CourseWork/app/Models/Teacher.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\MorphOne;
use Illuminate\Database\Eloquent\Builder;
class Teacher extends Model
{
    use HasFactory;

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

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

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

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

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

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