CourseWork/app/Models/Student.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\MorphOne;

class Student extends Model
{
    use HasFactory;

    protected $fillable = [
        'name',
        'last_name',
        'middle_name',
        'birthday',
        'grade_id',
    ];

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

    public function user(): MorphOne
    {
        return $this->morphOne(User::class, 'userable');
    }

    public function subjects(): BelongsToMany
    {
        return $this->belongsToMany(Subject::class);
    }

    public function lessons(): BelongsToMany
    {
        return $this->belongsToMany(Lesson::class);
    }

    public function scopeFilter(Builder $query): void
    {
        $name = request('name');
        $query->when($name, function (Builder $query, $name) {
            $query->whereRaw('CONCAT (name, \' \', last_name, \' \', middle_name) ilike ?', ["$name%"]);
            $query->orWhereRaw('CONCAT (name, \' \', middle_name, \' \', last_name) ilike ?', ["$name%"]);
            $query->orWhereRaw('CONCAT (last_name, \' \', name, \' \', middle_name) ilike ?', ["$name%"]);
            $query->orWhereRaw('CONCAT (last_name, \' \', middle_name, \' \', name) ilike ?', ["$name%"]);
            $query->orWhereRaw('CONCAT (middle_name, \' \', name, \' \', last_name) ilike ?', ["$name%"]);
            $query->orWhereRaw('CONCAT (middle_name, \' \', last_name, \' \', name) ilike ?', ["$name%"]);
        });
    }

    public function fio(): Attribute
    {
        return Attribute::make(
            get: fn () => $this->last_name.' '.$this->name.' '.$this->middle_name,
        );
    }
}