93 lines
3.1 KiB
PHP
93 lines
3.1 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Traits\Controllers;
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use App\Http\Requests\Bo\ChangeOrderRequest;
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use App\Services\FlashMessageService;
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use Illuminate\Database\Eloquent\Model;
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use Illuminate\Http\RedirectResponse;
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use Illuminate\Support\Collection;
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use Illuminate\Support\Facades\DB;
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use SortDirection;
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trait ChangesModelOrder
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{
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private const MODEL_ATTRIBUTE_NAME = 'order';
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private const MAX_ORDER_VALUE = 4294967295;
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public function changeOrder(
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ChangeOrderRequest $request,
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FlashMessageService $flashMessageService
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): RedirectResponse {
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/** @var Model|null $model */
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$model = Collection::make(request()->route()?->parameters())
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->first(fn ($param) => $param instanceof Model);
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if ($model === null && method_exists($this, 'getModelClass')) {
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$modelClass = $this->getModelClass();
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/** @var Model $modelInstance */
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$modelInstance = app($modelClass);
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$routeParams = request()->route()?->parameters() ?? [];
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unset($routeParams['action']);
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$identifier = reset($routeParams);
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if (is_string($identifier) || is_int($identifier)) {
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$model = $modelInstance->resolveRouteBinding($identifier);
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}
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}
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if ($model === null || ! $model instanceof Model || ! array_key_exists(self::MODEL_ATTRIBUTE_NAME, $model->getAttributes())) {
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throw new \InvalidArgumentException('Model must exists and extend Model and have an order attribute');
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}
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return DB::transaction(function () use ($model, $request, $flashMessageService) {
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$goUp = $request->boolean('direction');
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$adjacentModel = $model->newQuery()
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->where(
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self::MODEL_ATTRIBUTE_NAME,
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$goUp ? '<' : '>',
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$model->getAttribute(self::MODEL_ATTRIBUTE_NAME)
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)
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->orderBy(self::MODEL_ATTRIBUTE_NAME, $goUp ?
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SortDirection::Descending : SortDirection::Ascending)
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->first();
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if (! $adjacentModel) {
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$flashMessageService->error(trans('crud.messages.order_not_changed'));
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return back();
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}
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$this->permuteModelOrders($model, $adjacentModel);
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$flashMessageService->success(trans('crud.messages.order_changed'));
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return back();
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});
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}
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private function permuteModelOrders(Model $model1, Model $model2): void
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{
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$order1 = $model1->getAttribute(self::MODEL_ATTRIBUTE_NAME);
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$order2 = $model2->getAttribute(self::MODEL_ATTRIBUTE_NAME);
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// * Deactivate timestamps to avoid updating `updated_at`
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$model1->timestamps = false;
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$model2->timestamps = false;
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$model1->setAttribute(self::MODEL_ATTRIBUTE_NAME, self::MAX_ORDER_VALUE);
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$model1->saveQuietly();
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$model2->setAttribute(self::MODEL_ATTRIBUTE_NAME, $order1);
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$model2->saveQuietly();
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$model1->setAttribute(self::MODEL_ATTRIBUTE_NAME, $order2);
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$model1->saveQuietly();
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}
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}
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