获取革命滑块简码

Question

我正在尝试新的东西。我有一个 Wordpress 自定义主题。我有高级自定义字段的所有设置。我在带有 "choices" 的 "select" 字段上使用高级自定义字段的 load_field 函数。我基本上想做的是将革命滑块短代码显示为该字段的选项...这是我在 functions.php 文件中的代码。任何帮助将不胜感激！ :)

<?php

function my_acf_load_field( $field ) {

    $field['choices'] = array(
        <-- WANT REVOLUTION SLIDER SHORTCODES HERE -->
    );

    return $field;

}


// all
// add_filter('acf/load_field', 'my_acf_load_field');

// type
add_filter('acf/load_field/type=select', 'my_acf_load_field');

// name
// add_filter('acf/load_field/name=my_select', 'my_acf_load_field');

// key
// add_filter('acf/load_field/key=field_508a263b40457', 'my_acf_load_field');

?>

Answer 1

您可以执行以下操作。 Revolution slider 滑块项目存储在名为 wp_revslider_sliders 的 table 中（wp_ 部分可能会根据您设置数据库的方式而改变 - 首先检查 table 名称）

您可以使用 Wordpress $wpdb 全局查询此 table 并取回别名字段 - 用于作为简码。所以在你的负载场函数的主体中你可以尝试这样的事情

function my_acf_load_field( $field ) {
    global $wpdb;
    $query = sprintf('select r.id, r.alias from %srevslider_sliders r',$wpdb->prefix);
    $sliders = $wpdb->get_results($query,OBJECT);

    foreach($sliders as $slider)
    {
        //This just formats the string with the correct short code
        $field['choices'][$slider->alias] = sprintf('[rev_slider alias="%s"]',$slider->alias);
    }

    return $field;
}

这应该用正确的选项填充您的下拉列表 - 或者至少让您走上正确的道路

Answer 2

答案更新于 2020 年 4 月 22 日：对于 Slider Revolution V6，函数 getAllSliderAliases() 已替换为 get_sliders() 和 returns 对象数组，而不是字符串数组。 Source.

functions.php for Slider Revolution V6

function my_acf_load_field( $field ) {
    if ( class_exists( 'RevSlider' ) ) {
        $rev_slider = new RevSlider();
        $sliders = $rev_slider->get_sliders();
        if(count($sliders) > 0) {
            foreach($sliders as $slider)
            {
                $field['choices'][$slider->alias] = $slider->title;
            }
        } else {
            $field['choices'] = array( 'none' => 'No sliders exist. You must create one first.' );
        }
    } else {
        $field['choices'] = array( 'none' => 'Slider Revolution plugin was not found.' );
    }
    return $field;
}
//Only place these options on a specific select field with the alias "rev_slider"
add_filter('acf/load_field/name=rev_slider', 'my_acf_load_field');

然后在模板或您使用自定义字段的任何页面上，我将实际的简码放在那里。

page.php

$slider_alias = get_field('rev_slider');
if(!empty($slider_alias)) {
    echo do_shortcode(sprintf('[rev_slider alias="%s"]', $slider_alias));
}

V6 之前的 Slider Revolution 版本的旧答案

出于某种原因，我从 Andrew M 的回答中获得的 $sliders 变量没有返回任何内容，所以我想出了这个基于 Themepunch's documentation for displaying any slider at random and this article 的解决方案来检查 class首先存在以避免错误。

functions.php 对于 V6 之前的 Slider Revolution 版本

function my_acf_load_field( $field ) {
    if ( class_exists( 'RevSlider' ) ) {
        $rev_slider = new RevSlider();
        $slider_aliases = $rev_slider->getAllSliderAliases();
        if(count($slider_aliases) > 0) {
            foreach($slider_aliases as $slider_alias)
            {
                $field['choices'][$slider_alias] = $slider_alias;
            }
        } else {
            $field['choices'] = array( 'none' => 'No sliders exist. You must create one first.' );
        }
    } else {
        $field['choices'] = array( 'none' => 'Slider Revolution plugin was not found.' );
    }
    return $field;
}
//Only place these options on a specific select field with the alias "rev_slider"
add_filter('acf/load_field/name=rev_slider', 'my_acf_load_field');

Answer 3

从 Slider Revolution V6 开始，方法 "getAllSliderAliases" 不再可用。新代码是：

functions.php

function my_acf_load_field($field)
{
    if (class_exists('RevSlider')) {
        $rev_slider = new RevSlider();
        $slider_aliases = $rev_slider->get_sliders();
        if (count($slider_aliases) > 0) {
            foreach ($slider_aliases as $slider_alias) {
                $field['choices'][$slider_alias->alias] = $slider_alias->alias;
            }
        } else {
            $field['choices'] = array('none' => 'No sliders exist. You must create one first.');
        }
    } else {
        $field['choices'] = array('none' => 'Slider Revolution plugin was not found.');
    }
    return $field;
}
//Only place these options on a specific select field with the alias "rev_slider"
add_filter('acf/load_field/name=rev_slider', 'my_acf_load_field');

page.php

$slider_alias = get_field('rev_slider');
if(!empty($slider_alias)) {
    echo do_shortcode(sprintf('[rev_slider alias="%s"]', $slider_alias));
}

获取革命滑块简码

Fetching revolution slider shortcodes

php

wordpress

advanced-custom-fields