<?php

namespace App\Filament\Fields;

use App\Models\Filter;
use Filament\Forms\Components\Select;
use Illuminate\Database\Eloquent\Builder;

class TagSelect extends Select
{
    public function setUp(): void
    {
        parent::setUp();

        $this->multiple()
            ->searchable()
            ->relationship('filters', 'name', fn (Builder $query) => $query->tag())
            ->loadStateFromRelationshipsUsing(function (Select $component, $state): void {
                if (filled($state)) {
                    return;
                }

                $relationship = $component->getRelationship();

                $relatedModels = $relationship->where('type', 'tag')->getResults();
                $component->state(
                    $relatedModels
                        ->pluck($relationship->getRelatedKeyName())
                        ->map(static fn ($key): string => strval($key))
                        ->toArray(),
                );
            })
            ->saveRelationshipsUsing(function (Select $component, $state) {
                $relationship = $component->getRelationship();

                $allTagFilters = Filter::where('type', 'tag')->pluck('id');

                $relationship->detach($allTagFilters);
                $relationship->attach($state);
            });
    }
}

<?php

namespace App\Filament\Fields;

use App\Models\Filter;
use Filament\Forms\Components\Select;
use Illuminate\Database\Eloquent\Builder;

class TagSelect extends Select
{
    public function setUp(): void
    {
        parent::setUp();

        $this->multiple()
            ->searchable()
            ->relationship('filters', 'name', fn (Builder $query) => $query->tag())
            ->loadStateFromRelationshipsUsing(function (Select $component, $state): void {
                if (filled($state)) {
                    return;
                }

                $relationship = $component->getRelationship();

                $relatedModels = $relationship->where('type', 'tag')->getResults();
                $component->state(
                    $relatedModels
                        ->pluck($relationship->getRelatedKeyName())
                        ->map(static fn ($key): string => strval($key))
                        ->toArray(),
                );
            })
            ->saveRelationshipsUsing(function (Select $component, $state) {
                $relationship = $component->getRelationship();

                $allTagFilters = Filter::where('type', 'tag')->pluck('id');

                $relationship->detach($allTagFilters);
                $relationship->attach($state);
            });
    }
}