Umbraco Forms - Merging multiple inputs on fieldtype

Questions
1

Hello,

Using Umbraco Forms 4.1.4 what is the best practice for developing an field type that has multiple inputs ?

I have a custom field type, with three inputs (in this example its day, month year) and i want to merge them into a single (date) field.

in the FieldType class I have Overrriden ProcessSubmittedValue to merge the three fields into one and return that in the vals object.

public override IEnumerable<object> ProcessSubmittedValue(Field field, IEnumerable<object> postedValues, HttpContextBase context)
{
	LogHelper.Info<SimpleDatePicker>("ProcessSubmittedValue");

	var vals = new List<object>();

	var day = int.Parse(context.Request["dob-day"].ToString());
	var month = int.Parse(context.Request["dob-month"].ToString());
	var year = int.Parse(context.Request["dob-year"].ToString());

	var date = new DateTime(year, month, day);

	vals.Add(date);

	return vals; 
}

on submit this gets called and the value does get submitted - i can see that in the form entries.

however when i set it to mandatory, the validation fails - the JQuery validation passes - it appears to fail on the server side.

I have overriden ValidateFeilds . with the below.

public override IEnumerable<string> ValidateField(Form form, Field field, IEnumerable<object> postedValues, HttpContextBase context)
{
	LogHelper.Info<SimpleDatePicker>("Validate Field? {0}", () => field.Alias);

	if ( field.Values != null && field.Values.Any() )
	{
		LogHelper.Info<SimpleDatePicker>("Validate Has Values");
		var date = (DateTime)field.Values.First();
		return new List<string>();
	}

	LogHelper.Info<SimpleDatePicker>("Passing to base");
	return base.ValidateField(form, field, postedValues, context);
}

but looking in the logs, i never get to “Has Values” -

Do i access the values via context like i have done in the ProcessSubmit ? or am i missing something to get the values in the Field.Values for validation ?

This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/72208-umbraco-forms-merging-multiple-inputs-on-fieldtype