Here's raw code for the DIY people.
/** Add New Field To Category **/
function extra_category_fields( $tag ) {
$t_id = $tag->term_id;
$cat_meta = get_option( "category_$t_id" );
?>
<tr class="form-field">
<th scope="row" valign="top"><label for="meta-content"><?php _e('Landing Page Content'); ?></label></th>
<td>
<div id="catContent">
<style type="text/css">.form-field input {width: auto!important;}</style>
<?php wp_editor($cat_meta['content'], 'cat_landing', array(
'textarea_name' => 'cat_meta[content]',
'textarea_rows' => 15,
)); ?>
</div>
<span class="description"><?php _e('Landing Page Content, Edit This Like You Would A Page.'); ?></span>
</td>
</tr>
<?php
}
add_action('category_edit_form_fields','extra_category_fields');
/** Save Category Meta **/
function save_extra_category_fileds( $term_id ) {
global $wpdb;
if ( isset( $_POST['cat_meta'] ) ) {
$t_id = $term_id;
$cat_meta = get_option( "category_$t_id");
$cat_keys = array_keys($_POST['cat_meta']);
foreach ($cat_keys as $key){
if (isset($_POST['cat_meta'][$key])){
$cat_meta[$key] = $_POST['cat_meta'][$key];
}
}
update_option( "category_$t_id", $cat_meta );
}
}
add_action ( 'edited_category', 'save_extra_category_fileds');
With these you can actually do more, such as adding an ordering field or whatever your heart desires.
In the action call you can change:
add_action('category_edit_form_fields','extra_category_fields');
to your specific
taxonomy by changing category to your taxonomy name as so:
add_action('YOUR-TAX-HERE_edit_form_fields','extra_category_fields');
add_action ( 'edited_YOUR-TAX-HERE', 'save_extra_category_fileds');
Finally to get your meta content you can use this:
$category_id = get_cat_ID();
if($category_id != 0){
$cat_meta = get_option( "category_$category_id");
echo apply_filters('the_content', $cat_meta['content']);
}