bool
    {
        return $this->status === 'approved';
    }

    public function isRejected(): bool
    {
        return $this->status === 'rejected';
    }

    public function approve(User $approvedBy): void
    {
        $this->update([
            'status' => 'approved',
            'approved_by' => $approvedBy->id,
            'approved_at' => now(),
        ]);
    }

    public function reject(User $approvedBy): void
    {
        $this->update([
            'status' => 'rejected',
            'approved_by' => $approvedBy->id,
            'approved_at' => now(),
        ]);
    }
}