Hi everyone

I'm making a simple dropdown in the CMS based on Dataobject::get, but how can I push a default value into the dropdownmap?

This is how my dropdown looks now:

DataobjectResult1
DataobjectResult2
DataobjectResult3
etc...

But I would like to push in a default value in the beginning, like so:

None choosen
DataobjectResult1
DataobjectResult2
DataobjectResult3
etc...

Here's my code by the way:

$zoneDropdown = Dataobject::get("ItalyZonePage", "ParentID = $this->ParentID")->toDropdownMap("ID", "Title");
	 
	  
$fields->addFieldToTab("Root.Content.Main", new DropdownField(
	    	'ZoneID',
	    	'Vælg Zone',
	    	$zoneDropdown
	    	));

Hope someone can help, thanks!

Joel

If I understand you correctly, it would be the fourth argument:

$fields->addFieldToTab("Root.Content.Main", new DropdownField(
		'ZoneID',
		'Vælg Zone',
		$zoneDropdown,
		$value
       ));

See:
http://api.silverstripe.com/forms/fields-basic/DropdownField.html

HTH

Hi SilverRay

Well, not really. I want to push a new value into the array. The parameter you think of only determines which of the existing values will be default.

Any ideas?

Joel

Ah, I see what you mean. Perhaps you can push something into a new DataObjectSet, for an example see:

http://doc.silverstripe.com/doku.php?id=tutorial:3-forms

Scroll to where they talk about the function BrowserPollResults, so basically you would make a new one with ItalyZonePage's and then add something to it? If this doesn't do it, I wouldn't know...

I'm pretty sure the constructor allows you to specify a default null value and you can use that. It is the 6th parameter

DropdownField('SomeField', 'Some Field', $array, "DefaultValue", null, "Empty Value Title");

If you want to add a dataobject onto a dataobject set you can use $dataobject->push($object) to add a new one to the set but this is only if you want None choosen to be an object, really method #1 would work best and it would make the database value 'null'

Hi Willr and SilverRay

Thanks both for your help. Your solution, Willr, did the job, so many thanks.

Joel

Ok, a little question more.

How come, if the default is selected from the dropdown, I get an error, when I try to save the page in the CMS?