README

A SilverStripe dropdown field that has its options populated via ajax, based on the value of the field it depends on.

Requirements

SilverStripe 6

Installation

composer require sheadawson/silverstripe-dependentdropdownfield 

Usage example

With dropdown field

// 1. Create a callable function that returns an array of options for the DependentDropdownField. // When the value of the field it depends on changes, this function is called passing the // updated value as the first parameter ($val) $datesSource = function($val) { if ($val == 'one') { // return appropriate options array if the value is one. } if ($val == 'two') { // return appropriate options array if the value is two. } }; $fields = FieldList::create( // 2. Add your first field to your field list, $fieldOne = DropdownField::create('FieldOneID', 'Field One', ['one' => 'One', 'two' => 'Two']), // 3. Add your DependentDropdownField, setting the source as the callable function // you created and setting the field it depends on to the appropriate field DependentDropdownField::create('FieldTwoID', 'Field Two', $datesSource)->setDepends($fieldOne) );

With listbox field

// 1. Create a callable function that returns an array of options for the DependentListboxField. // When the value of the field it depends on changes, this function is called passing the // updated value as the first parameter ($val) $datesSource = function($val) { if ($val == 'one') { // return appropriate options array if the value is one. } if ($val == 'two') { // return appropriate options array if the value is two. } }; $fields = FieldList::create( // 2. Add your first field to your field list, $fieldOne = ListboxField::create('FieldOneManyManyRelation', 'Field One', [1 => 'One', 2 => 'Two']), // 3. Add your DependentListboxField, setting the source as the callable function // you created and setting the field it depends on to the appropriate field DependentListboxField::create('FieldTwoManyManyRelation', 'Field Two', $datesSource)->setDepends($fieldOne) );