Hello there!

I'm trying to build a simple image gallery.

I created an GalleryImage DataObject that has a has_one relation to GalleryPage. I would like to be able to specify a folder name that is formed from the id and / or name of the related GalleryPage.

I know I can set the folder with

$uploadField->setFolderName('my_folder');

However…how do I access the properties of the related page in this context?

<?php

class BikeImage extends DataObject {

    const TITLE_NAME = 'Title';
    const SORT_ORDER_NAME = 'SortOrder';

    private static $db = array(
        self::TITLE_NAME => 'Varchar',
        self::SORT_ORDER_NAME => 'Int',
    );

    // One-to-one relationship with bike page
    private static $has_one = array(
        'Image' => 'Image',
        'GalleryPage' => 'GalleryPage'
    );

    public function getCMSFields() {
        $fields = parent::getCMSFields();

        $fields->removeFieldFromTab('Root.Main', 'GalleryPageID');

        $custom_folder_name = 'default';

        // $custom_folder_name = name / id of related gallery page
        // how to access the properties of the related gallery page?

        $uploadField = new UploadField('Image', _t('general.image', 'image'));
        $uploadField->setFolderName($custom_folder_name);
        $fields->addFieldToTab('Root.Main', $uploadField);

        return $fields;
    }

    // Tell the data grid what fields to show in the table
    private static $summary_fields = array(
        'ID' => 'ID',
        self::TITLE_NAME => 'Title'
    );

}

Thx for any pointers!

$this->GalleryPage() returns the object the has_one relates to.

Thanks…however

$this->GalleryPage()

does return an object, but its ID is zero.

Could it be that the ID is only known after the record is saved?