Magento 2 Fatal error when adding date field in admin form and save

Question

I am developing a custom module where there are many fields text,select,multiselect..etc in admin form.

Today I have added one field in admin of type time ,below is the code to add new field

$timeFormat = $this->_localeDate->getTimeFormat(\IntlDateFormatter::MEDIUM);

$actionTime = $fieldset->addField(
                    'action_time',
                    'time',
                    [   
                        'name'      => 'action_time',
                        'label'     => __('Time'),
                        'class'     => 'required-entry',
                        'required'  => true,
                        'time_format'=> $timeFormat,
                        'time'=>true
                    ]
                );

and in installSchema.php I have put below code to add column in table

)->addColumn(
             'action_time',
            \Magento\Framework\DB\Ddl\Table::TYPE_TIMESTAMP,
            255,
            ['nullable' => false],
            'Action Time'
        )

Field created successfully but it throwing error when saving form.

Fatal error: Uncaught TypeError: DateTime::__construct() expects parameter 1 to be string, array given in /var/www/html/Magento2/vendor/magento/framework/Stdlib/DateTime.php:57 Stack trace: #0 /var/www/html/Magento2/vendor/magento/framework/Stdlib/DateTime.php(57): DateTime->__construct(Array) #1 /var/www/html/Magento2/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(2764): Magento\Framework\Stdlib\DateTime->formatDate(Array, true) #2 /var/www/html/Magento2/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php(3001): Magento\Framework\DB\Adapter\Pdo\Mysql->formatDate(Array) #3 /var/www/html/Magento2/vendor/magento/framework/Model/ResourceModel/AbstractResource.php(183): Magento\Framework\DB\Adapter\Pdo\Mysql->prepareColumnValue(Array, Array) #4 /var/www/html/Magento2/vendor/magento/framework/Model/ResourceModel/Db/AbstractDb.php(541): Magento\Framework\Model\ResourceModel\AbstractResource->_prepareDataForTable(Object(Vendorname\Modulename\Model\Grid), 'manage_feed_dat...') #5 /var/www/html/Magento2/vendor/magento/framework in /var/www/html/Magento2/vendor/magento/framework/Stdlib/DateTime.php on line 57

I have debugged but not found any issue.Please help me.

Answer 1

first, sorry if my english is bad, i hope u know my ideal. type time in formfield return array, like Array [ [0] => 04 , [1] => 20, [2] => 54 ] : 04h:20m:54s.
To save value time field, try it $data['action_time'] = $data['action_time'][0] . ':' . $data['action_time'][1] . ':' .$data['action_time'][2] ;