How to create number field unique list using javascript?

Question

I am creating lists from javascript in my app.
Now I want to create a Field in that with unique values which is a number field.

I am using following code:

var fldCollection = oList.get_fields(); var f2 = context.castTo( accordionList.get_fields().addFieldAsXml("<Field Type='Number' DisplayName='AccordionOrder' Name='AccordionOrder' Required='True' Indexed='True' EnforceUniqueValues='True'/>", true, SP.AddFieldOptions.addToDefaultContentType), SP.FieldNumber); f2.set_title("AccordionOrder"); f2.update(); context.executeQueryAsync(onSuccessFieldAdd, onFail); 

But when the code is getting executed it gives me error like:

This field must be indexed to enforce unique values

How can I create this field unique? I have put Indexed='True' in the code. But it is not working.
Any help will be appreciated..

Answer 1

Try the following:

I am basically creating the field first and then setting the enforceUniqueValues property:

var fldCollection = oList.get_fields(); var f2 = context.castTo( accordionList.get_fields().addFieldAsXml("<Field Type='Number' DisplayName='AccordionOrder' Name='AccordionOrder' Required='True' />", true, SP.AddFieldOptions.addToDefaultContentType), SP.FieldNumber); f2.set_title("AccordionOrder"); f2.set_required(true); f2.set_indexed(true); f2.set_enforceUniqueValues(true); f2.update(); context.executeQueryAsync(onSuccessFieldAdd, onFail);