Set featured image size for a custom post type

Question

I have a custom post type, and I'm adding support for thumbnails (featured image)

        register_post_type('cp_companies', array(
            'labels' => array(
                'name' => __('Companies'),
                'singular_name' => __('Company')
            ),
            'public' => true,
            'has_archive' => true,
            'supports' => array('thumbnail', 'title', 'editor')
                )
        );

This is not a theme. This is a plug-in. What I want to do is simply limit (120x120) the size of the featured image.

Answer 1

From what I understand, you just want to have a thumb created at 120 x 120 when an image is uploaded using the new post type. Then use that image as the featured image on the custom post pages.

Just add a new image size

add_image_size( 'companies_thumb', 120, 120, true);

Then in the post type template for companies you just call the thumb you defined.

<?php the_post_thumbnail('companies_thumb'); ?>