How do you programmatically hide a field based on another field on a custom content type?

Question

I have built a custom content type that has a boolean field called 'Hide images'. There is also an images field that displays all images at the bottom of the node. I'd like to setup a way so that depending on the 'Hide images' field I can decide whether to display the images field. Is there a way to edit this via a template?

I saw in page--node--contenttype.tpl.php that I could render($page['content']); but I couldn't actually see how I could choose what content to display.

Answer 1

In your template, instead of rendering the entire content array, you can break it down to print each individual item separately. Then, you could wrap the printing of the images in a statement that checks if the boolean value is true/false.

<?php if ($content['field_boolean_hide_images'] === FALSE): ?>
  <?php print render($content['field_image']); ?>
<?php endif; ?>

This is just an example and shouldn't be used verbatim.

Also, to create a template for your content type, it would be node--yourContentType.tpl.php rather than a page template override.