ReversedTransformer example

$secondOptions['empty_data'] = $emptyData['second'];
                }
                $builder->add('second', self::WIDGETS[$options['widget']], $secondOptions);
            }

            $builder->addViewTransformer(new DateTimeToArrayTransformer($options['model_timezone'], $options['view_timezone'], $parts, 'text' === $options['widget'], $options['reference_date']));
        }

        if ('datetime_immutable' === $options['input']) {
            $builder->addModelTransformer(new DateTimeImmutableToDateTimeTransformer());
        } elseif ('string' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToStringTransformer($options['model_timezone'], $options['model_timezone'], $options['input_format'])
            ));
        } elseif ('timestamp' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToTimestampTransformer($options['model_timezone'], $options['model_timezone'])
            ));
        } elseif ('array' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToArrayTransformer($options['model_timezone'], $options['model_timezone'], $parts, 'text' === $options['widget'], $options['reference_date'])
            ));
        }

        

// when compound the array entries are ignored, we need to cascade the configuration here                         'empty_data' => $options['empty_data'][$part] ?? null,
                    ];
                    if ('choice' === $options['widget']) {
                        $childOptions['choice_translation_domain'] = false;
                        $childOptions['choices'] = $options[$part];
                        $childOptions['placeholder'] = $options['placeholder'][$part];
                    }
                    $childForm = $builder->create($part, self::WIDGETS[$options['widget']], $childOptions);
                    if ('integer' === $options['widget']) {
                        $childForm->addModelTransformer(
                            new ReversedTransformer(
                                new IntegerToLocalizedStringTransformer()
                            )
                        );
                    }
                    $builder->add($childForm);
                }
            }
            if ($options['with_invert']) {
                $builder->add('invert', CheckboxType::class, [
                    'label' => $options['labels']['invert'],
                    'error_bubbling' => true,
                    

->add('day', self::WIDGETS[$options['widget']], $dayOptions)
                ->addViewTransformer(new DateTimeToArrayTransformer(
                    $options['model_timezone'], $options['view_timezone'], ['year', 'month', 'day']
                ))
                ->setAttribute('formatter', $formatter)
            ;
        }

        if ('datetime_immutable' === $options['input']) {
            $builder->addModelTransformer(new DateTimeImmutableToDateTimeTransformer());
        } elseif ('string' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToStringTransformer($options['model_timezone'], $options['model_timezone'], $options['input_format'])
            ));
        } elseif ('timestamp' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToTimestampTransformer($options['model_timezone'], $options['model_timezone'])
            ));
        } elseif ('array' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToArrayTransformer($options['model_timezone'], $options['model_timezone'], ['year', 'month', 'day'])
            ));
        }

        

/** * @return void */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        if ('string' === $options['input']) {
            $builder->addModelTransformer(new WeekToArrayTransformer());
        }

        if ('single_text' === $options['widget']) {
            $builder->addViewTransformer(new ReversedTransformer(new WeekToArrayTransformer()));
        } else {
            $yearOptions = $weekOptions = [
                'error_bubbling' => true,
                'empty_data' => '',
            ];
            // when the form is compound the entries of the array are ignored in favor of children data             // so we need to handle the cascade setting here             $emptyData = $builder->getEmptyData() ?: [];

            $yearOptions['empty_data'] = $emptyData['year'] ?? '';
            $weekOptions['empty_data'] = $emptyData['week'] ?? '';

            

'time' => $timeParts,
                    ]),
                ]))
                ->add('date', DateType::class, $dateOptions)
                ->add('time', TimeType::class, $timeOptions)
            ;
        }

        if ('datetime_immutable' === $options['input']) {
            $builder->addModelTransformer(new DateTimeImmutableToDateTimeTransformer());
        } elseif ('string' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToStringTransformer($options['model_timezone'], $options['model_timezone'], $options['input_format'])
            ));
        } elseif ('timestamp' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToTimestampTransformer($options['model_timezone'], $options['model_timezone'])
            ));
        } elseif ('array' === $options['input']) {
            $builder->addModelTransformer(new ReversedTransformer(
                new DateTimeToArrayTransformer($options['model_timezone'], $options['model_timezone'], $parts)
            ));
        }