我正在處理自定義帖子類型存檔，我想添加 A-Z 過濾菜單。 我設(shè)法按照這個(gè)線程（Create letterical Pagination in wordpress）讓它正常工作，但我不明白我的初始頁面（/exposants）如何顯示所有結(jié)果。<div class="exposant__filter" id="exposants"> <a href="/exposants/#exposants"><?php _e('Tout', 'festival'); ?></a> <?php $posts = get_posts(array( 'numberposts' => -1, 'post_type' => 'exposant', 'orderby' => 'title', 'order' => 'ASC', )); $firstLetters = array(); foreach($posts as $post) { $title = $post->post_title; $startingLetter = substr($title, 0, 1); $dupeFirstLetters[] = $startingLetter; $firstLetters = array_unique($dupeFirstLetters); sort($firstLetters); } foreach($firstLetters as $letter) { echo "<a href=\"?lettre=$letter\">$letter</a>"; } if(!empty($_GET['lettre'])) { $letter = $_GET['lettre']; } else { $letter = $firstLetters[0]; } ?> </div> <?php $exposantsArchive = new WP_Query(array( 'posts_per_page' => -1, 'post_type' => 'exposant', 'orderby' => 'title', 'order' => 'ASC', )); ?> <div class="row row--2col u-m-top--8"> <?php while($exposantsArchive->have_posts()) { $exposantsArchive->the_post(); $first_letter = strtoupper(substr(apply_filters('the_title',$post->post_title),0,1)); $logo = get_field('logo'); if($first_letter == strtoupper($letter)) { ?> <div class="exposant__thumb col--padding-right"> <div class="exposant__logo"> <img src="<?php echo $logo['url'] ?>" alt="<?php echo $logo['alt'] ?>"> </div>我想我必須替換 else {$letter = $firstLetters[0];} 但我不知道用什么替換。預(yù)先感謝您的寶貴支持。
1 回答
慕少森
TA貢獻(xiàn)2019條經(jīng)驗(yàn) 獲得超9個(gè)贊
如果我正確理解了問題，這里是您的代碼的稍微優(yōu)化的版本。為了清楚起見，我冒昧地盡可能地將你的 php 和 html 解耦。
它沒有經(jīng)過測(cè)試，可能需要一些調(diào)整，但總的來說我希望這能成功！
在您的functions.php文件中，添加以下內(nèi)容，這將允許您按首字母過濾數(shù)據(jù)庫查詢：
add_filter( 'posts_where', 'tomtom_posts_where', 10, 2 );
function tomtom_posts_where( $args, $wp_query_obj )
{
global $wpdb;
$starts_with = $wp_query->get( 'starts_with' )
if ( $starts_with ) {
$args .= ' AND ' . $wpdb->posts . '.post_title LIKE \'' . esc_sql( $wpdb->esc_like( $starts_with ) ) . '%\'';
}
return $where;
}
然后：
<?php
/**
* Outputs an alphabetic paginator.
*
* @return void
*/
function tomtom_output_alphabetic_paginator() {
$posts = get_posts( array(
'numberposts' => -1,
'post_type' => 'exposant',
'orderby' => 'title',
'order' => 'ASC',
) );
$firstLetters = array();
foreach ( $posts as $post ) {
$title = $post->post_title;
$startingLetter = substr( $title, 0, 1 );
$dupeFirstLetters[] = $startingLetter;
}
$firstLetters = array_unique( $dupeFirstLetters );
sort( $firstLetters );
echo "<a href=\"/exposants/#exposants\">" . __('Tout', 'festival') . "</a>";
foreach ( $firstLetters as $letter ) {
echo "<a href=\"?lettre={$letter}\">{$letter}</a>";
}
}
/**
* Gets an array of exposant custom post types.
*
* @return array
*/
function tomtom_get_exposants() {
$args = array(
'posts_per_page' => -1,
'post_type' => 'exposant',
'orderby' => 'title',
'order' => 'ASC',
);
if ( ! empty( $_GET['lettre'] ) ) {
$args['starts_with'] = $_GET['lettre'];
}
return new WP_Query( $args );
}
/**
* Adds fields to an exposant custom post type object.
*
* @param WP_Post $exposant Exposant custom post type.
* @return void
*/
function tomtom_hydrate_exposant( &$exposant ) {
$exposant->logo = get_field( 'logo', $exposant->ID );
$exposant->related = get_field( 'pieces_liees', $exposant->ID );
$exposant->description = get_field( 'description', $exposant->ID );
}
/**
* Outputs links related to exposant custom post type object.
*
* @return void
*/
function tomtom_output_related( $exposant ) {
if ( ! isset( $exposant->related ) ) {
tomtom_hydrate_exposant( $exposant );
}
foreach ( $exposant->related as $k => $category ) {
if ( $k ) {
echo '/';
}
echo "<a href=\"" . get_the_permalink( $category ) . "\">" . get_the_title( $category ) . "</a>";
}
}
?>
<div class="exposant__filter" id="exposants">
<?php tomtom_output_alphabetic_paginator(); ?>
</div>
<?php $exposantsArchive = tomtom_get_exposants(); ?>
<div class="row row--2col u-m-top--8">
<?php foreach ( $exposantsArchive as $exposant ): ?>
<?php tomtom_hydrate_exposant( $exposant ); ?>
<div class="exposant__thumb col--padding-right">
<div class="exposant__logo">
<img src="<?php echo $exposant->logo['url'] ?>" alt="<?php echo $exposant->logo['alt'] ?>">
</div>
<div class="exposant__thumb-content">
<h2 class="heading--as-h4 heading--no-margin"><?php echo $exposant->post_title; ?></h2>
<?php if ( $exposant->related ): ?>
<p class="exposant__categories">
<?php tomtom_output_related( $exposant->related ); ?>
</p>
<?php endif; ?>
<p class="exposant-thumb__excerpt"><?php echo wp_trim_words( $exposant->description, 16, '...' ); ?></p>
<a href="<?php get_permalink( $exposant->ID ); ?>" class="btn"><?php _e( 'Plus de détails', 'festival' ); ?></a>
</div>
</div>
<?php endforeach; ?>
</div>
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