AppsCDN · October 30, 2019 16:30 · Aug 23, 2015 · Aug 23, 2015
diff --git a/like-it-enqueue.php b/like-it-enqueue.php
@@ -0,0 +1,16 @@
+add_action( 'wp_enqueue_scripts', 'pt_like_it_scripts' );
+function pt_like_it_scripts() {
+    if( is_single() ) {
+
+        wp_enqueue_style( 'like-it', trailingslashit( plugin_dir_url( __FILE__ ) ).'css/like-it.css' );
+
+        if (!wp_script_is( 'jquery', 'enqueued' )) {
+            wp_enqueue_script( 'jquery' );// Comment this line if you theme has already loaded jQuery
+        }
+    wp_enqueue_script( 'like-it', trailingslashit( plugin_dir_url( __FILE__ ) ).'js/like-it.js', array('jquery'), '1.0', true );
+
+        wp_localize_script( 'like-it', 'likeit', array(
+            'ajax_url' => admin_url( 'admin-ajax.php' )
+        ));
+    }
+}
diff --git a/like-it-function.php b/like-it-function.php
@@ -0,0 +1,23 @@
+add_action( 'wp_ajax_nopriv_pt_like_it', 'pt_like_it' );
+add_action( 'wp_ajax_pt_like_it', 'pt_like_it' );
+function pt_like_it() {
+
+    if ( ! wp_verify_nonce( $_REQUEST['nonce'], 'pt_like_it_nonce' ) || ! isset( $_REQUEST['nonce'] ) ) {
+        exit( "No naughty business please" );
+    }
+
+    $likes = get_post_meta( $_REQUEST['post_id'], '_pt_likes', true );
+    $likes = ( empty( $likes ) ) ? 0 : $likes;
+    $new_likes = $likes + 1;
+
+    update_post_meta( $_REQUEST['post_id'], '_pt_likes', $new_likes );
+
+    if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
+        echo $new_likes;
+        die();
+    }
+    else {
+        wp_redirect( get_permalink( $_REQUEST['post_id'] ) );
+        exit();
+    }
+}
diff --git a/like-it-style.css b/like-it-style.css
@@ -0,0 +1,47 @@
+.pt-like-it {
+    display: inline-block;
+    position: relative;
+    height: 38px;
+    line-height: 38px;
+    padding: 0 16px;
+    outline: 0;
+    color: #57ad68;
+    background: rgba(0,0,0,0);
+    font-size: 14px;
+    text-align: center;
+    text-decoration: none;
+    cursor: pointer;
+    border: 1px solid #a9d8b2;
+    vertical-align: bottom;
+    white-space: nowrap;
+    text-rendering: auto;
+    -webkit-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+    box-sizing: border-box;
+    border-radius: 999em;
+    letter-spacing: -0.02em;
+    font-weight: 400;
+    font-style: normal;
+    text-rendering: optimizeLegibility;
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale;
+    -moz-font-feature-settings: "liga" on;
+}
+.pt-like-it:hover,
+.pt-like-it:hover a {
+    border-color: #57ad68;
+    color: #468c54;
+}
+.pt-like-it > a.like-button {
+    border: none;
+}
+.pt-like-it .like-button:before {
+    font: normal normal normal 14px/1 FontAwesome;
+    content: '\f087';
+    margin-right: 3px;
+}
+.pt-like-it .like-count {
+    padding-left: 10px;
+}
diff --git a/like-it.js b/like-it.js
@@ -0,0 +1,19 @@
+jQuery( document ).on( 'click', '.pt-like-it', function() {
+    var post_id = jQuery(this).find('.like-button').attr('data-id'),
+        nonce = jQuery(this).find('.like-button').attr("data-nonce");
+
+    jQuery.ajax({
+        url : likeit.ajax_url,
+        type : 'post',
+        data : {
+            action : 'pt_like_it',
+            post_id : post_id,
+            nonce : nonce
+        },
+        success : function( response ) {
+            jQuery('#like-count-'+post_id).html( response );
+        }
+    });
+
+    return false;
+})
diff --git a/like-it.php b/like-it.php
@@ -0,0 +1,19 @@
+add_filter( 'the_content', 'like_it_button_html', 99 );
+
+function like_it_button_html( $content ) {
+    $like_text = '';
+    if ( is_single() ) {
+        $nonce = wp_create_nonce( 'pt_like_it_nonce' );
+        $link = admin_url('admin-ajax.php?action=pt_like_it&post_id='.$post->ID.'&nonce='.$nonce);
+        $likes = get_post_meta( get_the_ID(), '_pt_likes', true );
+        $likes = ( empty( $likes ) ) ? 0 : $likes;
+        $like_text = '
+                    <div class="pt-like-it">
+                        <a class="like-button" href="'.$link.'" data-id="' . get_the_ID() . '" data-nonce="' . $nonce . '">' . 
+                        __( 'Like it' ) .
+                        '</a>
+                        <span id="like-count-'.get_the_ID().'" class="like-count">' . $likes . '</span>
+                    </div>';
+    }
+    return $content . $like_text;
+}