Version 5 supported

DateField

This FormField subclass lets you display an editable date, in a single text input field. It implements the HTML5 input date type (with type=date). In supported browsers, this will cause a localised date picker to appear for users. HTML5 date fields present and save ISO 8601 date formats (y-MM-dd), since the browser takes care of converting to/from a localised presentation. Browsers without support receive an <input type=text> based polyfill.

The following example will add a simple DateField to your Page, allowing you to enter a date manually.

app/src/Page.php

use SilverStripe\Forms\DateField;
use SilverStripe\CMS\Model\SiteTree;

class Page extends SiteTree 
{
    private static $db = [
        'MyDate' => 'Date',
    ];

    public function getCMSFields() 
    {
        $fields = parent::getCMSFields();
        
        $fields->addFieldToTab(
            'Root.Main',
            DateField::create('MyDate', 'Enter a date')
        );
        
        return $fields;
    } 
}

Custom Date Format

A custom date format for a DateField can be provided through setDateFormat. This is only necessary if you want to opt-out of the built-in browser localisation via type=date.

// will display a date in the following format: 31/06/2012
DateField::create('MyDate')
    ->setHTML5(false)
    ->setDateFormat('dd/MM/yyyy');
The formats are based on ICU format.

Min and Max Dates

Sets the minimum and maximum allowed date values using the min and max configuration settings (in ISO format or strtotime()).

DateField::create('MyDate')
    ->setMinDate('-7 days')
    ->setMaxDate('2012-12-31')

Formatting Hints

It's often not immediate apparent which format a field accepts, and showing the technical format (e.g. HH:mm:ss) is of limited use to the average user. An alternative is to show the current date in the desired format alongside the field description as an example.

$dateField = DateField::create('MyDate');

// Show long format as text below the field
$dateField->setDescription(_t(
    'FormField.Example',
     'e.g. {format}',
     [ 'format' =>  $dateField->getDateFormat() ]
));

// Alternatively, set short format as a placeholder in the field
$dateField->setAttribute('placeholder', $dateField->getDateFormat());

API Documentation

Edit on Github