__( 'Add content recomendations to your site.', 'algorithmia_widget_domain' ), )
);
}
// Creating widget front-end.
public function widget( $args, $instance ) {
// We only display on single post pages, not on the homepage, user pages, etc.
if ( is_single() == false ) {
return false;
}
$title = apply_filters( 'widget_title', $instance['title'] );
// Before and after widget arguments are defined by themes.
echo $args['before_widget'];
if ( ! empty( $title ) ) {
echo $args['before_title'] . $title . $args['after_title'];
}
// This is the Algorithmia API key.
$api_key = $instance['api_key'];
// This is the number of related pages we will request from the API.
$post_count = $instance['post_count'];
// We need the site name to prevent the display of the site name in the links that the Algorithmia API returns.
// Algorithmia API expects this as the content value in the meta tag. We pass this below.
$site_name = get_bloginfo('name', 'raw');
$name_no_spaces = str_replace(' ', '', $site_name);
if ( ! empty( $api_key ) ) {
echo '
';
echo $args['after_widget'];
}
}
// Widget form.
public function form( $instance ) {
$api_key = '';
// Handle title field.
if ( isset( $instance[ 'title' ] ) ) {
$title = $instance[ 'title' ];
}
else {
$title = __( 'Recommended Content', 'algorithmia_widget_domain' );
}
// Handle API Key Field.
if ( isset($instance['api_key']) ) {
$api_key = $instance['api_key'];
}
if ( !isset($instance['api_key']) ) {
$api_key = '';
}
// Handle Disable images field.
if ( isset($instance['disable_images'] ) ) {
$disable_images = $instance['disable_images'];
}
else {
$disable_images = false;
$disable_images = $instance['disable_images'];
}
// Hande disable summaries field.
if ( isset($instance['disable_summaries'] ) ) {
$disable_summaries = $instance['disable_summaries'];
}
else {
$disable_summaries = false;
$instance['disable_summaries'] = false;
}
// Handle disable subtitles field.
if ( isset($instance['disable_subtitles'] ) ) {
$disable_subtitles = $instance['disable_subtitles'];
}
else {
$disable_subtitles = false;
$instance['disable_subtitles'] = false;
}
// Handle post count field.
if ( isset($instance['post_count']) ) {
$post_count = $instance['post_count'];
}
if ( !isset($instance['post_count']) ) {
$post_count = 10;
$instance['post_count'] = 10;
}
// Widget admin form
?>
";
echo $output;
}
}
add_action( 'load-post.php', 'algorithmia_post_meta_boxes_setup' );
add_action( 'load-post-new.php', 'algorithmia_post_meta_boxes_setup' );
/* Create one or more meta boxes to be displayed on the post editor screen. */
function algorithmia_add_post_meta_boxes() {
$screens = array( 'post', 'page' );
foreach( $screens as $screen ) {
add_meta_box(
'algorithmia-post-options', // Unique ID
esc_html__( 'Recommender Options', 'example' ), // Title
'algorithmia_post_options_meta_box', // Callback function
$screen, // Admin page (or post type)
'side', // Context
'default' // Priority
);
}
}
/* Display the post meta box. */
function algorithmia_post_options_meta_box( $object, $box ) { ?>
size="30" />
post_type );
/* Check if the current user has permission to edit the post. */
if ( !current_user_can( $post_type->cap->edit_post, $post_id ) )
return $post_id;
/* Get the posted data and sanitize it for use as an HTML class. */
$new_meta_value = ( isset( $_POST['algorithmia-post-options'] ) );
echo print_r($new_meta_value, true);
/* Get the meta key. */
$meta_key = 'algorithmia_exclude_post';
/* Get the meta value of the custom field key. */
$meta_value = get_post_meta( $post_id, $meta_key, true );
/* If a new meta value was added and there was no previous value, add it. */
if ( $new_meta_value && '' == $meta_value )
add_post_meta( $post_id, $meta_key, $new_meta_value, true );
/* If the new meta value does not match the old value, update it. */
elseif ( $new_meta_value && $new_meta_value != $meta_value )
update_post_meta( $post_id, $meta_key, $new_meta_value );
/* If there is no new meta value but an old value exists, delete it. */
elseif ( '' == $new_meta_value && $meta_value )
delete_post_meta( $post_id, $meta_key, $meta_value );
}
/**
* Include CSS file to optionally hide recommendation images.
* We must hook into 'init' because by the time the widget loads, it's too late to load CSS files.
* This option is set in the widget UI by site admins.
*/
function algorithmia_register_css() {
// We first register all the styles. This does not enable them.
wp_register_style( 'algorithmia-disable-images', plugin_dir_url( __FILE__ ) . 'algorithmia-disable-images.css' );
wp_register_style( 'algorithmia-disable-summaries', plugin_dir_url( __FILE__ ) . 'algorithmia-disable-summaries.css' );
wp_register_style( 'algorithmia-disable-subtitles', plugin_dir_url( __FILE__ ) . 'algorithmia-disable-subtitles.css' );
// We check to see if the widget has been configured to disable each display option, then enqueue a unique style sheet for each.
$bool = get_option('algorithmia_disable_images');
if ( $bool == 1 ) {
wp_enqueue_style( 'algorithmia-disable-images' );
}
$bool2 = get_option('algorithmia_disable_summaries');
if ( $bool2 == 1 ) {
wp_enqueue_style( 'algorithmia-disable-summaries' );
}
$bool3 = get_option('algorithmia_disable_subtitles');
if ( $bool3 == 1 ) {
wp_enqueue_style( 'algorithmia-disable-subtitles' );
}
}
add_action( 'init', 'algorithmia_register_css' );