Composite form field rendered as an HTML details tag, with child fields

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v1.0.0-rc1 2023-05-26 02:43 UTC

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Last update: 2024-03-26 04:23:37 UTC


This module implements a FormField for Silverstripe using the HTML Details element.

The field is a CompositeField allowing zero or more child fields to be displayed when the element is in an open state.

It's useful for containing long selection fields and/or optional information not required in a form submission.


After module installation, use the DetailsField in code:

Adding child fields

namespace MyApp;

use NSWDPC\Forms\DetailsField\DetailsField;
use SilverStripe\Forms\FieldList;
use SilverStripe\Forms\TextField;

// ... etc

$childFields = FieldList::create(
    TextField::create('Salutation', _t('myapp.SALUTATION','Salutation')),
    TextField::create('FirstName', _t('myapp.FIRST_NAME','First name')),
    TextField::create('Surname', _t('myapp.SURNAME','Surname'))

$detailsField = DetailsField::create($childFields)
            'Provide some optional information'
            'A field description'
// by default the element is in a closed state, to open by default (or when values are present in the child fields)
// $detailsField = $detailsField->setIsOpen(true)

// push onto form fields
// ... etc

See tests/DetailsFieldTest for more.

Example rendered field

Provide some optional information

A field description

Salutation [___________] First name [___________] Surname [___________]


  • setTitle is aliased to the setSummary method, both set the title property value on the field
  • You can set a standard FormField description, right title and field validation message
  • IsOpen and Summary return those property values, for use in templates
  • As the <summary> element can contain certain HTML, you can provide a DBHTMLVarchar field as the value to setTitle or setSummary
  • When the field or a child field has a validation message, the details element will be open by default


composer require nswdpc/silverstripe-details-field





We welcome bug reports, pull requests and feature requests on the Github Issue tracker for this project.

Please review the code of conduct prior to opening a new issue.


If you have found a security issue with this module, please email digital[@]dpc.nsw.gov.au in the first instance, detailing your findings.

Development and contribution

If you would like to make contributions to the module please ensure you raise a pull request and discuss with the module maintainers.

Please review the code of conduct prior to completing a pull request.