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January 10, 2025 10:14
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Add a like button without a plugin in WordPress
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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' ) | |
)); | |
} | |
} |
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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(); | |
} | |
} |
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.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; | |
} |
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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; | |
}) |
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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; | |
} |
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Hi, how can I use it on the post on any page and blog page?
I've to try both (js and PHP functions ajax). But I got the error.
Please, share provide instruction on where the should be put the code and functions.
Many thanks!