DEV Community: anditsung

remove already attach item on laravel nova

anditsung — Fri, 12 Nov 2021 09:36:38 +0000

on nova resource class check the relatableQuery function

add this

 /**
     * Build a "relatable" query for the given resource.
     *
     * This query determines which instances of the model may be attached to other resources.
     *
     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
     * @param  \Illuminate\Database\Eloquent\Builder  $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public static function relatableQuery(NovaRequest $request, $query)
    {
        if ($request->is('nova-api/*/*/attach*/*')) {
            if (! $request->current) {
                $query = self::removeAlreadyAttachItem($query, $request);
            }
            else if ($request->current && ! $request->first) {
                $query = self::removeAlreadyAttachItem($query, $request);
            }
        }

        return parent::relatableQuery($request, $query);
    }

remove already attach item function

private static function removeAlreadyAttachItem($query, $request)
    {
        $relationName = Str::plural(Str::snake(class_basename($query->getModel())));

        $model = $request->findResourceOrFail()->model();

        $model->load($relationName);

        $items = $model->getRelation($relationName)->map(function ($model) {
            return collect($model->toArray())->only('id')->all();
        });

        return $query->whereNotIn('id', $items);
    }

override delete button on laravel nova crud

anditsung — Tue, 12 Nov 2019 07:47:06 +0000

to override delete button on nova add this to model class

public function delete()
{
    $this->setKeysForSaveQuery($this->newModelQuery())->update(['active' => false]);
    return true;
}

this will make delete button to update active field instead of delete it.

disable view on laravel nova attach

anditsung — Tue, 12 Nov 2019 07:44:31 +0000

to disable view on attach item add this to the resource that want to be disable to view

public function authorizedToView(Request $request)
{
    if($request->query->get("viaResource")) {
        return false; 
    }
    return true;
}

"$request->query->get("viaResource")" to find if the resource is accessed from other resource