post-meta-functions.php

<?php
add_action("admin_init", "add_pop_meta_box");

//Add the Meta Box only to our template page
function add_pop_meta_box(){
    $post_id = isset( $_GET['post'] ) ? $_GET['post'] : 0 ;
    if($post_id) {
        $template_file = get_post_meta($post_id,'_wp_page_template',TRUE);
        if ($template_file == 'page-pop.php') {
            add_meta_box("pageofposts", "Page of Posts", "pop_meta_options", "page", "side", "core");
        } else {
            $meta = get_post_meta($post_id, '_cat_id', true);
            if( $meta ) {
                pop_update_post_meta($post_id, '_cat_id', '');
                pop_update_post_meta($post_id, '_page_title', '');
                pop_update_post_meta($post_id, '_posts_title', '');
                pop_update_post_meta($post_id, '_order_by', '');
                pop_update_post_meta($post_id, '_asc', '');
                pop_update_post_meta($post_id, '_post_count', '');
                pop_update_post_meta($post_id, '_list_style', '');
                pop_update_post_meta($post_id, '_days', '');
                remove_meta_box("pageofposts","page","side");
            }
        }
    }
    add_action('save_post', 'update_pop_meta');
}

//Build the select arrays!
$order_list = array(
    'none' => array( 'value' => 'none','label' => 'None' ),
    'id' => array( 'value' => 'ID','label' => 'Post ID' ),
    'author' => array( 'value' => 'author','label' => 'Author' ),
    'title' => array( 'value' => 'title','label' => 'Post Title' ),
    'date' => array( 'value' => 'date', 'label' => 'Post Date'  ),
    'modified' => array( 'value' => 'modified','label' => 'Modified Date' ),
    'parent' => array( 'value' => 'parent','label' => 'Parent Post' ),
    'rand' => array( 'value' => 'rand','label' => 'Random' ),
    'comment_count' => array( 'value' => 'comment_count','label' => 'Comment Count' ),
    'menu_order' => array( 'value' => 'menu_order','label' => 'Menu Order' ),
);

$post_styles = array(
    'default' => array( 'value' => 'default','label' => 'Default' ),
    'excerpt' => array( 'value' => 'excerpt','label' => 'Excerpts' ),
    'title-only' => array( 'value' => 'title-only','label' => 'Titles Only' ),
    'thumb-excerpt' => array( 'value' => 'thumb-excerpt','label' => 'Thumbnails and Excerpts' ),
);

$sort = array(
    'DESC' => array( 'value' => 'DESC','label' => 'Descending' ),
    'ASC' => array( 'value' => 'ASC','label' => 'Ascending' ),
);

function pop_meta_options(){

    $post_id =  !empty($_GET['post']) ? $_GET['post'] : 0;
    if( !$post_id ) return;

    $template_file = get_post_meta($post_id,'_wp_page_template',TRUE);
    if ($template_file != 'page-pop.php') return;

    global $order_list,$post_styles,$sort;
    $categories = get_categories();

    //See if we have any values
    $post_meta=array();
    $post_meta = get_post_meta( $post_id,false );

    $cat_id = isset( $post_meta['_cat_id'] ) ? $post_meta['_cat_id'][0] : 1;
    $page_title = isset( $post_meta['_page_title'] ) && $post_meta['_page_title'] ? $post_meta['_page_title'][0] : '';
    $posts_title = isset( $post_meta['_posts_title'] ) && $post_meta['_posts_title'] ? $post_meta['_posts_title'][0] : '';
    $order_by = isset( $post_meta['_order_by'] ) ? $post_meta['_order_by'][0] : 'date';
    $asc = isset( $post_meta['_asc'] ) ? $post_meta['_asc'][0] : 'DESC';
    $list_style =  isset( $post_meta['_list_style'] ) ? $post_meta['_list_style'][0] : 'default';
    $post_count = isset( $post_meta['_post_count'] ) ? $post_meta['_post_count'][0] : get_option('posts_per_page');
    if(!$post_count || !is_numeric( $post_count )) $post_count = get_option('posts_per_page');
    $days = isset( $post_meta['_days'] ) ? $post_meta['_days'][0] : '0';
    if($days && !is_numeric( $days )) $days = '0';
    ?>

    <!-- Start page of posts meta box -->
    <div class="inside">
    <p><label><strong><?php _e( 'Page Title', 'pageofposts' ); ?></strong></label></p>
    <input id="_page_title" name="_page_title" type="text" style="width: 98%;" value="<?php echo $page_title; ?>"/>

    <p><label><strong><?php _e( 'Posts Title', 'pageofposts' ); ?></strong></label></p>
    <input id="_posts_title" name="_posts_title" type="text" style="width: 98%;" value="<?php echo $posts_title; ?>"/>

    <p><label><strong><?php _e("Category")?></strong></label></p>
    <select id="_cat_id" name="_cat_id">
<?php
    //Category List
    foreach ($categories as $cat) :
        $selected = ( $cat->cat_ID == $cat_id ) ? ' selected = "selected" ' : '';
        $option = '<option '.$selected .'value="' . $cat->cat_ID;
        $option = $option .'">';
        $option = $option .$cat->cat_name;
        $option = $option .'</option>';
        echo $option;
    endforeach;
?>
    </select>

    <p><label><strong><?php _e("Sort by")?></strong></label></p>
    <select id="_order_by" name="_order_by">
<?php
    foreach ($order_list as $output) :
        $selected = ( $output['value'] == $order_by ) ? ' selected = "selected" ' : '';
        $option = '<option '.$selected .'value="' . $output['value'];
        $option = $option .'">';
        $option = $option .$output['label'];
        $option = $option .'</option>';
        echo $option;
    endforeach;
?>
    </select>

    <p><label><strong><?php _e("Order")?><strong></label></p>
    <select id="_asc" name="_asc">
<?php
    foreach ($sort as $output) :
        $selected = ( $output['value'] == $asc ) ? ' selected = "selected" ' : '';
        $option = '<option '.$selected .'value="' . $output['value'];
        $option = $option .'">';
        $option = $option .$output['label'];
        $option = $option .'</option>';
        echo $option;
    endforeach;
?>
    </select>

    <p><label><strong><?php _e("Posts Style")?><strong></label></p>
    <select id="_list_style" name="_list_style">
<?php
    foreach ($post_styles as $output) :
        $selected = ( $output['value'] == $list_style ) ? ' selected = "selected" ' : '';
        $option = '<option '.$selected .'value="' . $output['value'];
        $option = $option .'">';
        $option = $option .$output['label'];
        $option = $option .'</option>';
        echo $option;
    endforeach;
?>
    </select>

    <p><strong><label><?php _e( 'Posts per Page', 'pageofposts' ); ?><strong></label></p>
    <input id="_post_count" name="_post_count" type="text" value="<?php echo $post_count; ?>" size="3" />

    <p><strong><label><?php _e( 'Posts in the last days', 'pageofposts' ); ?><strong></label></p>
    <input id="_days" name="_days" type="text" value="<?php echo $days; ?>" size="3" />
    </div>
    <!-- End page of posts meta box -->
    <?php
}
function update_pop_meta( $post_id ){

    if ( empty( $_POST ) ) {
        return;
    } else {
        $template_file = get_post_meta($post_id,'_wp_page_template',TRUE);
        if ($template_file != 'page-pop.php') return;

        if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) {
            return $post_id;
        } else {
            if ( $_POST['post_type'] == 'page' ) {
                if ( !current_user_can( 'edit_page', $post_id ) )
                  return $post_id;
            } else {
                if ( !current_user_can( 'edit_post', $post_id ) )
                  return $post_id;
            }
            $meta = isset( $_POST['_cat_id'] ) ? $_POST['_cat_id'] : 1;
            pop_update_post_meta($post_id, '_cat_id', $meta);
            $meta = isset( $_POST['_page_title'] ) ? $_POST['_page_title'] : '';
            pop_update_post_meta($post_id, '_page_title', $meta);
            $meta = isset( $_POST['_posts_title'] ) ? $_POST['_posts_title'] : '';
            pop_update_post_meta($post_id, '_posts_title', $meta);
            $meta = isset( $_POST['_order_by'] ) ? $_POST['_order_by'] : 'date';
            pop_update_post_meta($post_id, '_order_by', $meta);
            $meta = isset( $_POST['_asc'] ) ? $_POST['_asc'] : 'DESC';
            pop_update_post_meta($post_id, '_asc', $meta);
            $meta = isset( $_POST['_list_style'] ) ? $_POST['_list_style'] : 'default';
            pop_update_post_meta($post_id, '_list_style', $meta);
            $meta = isset( $_POST['_post_count'] ) ? $_POST['_post_count'] : get_option('posts_per_page');
            pop_update_post_meta($post_id, '_post_count', $meta);
            $meta = isset( $_POST['_days'] ) ? $_POST['_days'] : 0;
            pop_update_post_meta($post_id, '_days', $meta);
            return;
        }
    }
}

function pop_update_post_meta($post_id, $key, $data) {
    $post_meta = get_post_meta($post_id, $key, true);
    if( $data != '' && $post_meta != $data) {
        update_post_meta($post_id, $key, $data);
    } elseif ( $post_meta != '' && $data == '' ) {
        delete_post_meta($post_id, $key);
    }
}
?>