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Customizing dropdownfield
4 July 2009 at 6:20pm
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
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Re: Customizing dropdownfield
4 July 2009 at 7:00pm
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.htmlHTH
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Re: Customizing dropdownfield
4 July 2009 at 8:06pm
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
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Re: Customizing dropdownfield
4 July 2009 at 8:35pm
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...
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Re: Customizing dropdownfield
4 July 2009 at 9:31pm
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'
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Re: Customizing dropdownfield
5 July 2009 at 8:54am
Hi Willr and SilverRay
Thanks both for your help. Your solution, Willr, did the job, so many thanks.
Joel
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Re: Customizing dropdownfield
5 July 2009 at 6:23pm
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?
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