Image.php

<?php

// Add to framework/model/Image.php
// Ensures all Image URLs have a cachebuster appended so when an image is replaced (same file name), the correct image appears in the browser.

public function getURL() {
	$LastEdited = $this->LastEdited;
	if (!$LastEdited) {
		$Original = File::find($this->getFilename());
		if (!$Original || !$Original->LastEdited) return parent::getURL();
		$LastEdited = $Original->LastEdited;
	}
	return parent::getURL().'?'.preg_replace('/[^0-9]+/i','',$LastEdited);
}