nova-polymorphic-field rules('required') is ignored

When saving a PolymorphicField::make('Type') with a Text::make('Client')->rules('required') field, the rules('required') is ignored...

Oct 20 '18 03:10 horaceho

Possibly the solution in the Nova Dependency Container could resolve this issue? https://github.com/epartment/nova-dependency-container/issues/15

Nov 03 '18 01:11 jasonlav

The solution used by nova-dependency-container suggested by @jasonlav seems to work for me. I just create a custom HasPolymorphicFields trait and use it instead of the one used by the package.

UPDATE This solution DOESN'T works. Validation rules are correctly applied but the store fails because Nova try to store the polymorphic fields also in the resource that contains them.

trait HasPolymorphicFields
{
    /**
     * @param NovaRequest $request
     * @return FieldCollection
     */
    public function availableFields(NovaRequest $request)
    {
        $fields = $this->fields($request);
        $availableFields = [];

        foreach ($fields as $field) {
            if ($field instanceof PolymorphicField) {
                $availableFields[] = $field;

                foreach ($field->meta['types'] as $type) {
                    if ($this->doesRouteRequireChildFields()) {
                        $availableFields = array_merge($availableFields, $type['fields']);
                    }
                }
            } else {
                $availableFields[] = $field;
            }
        }

        return new FieldCollection(array_values($this->filter($availableFields)));
    }

    /**
     * @return bool
     */
    protected function requestIsAssociateRequest() : bool
    {
        return ends_with(Route::currentRouteAction(), 'AssociatableController@index');
    }

    /**
     * @return bool
     */
    protected function doesRouteRequireChildFields() : bool
    {
        return ends_with(Route::currentRouteAction(), 'AssociatableController@index')
            || ends_with(Route::currentRouteAction(), 'ResourceStoreController@handle')
            || ends_with(Route::currentRouteAction(), 'ResourceUpdateController@handle');
    }
}