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ajax-featured-posts.php
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ajax-featured-posts.php
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<?php
/**
* Plugin Name: AJAX Featured Posts
* Plugin URI: http://.tutsplus.com/tutorials/make-featured-posts-using-ajax--cms-25375
* Description: A Plugin to make posts featured using AJAX
* Version: 1.0.0
* Author: Mayeenul Islam
* Author URI: http://nanodesignsbd.com/
* Text Domain: ajax-featured-posts
*/
// If this file is called directly, abort.
if ( ! defined( 'ABSPATH' ) ) {
die;
}
/**
* Loading Necessary Scripts
*
* Loading styles and javascripts in Admin Panel.
* --------------------------------------------------------------------------
*/
function afp_admin_scripts() {
$screen = get_current_screen();
if ( 'post' === $screen->post_type ) {
wp_enqueue_style( 'afp-styles', plugins_url('/assets/css/ajax-featured-posts.css', __FILE__) );
wp_enqueue_script( 'afp-scripts', plugins_url( '/assets/js/ajax-featured-posts.js', __FILE__ ), array('jquery'), '', true );
}
}
add_action( 'admin_enqueue_scripts', 'afp_admin_scripts' );
/**
* Meta Field specifics
* --------------------------------------------------------------------------
*/
function afp_featured_specifics() {
global $post;
$post_id = $post->ID;
if( 'post' === $post->post_type ) :
// Use nonce for verification
wp_nonce_field( basename( __FILE__ ), 'afp_featured_nonce' );
// Fetch database content
$featured = get_post_meta( $post_id , 'featured' , true );
if( $featured && 'yes' === $featured ) {
$featured_class = ' featured';
$featured_icon = ' dashicons-star-filled';
} else {
$featured_class = '';
$featured_icon = ' dashicons-star-empty';
}
echo '<div class="misc-pub-section featuring-post misc-pub-featured">';
echo '<label><input type="checkbox" name="afp_featured_post" value="yes" '. checked( $featured, 'yes', false ) .'>';
echo ' <strong class="featured-text">'. __( 'FEATURE THIS POST', 'ajax-featured-posts' ) .'</strong></label>';
echo '</div>';
endif;
}
add_action( 'post_submitbox_misc_actions', 'afp_featured_specifics' );
function afp_save_featured_meta_data( $post_id ) {
// verify nonce
if (!isset($_POST['afp_featured_nonce']) || !wp_verify_nonce($_POST['afp_featured_nonce'], basename(__FILE__)))
return $post_id;
// check autosave
if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
return $post_id;
// check permissions
if ( 'post' === $_POST['post_type'] && !current_user_can('edit_posts', $post_id) )
return $post_id;
// form posting
$featured = $_POST['afp_featured_post'];
// data in database
$fetched_data = get_post_meta( $post_id, 'featured', true );
// doing the update or delete the key
if( $featured && $featured != $fetched_data )
update_post_meta( $post_id, 'featured', esc_html($featured) );
elseif( empty($featured) )
delete_post_meta( $post_id, 'featured' );
elseif( empty($featured) && empty($fetched_data) )
delete_post_meta( $post_id, 'featured' );
}
add_action( 'save_post', 'afp_save_featured_meta_data' );
add_action( 'new_to_publish', 'afp_save_featured_meta_data' );
/**
* Add more columns to the Post table.
*
* @param array $columns Default columns.
* @return array Modified columns.
* --------------------------------------------------------------------------
*/
function afp_post_columns( $columns ) {
$new_columns = array(
'featured' => __( 'Featured', 'ajax-featured-posts' )
);
return array_merge( $columns, $new_columns );
}
add_filter( 'manage_post_posts_columns', 'afp_post_columns' );
/**
* Populate the columns with the respective data.
*
* @param array $column Default columns.
* @param integer $post_id That particular post_ID.
* --------------------------------------------------------------------------
*/
function afp_post_table_columns_data( $column, $post_id ) {
switch ( $column ) {
case 'featured':
$featured = get_post_meta( $post_id , 'featured' , true );
if( $featured && 'yes' === $featured ) {
$featured_class = ' featured';
$featured_icon = ' dashicons-star-filled';
} else {
$featured_class = '';
$featured_icon = ' dashicons-star-empty';
}
echo '<span id="'. $post_id .'" class="make-featured'. $featured_class .'"><i class="dashicons'. $featured_icon .'"></i></span>';
break;
}
}
add_action( 'manage_post_posts_custom_column', 'afp_post_table_columns_data', 10, 2 );
/**
* Managing featured post AJAX call
*
* Get the AJAX call and process it via WordPress Functions.
* --------------------------------------------------------------------------
*/
function afp_make_featured_ajax_callback() {
if( isset( $_POST['id'] ) ) {
global $project_prefix;
$post_id = (int) $_POST['id'];
//grabbing existing data to delete
$db_data = get_post_meta( $post_id, 'featured', true );
if( $db_data ) {
delete_post_meta( $post_id, 'featured' );
echo 'deleted';
die;
}
else {
update_post_meta( $post_id, 'featured', 'yes' );
echo 'added';
die;
}
} else {
echo false;
die;
}
}
add_action( 'wp_ajax_afp_make_featured', 'afp_make_featured_ajax_callback' ); //for logged in users only