SilverStripe: changing the order of GridField input elements - php

Question

So, disclaimer first: I'm a bit of a noob when it comes to SilverStripe, but this one is vexxing me.
I'm using GridField to add and edit the entries in a DataObject. This is all well and good, and works perfectly. The only thing I can't figure out is how to change the order of the EDITABLE fields - this isn't the initial table display of the entries (which is set by $config), it's the actual input fields once you click "add new" or go to edit a record.
At the moment the Image uploadForm and the Signature <select> box are below the Body HTMLText field, which is messy and doesn't work right. I want them up the top, right below the Summary element.
I've tried playing around with changeFieldOrder(), but that doesn't work on a GridField object type and $fields doesn't know anything about the input elements (I dump()'ed it and had a look).
MediaReleaseItem.php:
class MediaReleaseItem extends DataObject {
static $db = array (
'Title' => 'Varchar',
'DateUpdated' => 'Date',
'Summary' => 'Varchar',
'Image' => 'Varchar',
'Body' => 'HTMLText',
);
private static $has_one = array(
"Image" => "Image",
"MediaReleaseItem" => "MediaReleases",
"Signature" => "MediaReleaseSignature",
);
}
And MediaReleases.php:
class MediaReleases extends Page {
private static $has_many = array(
"MediaReleaseItems" => "MediaReleaseItem",
"Signature" => "MediaReleaseSignature",
);
function getCMSFields() {
$fields = parent::getCMSFields();
$config = GridFieldConfig_RecordEditor::create();
$config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
'Title'=> 'Title',
'DateUpdated' => 'Date',
'Summary' => 'Summary',
));
$mediaReleasesField = new GridField(
'MediaReleaseItem', // Field name
'Media Releases', // Field title
$this->MediaReleaseItems(),
$config
);
$fields->addFieldToTab('Root.MediaReleaseItems', $mediaReleasesField);
return $fields;
}
}
(Signature is just another DataObject with a different GridField on a different tab, I didn't include the code for it because it's almost identical.)

Answer 1

so, you mean when you edit a MediaReleaseItem the fields are not the way you want then to be?
simple: just also define a method getCMSFields() on the class MediaReleaseItem.
<?php
class MediaReleaseItem extends DataObject {
private static $db = array (
'Title' => 'Varchar',
'DateUpdated' => 'Date',
'Summary' => 'Varchar',
'Image' => 'Varchar',
'Body' => 'HTMLText',
);
private static $has_one = array(
"Image" => "Image",
"MediaReleaseItem" => "MediaReleases",
"Signature" => "MediaReleaseSignature",
);
public function getCMSFields() {
$arrayOfSignatures = MediaReleaseSignature::get()->map()->toArray();
$fields = FieldList::create(array(
TextField::create('Title', 'Title for this Item'),
DateField::create('DateUpdated', 'Updated')->setConfig('showcalendar', true),
TextField::create('Image', 'Image'),
// not sure if it works to have both a DB field and a has_one with the same name
UploadField::create('ImageID', 'Image'),
DropdownField::create('Signature', 'Signature', $arrayOfSignatures),
// you can add more fields here
));
// but you can also add fields here
$fields->insertBefore(TextField::create('Summay', 'Summary'), 'DateUpdated');
$fields->push(HTMLEditorField::create('Body', 'Body Content'));
return $fields;
}
}