I populate a DropDownField automatically from an array as :

function getCMSFields() {

$fields = new FieldSet( new DropdownField(
    'CountryName',
    'Choose a country',
    Dataobject::get("country")->toDropdownMap("CountryName", "CountryName")
), ..etc ..
}

This works very well when 'country' already contains data. However I get an error when at init. there
is **no country** yet in the database.

I understand this is because Dataobject::get() is NULL and therefore the call to toDropdownMap fails.

So I tried to use a function which tests if 'country' is empty or not :

function CreateCountryList() {
   $myDataSet = DataObject::get("country");
   if (!$myDataSet) return false;
      else
      return $myDataSet->toDropdownMap("CountryName", "CountryName");      
}

$fields = new FieldSet( new DropdownField(
    'CountryName',
    'Choose a country',
    $this->CreateCountryList()
),
etc...

But with that, I can not properly create a country for the customer with the DOM. (i.e the entry is written in the DB but the DOM
does not display it in the table and returns the error messages :

ERROR [Warning]: Missing argument 3 for ComplexTableField_Item::__construct(), called in /home/www/xxx.com/dataobject_manager/code/DataObjectManager.php on line 584 and defined
IN POST /admin/getitem?ID=11&ajax=1
Line 980 in /home/www/xxx.com/sapphire/forms/ComplexTableField.php

I guess my CreateCountryList() is wrong so my question is ...how to create an empty DropDownField ?

I hope this is not too confusing ...

Thanks in advance for any tip,

Lise

PS. I am running SS 2.3.7 with the latest DOM ( March 23 )

Thank you very much for the tip : I used your code **and** I downloaded the 2.3 version of the DOM (I was running the 2.4 from the
Modules page ) and it works fine.
Thanks again - Lise