How do I add a drop down list to my Suitelet form using an existing custom list?

AI generated answer (using internal Slack threads):

To add a dropdown list to your Suitelet form using an existing custom list, you can use the

addField

method on the form object and set the

source

property to the internal ID of your custom list. Here is an example:

javascript
var form = serverWidget.createForm({
    title: 'My Form'
});

var dropdown = form.addField({
    id: 'mydropdown',
    type: serverWidget.FieldType.SELECT,
    label: 'My Dropdown',
    source: 'customlist_my_custom_list' // replace with your custom list's internal ID
});

In this example,

serverWidget

is a reference to the

N/ui/serverWidget

module, which provides SuiteScript 2.0 API for creating and manipulating UI objects on the server side. If you want to dynamically change the options in the dropdown based on another field's value, you can use a client script. In the client script, you can use the

insertSelectOption

method to add new options to the dropdown. Here is an example:

javascript
define(['N/currentRecord', 'N/log'],
    function(currentRecord, log) {
        function fieldChanged(context) {
            var record = context.currentRecord;
            var dropdown = record.getField({fieldId: 'mydropdown'});
            dropdown.insertSelectOption({value: 'Option1',text: 'alpha'});
        }
    }
);

In this example,

N/currentRecord

is a reference to the

N/currentRecord

module, which provides API for working with the current record in the client script. The

fieldChanged

function is a client script entry point function that is triggered when a field is changed. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******