Creating a theme options page

I’m currently using Ian Stewart’s A Sample WordPress Theme Options Page trying to create an inputfield and two textareas.

Probably overlooking something somewhere I seem to be having some difficulties adding the second textarea.

Does someone know what I’m doing wrong perhaps?

Here’s the code I’m currently using:

<?php
add_action('admin_init', 'theme_options_init');
add_action('admin_menu', 'theme_options_add_page');
/**
 * Init plugin options to white list our options
 */
function theme_options_init() {
    register_setting('schema_options', 'schema_theme_options', 'theme_options_validate');
}

/**
 * Load up the menu page
 */
function theme_options_add_page() {
    add_theme_page(__('Theme Options', 'schema'), __('Theme Options', 'schema'), 'edit_theme_options', 'theme_options', 'theme_options_do_page');
}

/**
 * Create the options page
 */
function theme_options_do_page() {
    if (!isset($_REQUEST['settings-updated']))
    $_REQUEST['settings-updated'] = false;
    ?>

<div class="wrap">
    <?php echo "<h2>" . get_current_theme() . __(' Theme Options', 'schema') . "</h2>"; ?>
    <?php if (false !== $_REQUEST['settings-updated']): ?>
    <div class="updated fade">
        <p><strong><?php _e('Options saved', 'schema'); ?></strong></p>
    </div>
    <?php endif; ?>
    <form method="post" action="options.php">
        <?php settings_fields('schema_options'); ?>
        <?php $options = get_option('schema_theme_options'); ?>
        <table class="form-table">
            <?php
                /**
                 * A sample text input option
                 */
                ?>
            <tr valign="top">
                <th scope="row"><?php _e('Some text', 'schema'); ?></th>
                <td><input id="schema_theme_options[typekit]" class="regular-text" type="text" name="schema_theme_options[typekit]" value="<?php esc_attr_e($options['typekit']); ?>" />
                    <label class="description" for="schema_theme_options[typekit]">
                        <?php _e('Sample text input', 'schema'); ?>
                    </label></td>
            </tr>

            <?php
                /**
                 * A sample textarea option
                 */
                ?>
            <tr valign="top">
                <th scope="row"><?php _e('A textbox', 'schema'); ?></th>
                <td><textarea id="schema_theme_options[metadescription]" class="large-text" cols="50" rows="10" name="schema_theme_options[metadescription]"><?php echo esc_textarea($options['metadescription']); ?></textarea>
                    <label class="description" for="schema_theme_options[metadescription]">
                        <?php _e('Sample text box', 'schema'); ?>
                    </label></td>
            </tr>

            <?php
                /**
                 * A sample textarea option
                 */
                ?>
            <tr valign="top">
                <th scope="row"><?php _e('A textbox2', 'schema'); ?></th>
                <td><textarea id="schema_theme_options[homedescription]" class="large-text" cols="50" rows="10" name="schema_theme_options[homedescription]"><?php echo esc_textarea($options['homedescription']); ?></textarea>
                    <label class="description" for="schema_theme_options[homedescription]">
                        <?php _e('Sample tex2t box', 'schema'); ?>
                    </label></td>
            </tr>
        </table>
        <p class="submit">
            <input type="submit" class="button-primary" value="<?php _e('Save Options', 'schema'); ?>" />
        </p>
    </form>
</div>
<?php
}

/**
 * Sanitize and validate input. Accepts an array, return a sanitized array.
 */
function theme_options_validate($input) {
    // Say our text option must be safe text with no HTML tags
    $input['typekit'] = wp_filter_nohtml_kses($input['typekit']);
    // Say our textarea option must be safe text with the allowed tags for posts
    $input['metadescription'] = wp_filter_post_kses($input['metadescription']);
    $input['homedescription'] = wp_filter_post_kses($input['homedescription']);
    return $input;
}

Solutions Collecting From Web of "Creating a theme options page"

I checked out the code that you posted and didn’t find any issues. I then copied it into my theme’s functions.php, it worked for me. Both text areas appear, and data can be saved.

Not entirely sure if this would be the best way to answer my own question. As told by @goto10 and @maisdesign there is indeed nothing wrong with the code snippet above.

Above article however uses require_once to load the theme-options.php.
Using include_once(get_stylesheet_directory() . '/theme-options.php'); however solved the issue.