display custom taxonomy column on custom post add new page

Would someone be able to tell me where I am going wrong. I am trying to get the custom category ‘Cat Breed’ to display in the Add New column of a custom post I created called ‘Kittens’.

I can get the new column heading to display but the actual categories wont display when assigned to a post. I have tried a few different ways of doing this and each time get the same result – column heading displays fine but actual category types such as Long Hair, Short Hair etc that I apply to a post wont show. NOTE: Just test names at the moment till I figure out the code!

Here is the code I have used for just this part:

add_filter("manage_edit-kittens_columns", "add_new_kitten_columns");
add_action("manage_kitten_custom_column",  "kitten_custom_columns");

function add_new_kitten_columns($defaults) {
    $defaults['cat_breed_cats'] = __('Cat Breed');
    return $defaults;
}
function kitten_custom_columns( $column_name, $post_id ) {
    if( $column_name == 'cat_breed_cats' ) {
        $_taxonomy = 'cat-breed';
        $terms = get_the_terms( $post_id, $_taxonomy );
        if ( !empty( $terms ) ) {
            $out = array();
            foreach ( $terms as $c )
                $out[] = "<a href='edit-tags.php?action=edit&taxonomy=$_taxonomy&post_type=kittens&tag_ID={$c->term_id}'> " . esc_html(sanitize_term_field('name', $c->name, $c->term_id, 'category', 'display')) . "</a>";
            echo join( ', ', $out );
        }
        else {
            _e('Uncategorized');
        }
    }
}

And here is the complete code:

// kitten post type
add_action('init', 'post_type_kittens');
function post_type_kittens() {
register_post_type('kittens',
    array(
        'description' => __('Create a kitten.'),
        'label' => __('Kittens'),
        'supports' => array ('title', 'editor', 'thumbnail', 'excerpt', 'custom-fields'),
        'register_meta_box_cb' => 'add_kittens_metaboxes',
        'public' => true,
        'show_ui' => true));
register_taxonomy_for_object_type('cat_breed', 'kittens');
register_taxonomy_for_object_type('litter_types', 'kittens');
}                

// Custom Taxonomy Code
add_action( 'init', 'create_kittens_tax', 0 );

function create_kittens_tax() {
register_taxonomy( 'cat_breed', 'post',
    array(
        'hierarchical' => true,
        'label' => 'Cat Breed',
        'query_var' => true,
        'rewrite' => true ) );
register_taxonomy( 'litter_types', 'post',
    array(
        'hierarchical' => true,
        'label' => 'Litter Types',
        'query_var' => true,
        'rewrite' => true ) );
}

// Add kitten meta boxes
$prefix = 'dbt_';

$meta_box = array(
    'id' => 'my-meta-box',
    'title' => 'Custom meta box',
    'page' => 'kittens',
    'context' => 'normal',
    'priority' => 'high',
    'fields' => array(
        array(
            'name' => 'Text box',
            'desc' => 'Enter something here',
            'id' => $prefix . 'text',
            'type' => 'text',
            'std' => 'Default value 1'
        ),
        array(
            'name' => 'Textarea',
            'desc' => 'Enter big text here',
            'id' => $prefix . 'textarea',
            'type' => 'textarea',
            'std' => 'Default value 2'
        ),
        array(
            'name' => 'Select box',
            'id' => $prefix . 'select',
            'type' => 'select',
            'options' => array('Option 1', 'Option 2', 'Option 3')
        ),
        array(
            'name' => 'Radio',
            'id' => $prefix . 'radio',
            'type' => 'radio',
            'options' => array(
                array('name' => 'Name 1', 'value' => 'Value 1'),
                array('name' => 'Name 2', 'value' => 'Value 2')
            )
        ),
        array(
            'name' => 'Checkbox',
            'id' => $prefix . 'checkbox',
            'type' => 'checkbox'
        )
    )
);

add_action('admin_menu', 'mytheme_add_box');

// Add meta box
function mytheme_add_box() {
    global $meta_box;

    add_meta_box($meta_box['id'], $meta_box['title'], 'mytheme_show_box', $meta_box['page'], $meta_box['context'], $meta_box['priority']);
}

// Callback function to show fields in meta box
function mytheme_show_box() {
    global $meta_box, $post;

    // Use nonce for verification
    echo '<input type="hidden" name="mytheme_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';

    echo '<table class="form-table">';

    foreach ($meta_box['fields'] as $field) {
        // get current post meta data
        $meta = get_post_meta($post->ID, $field['id'], true);

        echo '<tr>',
                '<th style="width:20%"><label for="', $field['id'], '">', $field['name'], '</label></th>',
                '<td>';
        switch ($field['type']) {
            case 'text':
                echo '<input type="text" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />',
                    '<br />', $field['desc'];
                break;
            case 'textarea':
                echo '<textarea name="', $field['id'], '" id="', $field['id'], '" cols="60" rows="4" style="width:97%">', $meta ? $meta : $field['std'], '</textarea>',
                    '<br />', $field['desc'];
                break;
            case 'select':
                echo '<select name="', $field['id'], '" id="', $field['id'], '">';
                foreach ($field['options'] as $option) {
                    echo '<option', $meta == $option ? ' selected="selected"' : '', '>', $option, '</option>';
                }
                echo '</select>';
                break;
            case 'radio':
                foreach ($field['options'] as $option) {
                    echo '<input type="radio" name="', $field['id'], '" value="', $option['value'], '"', $meta == $option['value'] ? ' checked="checked"' : '', ' />', $option['name'];
                }
                break;
            case 'checkbox':
                echo '<input type="checkbox" name="', $field['id'], '" id="', $field['id'], '"', $meta ? ' checked="checked"' : '', ' />';
                break;
        }
        echo     '<td>',
            '</tr>';
    }

    echo '</table>';
}

add_action('save_post', 'mytheme_save_data');

// Save data from meta box
function mytheme_save_data($post_id) {
    global $meta_box;

    // verify nonce
    if (!wp_verify_nonce($_POST['mytheme_meta_box_nonce'], basename(__FILE__))) {
        return $post_id;
    }

    // check autosave
    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
        return $post_id;
    }

    // check permissions
    if ('page' == $_POST['post_type']) {
        if (!current_user_can('edit_page', $post_id)) {
            return $post_id;
        }
    } elseif (!current_user_can('edit_post', $post_id)) {
        return $post_id;
    }

    foreach ($meta_box['fields'] as $field) {
        $old = get_post_meta($post_id, $field['id'], true);
        $new = $_POST[$field['id']];

        if ($new && $new != $old) {
            update_post_meta($post_id, $field['id'], $new);
        } elseif ('' == $new && $old) {
            delete_post_meta($post_id, $field['id'], $old);
        }
    }
}

add_filter("manage_edit-kittens_columns", "add_new_kitten_columns");
add_action("manage_kitten_custom_column",  "kitten_custom_columns");

function add_new_kitten_columns($defaults) {
    $defaults['cat_breed_cats'] = __('Cat Breed');
    return $defaults;
}
function kitten_custom_columns( $column_name, $post_id ) {
    if( $column_name == 'cat_breed_cats' ) {
        $_taxonomy = 'cat-breed';
        $terms = get_the_terms( $post_id, $_taxonomy );
        if ( !empty( $terms ) ) {
            $out = array();
            foreach ( $terms as $c )
                $out[] = "<a href='edit-tags.php?action=edit&taxonomy=$_taxonomy&post_type=kittens&tag_ID={$c->term_id}'> " . esc_html(sanitize_term_field('name', $c->name, $c->term_id, 'category', 'display')) . "</a>";
            echo join( ', ', $out );
        }
        else {
            _e('Uncategorized');
        }
    }
}

Thanks so much – have spent the past two days trying to figure this out and am at a total loss as to where to look next.