unclecheese/YourPage.php

## slideshow.js
const slides = JSON.parse($('body').data('slides'));
$('body').vegas({
  delay: 3000,
  timer: false,
  slides
});

## YourPage.php
<?php

class YourPage extends Page
{
  private static $has_one = [
      'Slideshow1' => 'Image',
      'Slideshow2' => 'Image',
      // etc..
  ];

  public function getCMSFields()
  {
    //....
  }

  public function getSlideURLs()
  {
      return Convert::array2json(array_map(function($num) {
        return $this->{'Slideshow'.$num}()->URL;
      }, range(1, 6)));
  }
}

class YourPage_Controller extends Page_Controller
{
}

## YourPage.ss
<body data-slides="$SlideURLs">
	const slides = JSON.parse($('body').data('slides'));
	$('body').vegas({
	delay: 3000,
	timer: false,
	slides
	});
	<?php

	class YourPage extends Page
	{
	private static $has_one = [
	'Slideshow1' => 'Image',
	'Slideshow2' => 'Image',
	// etc..
	];

	public function getCMSFields()
	{
	//....
	}

	public function getSlideURLs()
	{
	return Convert::array2json(array_map(function($num) {
	return $this->{'Slideshow'.$num}()->URL;
	}, range(1, 6)));
	}
	}

	class YourPage_Controller extends Page_Controller
	{
	}