I am writing a custom module in which i am declaring a $form element as #type=> 'datetime'

The code for the buildForm method is

 $form['timesave'] = array(
    '#type' => 'datetime',
    '#title' => $this->t('Select Date and time'),

Now my question is how do we get the value of the field on form Submit as i have to store the value in a configuration

I have tried with


This is giving an array some protected methods.


You can use the method getTimeStamp() to store the timestamp like this :


Or you can use the format() function to store a formatting date.

$form_state->getValue('timesave')->format("Y-m-d H:i:s");
| improve this answer | |
  • Yup. Basically, the return value from $form_state->getValue('timesave') is a DrupalDateTime object, so any of the public methods/properties will work. – mpdonadio Jul 31 '17 at 15:04
  • doesn't work like that... at least in Drupal 8. – Dazag Mar 14 '19 at 12:01

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