Silverstripe 3.1 - Export Dataobject with all relations? - php

Question

I need to export the whole data of an dataobject. Database fields and relations.
private static $db = array (
'URLSegment' => 'Varchar(255)',
'SKU' => 'Text',
'Title' => 'Text',
'Price' => 'Text',
'Content' => 'HTMLText',
'ItemConfig' => 'Int',
'Priority' => 'Int'
);
private static $has_one = array (
'Visual' => 'Image'
);
private static $has_many = array (
'Sizes' => 'ShopItem_Size',
'Colors' => 'ShopItem_Color'
);
private static $many_many = array (
'Visuals' => 'Image',
'Categories' => 'ShopCategory'
);
I added everything to getExportFields(). But as expected the result for the relations is "ManyManyList" or "HasManyList"
public function getExportFields() {
return array(
'SKU' => 'SKU',
'Title' => 'Title',
'Price' => 'Price',
'Content' => 'Content',
'ItemConfig' => 'ItemConfig',
'Visual' => 'Visual',
'Visuals' => 'Visuals',
'Sizes' => 'Sizes',
'Colors' => 'Colors',
'Categories' => 'Categories'
);
}
Is it possible to create such an export?
Thank you in advance

Answer 1

You can use any method name instead of a field/relation name in the exportFields array.
In your ModelAdmin class
public function getExportFields() {
return array(
'SKU' => 'SKU',
'Title' => 'Title',
'CategoryNames' => 'Categories'
);
}
and just have a method with that name on the DataObject, returning the relation data as a string:
public function CategoryNames(){
$catNames = array();
foreach($this->Categories() as $cat){
$catNames[] = $cat->getField('Title');
}
//use a separator that won't break the CSV file
return join("; ", $catNames);
}
I think this is even way better than the modeladmin creating magic fields in your CSV file,
that would make it inconsistent...