Google の評価スニペットを表示する Wordpress プラグインがあります。1.0 - 5.0 で、評価の直後に選択した値の画像を追加したいのですが、そうではありません。
これまでのところ、画像をロードすることはできましたが、必要な場所に表示されず、そこが立ち往生しています。
これが私が追加しようとしたものです：
if ($rating == "5.0"){ print("<IMG SRC ="stars/5-0.png>");}
プラグインコードは次のとおりです。
<?php
$prefix = 'pk_rs_';
DEFINE ('PK_RS_DEFAULT_RATING', '-');
DEFINE ('PK_RS_DISPLAY', true);
$pk_rs_meta_box = array(
'id' => 'pk_rich_snippet_review',
'title' => 'Google Rich Snippets: Reviews',
'page' => 'post',
'context' => 'normal',
'priority' => 'high',
'fields' => array(
array(
'name' => 'Rating',
'desc' => 'Product rating, from 1 to 5.',
'id' => 'rating',
'type' => 'select',
'options' => array('-', '1.0', '1.5', '2.0', '2.5', '3.0', '3.5', '4.0', '4.5', '5.0')
),
array(
'name' => 'Author',
'desc' => 'Author display name.',
'id' => 'author',
'type' => 'text',
'std' => ''
)
)
);
add_action('admin_menu', 'pk_rich_snippet_add_box');
// Add meta box
function pk_rich_snippet_add_box() {
global $pk_rs_meta_box;
add_meta_box($pk_rs_meta_box['id'], $pk_rs_meta_box['title'], 'pk_rich_snippet_show_box', $pk_rs_meta_box['page'], $pk_rs_meta_box['context'], $pk_rs_meta_box['priority']);
}
// Callback function to show fields in meta box
function pk_rich_snippet_show_box() {
global $pk_rs_meta_box, $post;
// Use nonce for verification
echo '<input type="hidden" name="pk_rich_snippet_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';
echo '<table class="form-table">';
foreach ($pk_rs_meta_box['fields'] as $field) {
// get current post meta data
$meta = get_post_meta($post->ID, $field['id'], true);
echo '<tr>',
'<th style="width:20%"><label for="', $field['id'], '">', $field['name'], '</label></th>',
'<td>';
switch ($field['type']) {
case 'text':
echo '<input type="text" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />',
'<br />', $field['desc'];
break;
case 'textarea':
echo '<textarea name="', $field['id'], '" id="', $field['id'], '" cols="60" rows="4" style="width:97%">', $meta ? $meta : $field['std'], '</textarea>',
'<br />', $field['desc'];
break;
case 'select':
echo '<select name="', $field['id'], '" id="', $field['id'], '">';
foreach ($field['options'] as $option) {
echo '<option', $meta == $option ? ' selected="selected"' : '', '>', $option, '</option>';
}
echo '</select>', '<br />', $field['desc'];
break;
case 'radio':
foreach ($field['options'] as $option) {
echo '<input type="radio" name="', $field['id'], '" value="', $option['value'], '"', $meta == $option['value'] ? ' checked="checked"' : '', ' />', $option['name'];
}
break;
case 'checkbox':
echo '<input type="checkbox" name="', $field['id'], '" id="', $field['id'], '"', $meta ? ' checked="checked"' : '', ' />',
'<br />', $field['desc'];
break;
}
echo '<td>',
'</tr>';
}
echo '</table>';
}
add_action('save_post', 'pk_rs_save_data');
// Save data from meta box
function pk_rs_save_data($post_id) {
global $pk_rs_meta_box;
// verify nonce
if (!wp_verify_nonce($_POST['pk_rich_snippet_nonce'], basename(__FILE__))) {
return $post_id;
}
// check autosave
if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
return $post_id;
}
// check permissions
if ('page' == $_POST['post_type']) {
if (!current_user_can('edit_page', $post_id)) {
return $post_id;
}
} elseif (!current_user_can('edit_post', $post_id)) {
return $post_id;
}
foreach ($pk_rs_meta_box['fields'] as $field) {
$old = get_post_meta($post_id, $field['id'], true);
$new = $_POST[$field['id']];
if ($new && $new != $old) {
update_post_meta($post_id, $field['id'], $new);
} elseif ('' == $new && $old) {
delete_post_meta($post_id, $field['id'], $old);
}
}
}
add_filter('the_content', 'pk_rs_add_rich_snippet_to_content', 20);
function pk_rs_add_rich_snippet_to_content($content){
if (is_single()&&!is_feed()){
global $post;
$rating = get_post_meta($post->ID, 'rating', true);
$rating = ( '-' == $rating && '-' != PK_RS_DEFAULT_RATING ) ? PK_RS_DEFAULT_RATING : $rating;
if ( '-' != $rating ){
$title = $post->post_title ;
$dateTime = date_create( $post->post_date );
$date = $dateTime->format("Y-m-d");
$date_only = $dateTime->format("M j");
$author = get_post_meta($post->ID, 'author', true);
$author = ( '' == $author ) ? ucfirst(get_the_author_meta('display_name', $post->post_author)) : $author;
$summary = get_post_meta($post->ID, 'summary', true);
$description = get_post_meta($post->ID, 'description', true);
if ( !PK_RS_DISPLAY ) {
$output = "<div class=\"hreview\" style=\"display:none\">";
$output .= "<span class=\"item\"><span class=\"fn entry-title\">".$title."</span></span>";
$output .= "Reviewed by <span class=\"reviewer\">".$author."</span> on <span class=\"dtreviewed\"> ".$date_only."<span class=\"value-title\" title=\"".$date."\"></span></span>";
$output .= "Rating: <span class=\"rating\">".$rating."</span>";
$output .= "<span class=\"summary\">".$summary."</span>";
$output .= "<span class=\"description\">".$description."</span>";
$output .= "</div>";
} else {
$output = "<div class=\"hreview\" style=\"display:block; margin: 0 0 10px 10px; padding: 10px; background: #F6F6F6; border: 1px solid #DDD; -moz-border-radius: 3px; border-radius: 3px; font-size: 0.8em; width: 30%; float: right;\">";
$output .= "Title: <span class=\"item\"><span class=\"fn entry-title\" style=\"font-size: 0.8em;font-weight: normal;\">".$title."</span></span><br />";
$output .= "Reviewed by <span class=\"reviewer\">".$author."</span> on <span class=\"dtreviewed\"> ".$date_only."<span class=\"value-title\" title=\"".$date."\"></span></span><br/>";
$output .= "Rating: <span class=\"rating\">".$rating."</span><br/>";
$output .= ( 0 < strlen($summary) ) ? "Summary: <span class=\"summary\">".$summary."</span><br/>" : "";
$output .= ( 0 < strlen($description) ) ? "<p><span class=\"description\">".$description."</span></p>" : "";
$output .= "</div>";
}
$content = $output.$content ;
}
}
return $content;
}
?>