中继器上的get_sub_field返回空键/值
编辑：使用输出数组的代码进行了更新
应该注意，我还有其他可以正常工作的字段，问题仅在于转发器的sub_fields。
// Needs to be updated to be more dynamic i know
function get_flexible_content_sections($name, $option = "") {
// check if the flexible content field has rows of data
if ( have_rows( $name, $option ) ):
// loop through the rows of data
while ( have_rows( $name, $option ) ) : the_row(); ?>
<section class="section <?= get_sub_field( "class" ) ?>">
<div class="section-content clear">
<?php while ( have_rows( "section" ) ) : the_row();
if ( get_row_layout() == 'one_width_cols' ) : ?>
<div class="full-width-col cols-12">
<?php while ( have_rows( "module_1" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<?php elseif ( get_row_layout() == 'two_width_cols' ) : ?>
<div class="half-width-col col-1 cols-6">
<?php while ( have_rows( "module_1" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="half-width-col col-2 cols-6 last">
<?php while ( have_rows( "module_2" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<?php elseif ( get_row_layout() == 'three_width_cols' ) : ?>
<div class="three-width-col col-1 cols-4">
<?php while ( have_rows( "module_1" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="three-width-col col-2 cols-4">
<?php while ( have_rows( "module_2" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="three-width-col col-3 cols-4 last">
<?php while ( have_rows( "module_3" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<?php elseif ( get_row_layout() == 'four_width_cols' ) : ?>
<div class="four-width-col col-1 cols-3">
<?php while ( have_rows( "module_1" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="four-width-col col-2 cols-3">
<?php while ( have_rows( "module_2" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="four-width-col col-3 cols-3">
<?php while ( have_rows( "module_3" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="four-width-col col-4 cols-3 last">
<?php while ( have_rows( "module_4" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<?php elseif ( get_row_layout() == 'five_width_cols' ) : ?>
<div class="five-width-col col-1 cols-2">
<?php while ( have_rows( "module_1" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="five-width-col col-2 cols-2">
<?php while ( have_rows( "module_2" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="five-width-col col-3 cols-2">
<?php while ( have_rows( "module_3" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="five-width-col col-4 cols-2">
<?php while ( have_rows( "module_4" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<div class="five-width-col col-5 cols-2 last">
<?php while ( have_rows( "module_5" ) ) : the_row();
get_layout_modules( get_row_layout() );
endwhile; ?>
</div>
<?php endif;
endwhile; ?>
</div> <!--end section-content-->
</section>
<?php endwhile;
else :
// no layouts found
endif;
}
function layout_module_slider() {
ob_start();
?><div class="layout-module-slider <?= get_sub_field('class'); ?>">
<?php
$files = get_sub_field('img_slider');
// pre is a function which wraps a value with print_r
pre($files); // <-- prints the "empty" array
if(count($files) > 0 ) {
echo slick_slider_func($files);
} else {
echo "No images available";
}
?>
</div><?php
return ob_get_clean();
}
原始：
我在灵活的内容层中有一个嵌套的转发器字段。目的是添加输出到滑块的图像。
图像ID存储在数据库中，但是当我尝试使用get_sub_field输出它们时，这就是我得到的：
我已经以编程方式构建了字段组，该字段组在后端工作，如下所示。相当于上述输出的后端：
整个ACF设置/程序：
if ( function_exists( 'acf_add_local_field_group' ) ):
add_action("init", "tryangle_generate_sections_fields");
function tryangle_generate_sections_fields() {
$indhold_gd = array(
'key' => 'group_indhold',
'title' => 'Indhold',
'fields' => array (),
'location' => array (
array (
array (
'param' => 'post_type',
'operator' => '==',
'value' => 'page',
),
),
),
'position' => 'acf_after_title',
'menu_order' => 0,
);
generate_fields( "indhold224466", $indhold_gd );
}
endif;
function generate_fields($uniqid, $group_data)
{
if(empty($uniqid) || empty($group_data)) return;
// Sets a unique affix on all keys
$uiq = $uniqid;
// Sets the group_data with locations etc.
$group_data['key'] = $group_data['key'] . '_' . $uiq;
// Available modules
$modules = array(
array(
'key' => '5b2cefcfdea9da_'.$uiq,
'name' => 'text',
'label' => 'Text',
'display' => 'block',
'sub_fields' => array(
array(
'key' => 'field_5b2d13ddfb10ba_'.$uiq,
'label' => 'Text',
'name' => 'text',
'type' => 'wysiwyg',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array(
'width' => '',
'class' => '',
'id' => '',
),
'default_value' => '',
'tabs' => 'all',
'toolbar' => 'full',
'media_upload' => 1,
'delay' => 0,
),
),
'min' => '',
'max' => '',
),
array (
'key' => '5b3e2a167d2ee_'.$uiq,
'name' => 'image_slider',
'label' => 'Slider',
'display' => 'block',
'sub_fields' => array (
array (
'key' => 'field_5b3e2a3047a45_'.$uiq,
'label' => 'Slider',
'name' => 'img_slider',
'type' => 'repeater',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'collapsed' => '',
'min' => 0,
'max' => 0,
'layout' => 'table',
'button_label' => 'Tilføj billede',
'sub_fields' => array (
array (
'key' => 'field_5b3e2a3b47a46_'.$uiq,
'label' => 'Billede',
'name' => 'img',
'type' => 'image',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '20',
'class' => '',
'id' => '',
),
'return_format' => 'array',
'preview_size' => 'thumbnail',
'library' => 'all',
'min_width' => '',
'min_height' => '',
'min_size' => '',
'max_width' => '',
'max_height' => '',
'max_size' => '',
'mime_types' => '',
),
array (
'key' => 'field_5b3e2a5647a47_'.$uiq,
'label' => 'Billedetekst',
'name' => 'img_text',
'type' => 'wysiwyg',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'default_value' => '',
'tabs' => 'all',
'toolbar' => 'full',
'media_upload' => 1,
'delay' => 0,
),
),
),
),
'min' => '',
'max' => '',
),
array(
'key' => '5b2cf0bbbf1c9a_'.$uiq,
'name' => 'posts_slider',
'label' => 'Indlægsslider',
'display' => 'block',
'sub_fields' => array(
array(
'key' => 'field_5b2d13ddfb110a_'.$uiq,
'label' => 'Indlægskategori',
'name' => 'post_category',
'type' => 'taxonomy',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array(
'width' => '',
'class' => '',
'id' => '',
),
'taxonomy' => 'category',
'field_type' => 'select',
'allow_null' => 0,
'add_term' => 0,
'save_terms' => 0,
'load_terms' => 0,
'return_format' => 'object',
'multiple' => 0,
),
array(
'key' => 'field_5b2d13ddfb111a_'.$uiq,
'label' => 'Udseende',
'name' => 'style',
'type' => 'select',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array(
'width' => '',
'class' => '',
'id' => '',
),
'choices' => array(
'Slider' => 'Slider',
'Grid' => 'Grid',
),
'default_value' => array(),
'allow_null' => 0,
'multiple' => 0,
'ui' => 0,
'ajax' => 0,
'return_format' => 'value',
'placeholder' => '',
),
),
'min' => '',
'max' => '',
),
);
// Section columns
$columns = array(
array(
'key' => 'field_one_width_cols_'.$uiq,
'name' => 'one_width_cols',
'label' => 'En kolonne',
'display' => 'block',
'sub_fields' => array(
),
'min' => '',
'max' => '',
'cols' => 1,
),
array(
'key' => 'field_two_width_cols_'.$uiq,
'name' => 'two_width_cols',
'label' => 'To kolonner',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
'cols' => 2,
),
array(
'key' => 'field_three_width_cols_'.$uiq,
'name' => 'three_width_cols',
'label' => 'Tre kolonner',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
'cols' => 3,
),
array(
'key' => 'field_four_width_cols_'.$uiq,
'name' => 'four_width_cols',
'label' => 'Fire kolonner',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
'cols' => 4,
),
array(
'key' => 'field_five_width_cols_'.$uiq,
'name' => 'five_width_cols',
'label' => 'Fem kolonner',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
'cols' => 5,
)
);
/**
* Add columns to sections
*/
$loops = 1;
foreach ($columns as $key => $col)
{
// loop for the amount of columns available (5 columns)
for ($i = 1; $i <= $col['cols']; $i++) {
$width = 100 / $loops;
$columns[$key]['sub_fields'][] = array(
'key' => 'field_module_'.$i.'_'.$uiq,
'label' => 'Modul',
'name' => 'module_'.$i,
'type' => 'flexible_content',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array(
'width' => $width,
'class' => '',
'id' => '',
),
'min' => '',
'max' => '',
'button_label' => 'Tilføj modul',
'layouts' => $modules,
);
}
$loops++;
}
// Add field group "Indhold"
acf_add_local_field_group($group_data);
// Add sections to the "Indhold" field group
acf_add_local_field(array(
'parent' => 'group_indhold_'.$uiq,
'key' => 'field_sections_'.$uiq,
'label' => 'Sektioner',
'name' => 'sections',
'type' => 'flexible_content',
'button_label' => 'Tilføj sektion',
'layouts' => array(
array(
'key' => 'layout_section_'.$uiq,
'name' => 'section',
'label' => 'Sektion',
'display' => 'block',
'sub_fields' => array(
array(
'key' => 'field_section_'.$uiq,
'label' => 'Sektion',
'name' => 'section',
'type' => 'flexible_content',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array(
'width' => '',
'class' => '',
'id' => '',
),
'min' => '',
'max' => '',
'button_label' => 'Tilføj kolonner',
'layouts' => $columns,
),
array(
'key' => 'field_section_class_'.$uiq,
'label' => 'Sektion class',
'name' => 'class',
'type' => 'text',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array(
'width' => '',
'class' => '',
'id' => '',
),
'default_value' => '',
'placeholder' => '',
'prepend' => '',
'append' => '',
'maxlength' => '',
),
),
),
),
));
}
非常感谢您的帮助！我整天都被这个困扰。 谢谢！
2 个答案:
答案 0 :(得分：1)
好吧，我不确定为什么它为空：
pre($files); // <-- prints the "empty" array
但是，您可以替换为：
$files = get_sub_field('img_slider');
..使用以下命令：（手动为$files构建数据）
$files = array();
if ( have_rows( 'img_slider' ) ) {
// Loop through the repeater's fields and manually fill in the `$files` array.
while ( have_rows( 'img_slider' ) ) : the_row();
if ( $image = get_sub_field( 'img' ) ) {
// These are just examples; just rename the keys, add more items, etc.
// it's all up to you.
$files[] = array(
'url' => $image['url'],
'text' => get_sub_field( 'img_text' ),
// ...
);
}
endwhile;
}
//var_dump( $files );
附加代码
此循环还可以为您提供帮助，我曾经从sections字段（最顶层的字段）开始获取滑块项（即图像及其标题/文本）：
$post_id = false; // `false` defaults to the global `$post`
if ( have_rows( 'sections', $post_id ) ) :
while ( have_rows( 'sections', $post_id ) ) : the_row(); // loop #1
// With the current fields defined in `generate_fields()`, the 'class'
// is only available in loop #1.
$section_class = get_sub_field( 'class' );
echo '<div class="' . esc_attr( $section_class ) . '">'; // start the section
if ( have_rows( 'section' ) ) {
while ( have_rows( 'section' ) ) : the_row(); // loop #2
if ( have_rows( 'module_1' ) ) {
while ( have_rows( 'module_1' ) ) : the_row(); // loop #3
// In section #2 only.
the_sub_field( 'text' );
// In section #1 only.
if ( have_rows( 'img_slider' ) ) {
echo '<ul class="slider">';
while ( have_rows( 'img_slider' ) ) : the_row(); // loop #4
echo '<li class="slide-item">';
$image = get_sub_field( 'img' );
echo wp_get_attachment_image( $image['id'] );
the_sub_field( 'img_text' );
echo '</li>';
endwhile; // end loop #4
echo '</ul>';
}
endwhile; // end loop #3
}
endwhile; // end loop #2
}
echo '</div>'; // end section
endwhile; // end loop #1
endif;
第1部分（image-slider）
第2部分（lorem-ipsum）
答案 1 :(得分：1)
我从头开始，重新定义了ACF中的所有字段，并以编程方式仔细地添加了唯一生成的键（某些键是重复的，可能是问题所在）。更新的代码现在可以正常工作了。
下面发布的完整代码（无输出，应与标准ACF文档一起使用）。 我还添加了用于将字段键替换为唯一键的搜寻器。
尽管此新代码可以工作并且完全相同，但是不确定错误在哪里出在原始帖子中。
<?php
if ( function_exists( 'acf_add_local_field_group' ) ):
add_action("init", "tryangle_generate_sections_fields");
function tryangle_generate_sections_fields() {
$indhold_gd = array(
'key' => 'group_5b3f61bd82eba',
'title' => 'Indhold',
'location' => array (
array (
array (
'param' => 'post_type',
'operator' => '==',
'value' => 'page',
),
),
),
'position' => 'acf_after_title',
'menu_order' => 0,
'style' => 'default',
'label_placement' => 'top',
'instruction_placement' => 'label',
'hide_on_screen' => '',
'active' => 1,
'description' => '',
);
generate_fields( "allpages", $indhold_gd );
}
endif;
/**
* Alters the ACF keys of the passed array, with the pass key affix
* @param $fields array Take ACF fields array as input.
* @param $randkey string String which is appended on the key
*
* @return array Returns passed array with altered keys
*/
function crawl_generate_keys($fields, $randkey) {
if(is_array($fields))
{
foreach ( $fields as $fk => $f )
{
if(!empty(is_array($fields[$fk]['sub_fields'])))
{
$fields[$fk]['sub_fields'] = crawl_generate_keys($fields[$fk]['sub_fields'], $randkey);
}
else if(!empty(is_array($fields[$fk]['layouts'])))
{
$fields[$fk]['layouts'] = crawl_generate_keys($fields[$fk]['layouts'], $randkey);
}
$fields[$fk]['key'] = $fields[$fk]['key'] . '_' . $randkey;
}
} else {
$fields['key'] = $fields['key'] . '_' . $randkey;
}
return $fields;
}
function generate_fields($uniqid, $gd)
{
// Declare the available layout modules
// The different layouts, such as slider, text field, statement slider
$layouts = array(
array (
'key' => '5b3f63d3bc38c_' . $uniqid,
'name' => 'text',
'label' => 'Text',
'display' => 'block',
'sub_fields' => array (
array (
'key' => 'field_5b3f641bb0588_' . $uniqid,
'label' => 'Text',
'name' => 'text',
'type' => 'wysiwyg',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'default_value' => '',
'tabs' => 'all',
'toolbar' => 'full',
'media_upload' => 1,
'delay' => 0,
),
),
'min' => '',
'max' => '',
),
array (
'key' => '5b3f6425b0589_' . $uniqid,
'name' => 'slider',
'label' => 'Slider',
'display' => 'block',
'sub_fields' => array (
array (
'key' => 'field_5b3f6428b058a_' . $uniqid,
'label' => 'Slider',
'name' => 'slider',
'type' => 'repeater',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'collapsed' => '',
'min' => 0,
'max' => 0,
'layout' => 'table',
'button_label' => 'Tilføj billede',
'sub_fields' => array (
array (
'key' => 'field_5b3f642fb058b_' . $uniqid,
'label' => 'Billede',
'name' => 'image',
'type' => 'image',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '20',
'class' => '',
'id' => '',
),
'return_format' => 'array',
'preview_size' => 'thumbnail',
'library' => 'all',
'min_width' => '',
'min_height' => '',
'min_size' => '',
'max_width' => '',
'max_height' => '',
'max_size' => '',
'mime_types' => '',
),
array (
'key' => 'field_5b3f6453b058c_' . $uniqid,
'label' => 'Billede tekst',
'name' => 'image_text',
'type' => 'wysiwyg',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'default_value' => '',
'tabs' => 'all',
'toolbar' => 'full',
'media_upload' => 1,
'delay' => 0,
),
),
),
array (
'key' => 'field_5b40ec12be700_' . $uniqid,
'label' => 'Slider class',
'name' => 'slider_class',
'type' => 'text',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'default_value' => '',
'placeholder' => '',
'prepend' => '',
'append' => '',
'maxlength' => '',
),
),
'min' => '',
'max' => '',
),
array (
'key' => '5b3f64a5b058d_' . $uniqid,
'name' => 'statements',
'label' => 'Udtalelser',
'display' => 'block',
'sub_fields' => array (
array (
'key' => 'field_5b3f64b4b058e_' . $uniqid,
'label' => 'Udtalelser',
'name' => 'statements',
'type' => 'post_object',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'post_type' => array (
0 => 'udtalelser',
),
'taxonomy' => array (
),
'allow_null' => 0,
'multiple' => 1,
'return_format' => 'object',
'ui' => 1,
),
),
'min' => '',
'max' => '',
),
);
// Declare the avaialable columns
// The key indicates amount columns for that column
$columns = array (
1 => array (
'key' => '5b3f636009d7e1_' . $uniqid,
'name' => 'one_width_cols',
'label' => 'En kolonne',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
),
2 => array (
'key' => '5b3f636009d7e2_' . $uniqid,
'name' => 'two_width_cols',
'label' => 'To kolonner',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
),
3 => array (
'key' => '5b3f636009d7e3_' . $uniqid,
'name' => 'three_width_cols',
'label' => 'Tre kolonner',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
),
4 => array (
'key' => '5b3f636009d7e4_' . $uniqid,
'name' => 'four_width_cols',
'label' => 'Fire kolonner',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
),
5 => array (
'key' => '5b3f636009d7e5_' . $uniqid,
'name' => 'five_width_cols',
'label' => 'Fem kolonner',
'display' => 'block',
'sub_fields' => array(),
'min' => '',
'max' => '',
),
);
// Add layout modules to modules, add modules to columns
foreach ($columns as $k => $c)
{
// Loop for every module to be added to the column
for ($i = 1; $i <= $k; $i++)
{
$keyaffix = 'c' . $k . '_m' . $i;
$wrapperWidth = 100 / $k;
$insLayouts = crawl_generate_keys($layouts, $keyaffix);
$columns[$k]['sub_fields'][] = array(
'key' => 'field_5b3f63c1b0586_' . $keyaffix . '_' . $uniqid,
'label' => 'Modul',
'name' => 'module_' . $i,
'type' => 'flexible_content',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => $wrapperWidth,
'class' => '',
'id' => '',
),
'button_label' => 'Tilføj modul',
'min' => '',
'max' => '',
'layouts' => $insLayouts,
);
}
}
acf_add_local_field_group(array (
'key' => $gd['key'] . '_'. $uniqid,
'title' => $gd['title'],
'fields' => array (
array (
'key' => 'field_5b3f61c74f5b2_' . $uniqid,
'label' => 'Sektioner',
'name' => 'sections',
'type' => 'flexible_content',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'button_label' => 'Tilføj sektion',
'min' => '',
'max' => '',
'layouts' => array (
array (
'key' => '5b3f61ce24ec5_' . $uniqid,
'name' => 'section',
'label' => 'Sektion',
'display' => 'block',
'sub_fields' => array (
array (
'key' => 'field_5b3f6359b0585_' . $uniqid,
'label' => 'Sektion',
'name' => 'section',
'type' => 'flexible_content',
'instructions' => '',
'required' => 0,
'conditional_logic' => 0,
'wrapper' => array (
'width' => '',
'class' => '',
'id' => '',
),
'button_label' => 'Tilføj kolonner',
'min' => '',
'max' => '',
'layouts' => $columns,
),
),
'min' => '',
'max' => '',
),
),
),
),
'location' => $gd['location'],
'menu_order' => $gd['menu_order'],
'position' => $gd['position'],
'style' => $gd['style'],
'label_placement' => $gd['label_placement'],
'instruction_placement' => $gd['instruction_placement'],
'hide_on_screen' => $gd['hide_on_screen'],
'active' => $gd['active'],
'description' => $gd['description'],
));
}
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