I let my users chose an image for every page to use as a banner. But when someone has chosed an image from the assets folder, and then want to delete it (removes the banner) instead of just change it, the image is deleted from the folder, and from every other page.

How to just set the database field to zero, and don't remove the image?

/Johan

In 2.4 I at least found no no 'disableFileDelete' kind of option for the ImageField. But if you were to block the FileIframeField.js from the requirements, it would prevent the popup, and just immediately unattach the image, without deleting it (which seems not so bad, since you can always re-attach it if you wish).

So you could maybe extend the ImageField to 'BannerImageField', and override the function iframe() (copy it from the FileIFrame class) and block the FileIframeField.js from loading...

Other options:
- present a simple dropdown of banner names from the
- use a treedropdown
- use a radiogroup with banner-image thumbnails

Hope this helps - but I've not needed this before, so others might have far better solutions... :-)

Oh, thanks for more than one solution :)
I dont understand all of it...can I put the extended class in my mysite/code folder, and just write the function iframe(), like:

public function iframe() {
// clear the requirements added by any parent controllers
Requirements::clear();
Requirements::add_i18n_javascript('sapphire/javascript/lang');
Requirements::javascript(THIRDPARTY_DIR . '/prototype/prototype.js');
Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery.js');
//Requirements::javascript('sapphire/javascript/FileIFrameField.js');

Requirements::css('cms/css/typography.css');
Requirements::css('sapphire/css/FileIFrameField.css');

return $this->renderWith('FileIFrameField');
}

You se, I'm not a programmer :)

mysite/code/BannerImageField.php:

<?php 

class BannerImageField extends ImageField {
	public function iframe() {
		// clear the requirements added by any parent controllers
		Requirements::clear();
		Requirements::add_i18n_javascript('sapphire/javascript/lang');
		Requirements::javascript(THIRDPARTY_DIR . '/prototype/prototype.js');
		Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery.js');
		//Requirements::javascript('sapphire/javascript/FileIFrameField.js');
		
		Requirements::css('cms/css/typography.css');
		Requirements::css('sapphire/css/FileIFrameField.css');
		
		return $this->renderWith('FileIFrameField');
	}
}

And in your Pages/Objects getCMSFields():

$imageField = new BannerImageField( ... 

works, tested it :-)

Thanks, worked for me too.