将属性添加到wp_get_attachment_image

Question

我正在尝试为结果添加属性wp_get_attachment_image.

我想使用jquery lazyload来处理我的帖子缩略图的加载,为此我需要添加一个data-original=属性来创建<img>标签wp_get_attachment_image.

我试过了:

$imgsrc = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), "full" );
$imgsrc = $imgsrc[0];
$placeholderimg = wp_get_attachment_image( 2897, "full", array('data-original'=>$imgsrc) );

但它没有像我预期的那样添加数据属性.

<img class="attachment-full" width="759" height="278" alt="..." src="..."></img>

看看这个wp_get_attachment_image功能看起来应该是这样的:

function wp_get_attachment_image($attachment_id, $size = 'thumbnail', $icon = false, $attr = '') {


    $html = '';

    $image = wp_get_attachment_image_src($attachment_id, $size, $icon);

    if ( $image ) {

        list($src, $width, $height) = $image;

        $hwstring = image_hwstring($width, $height);

        if ( is_array($size) )

            $size = join('x', $size);

        $attachment =& get_post($attachment_id);

        $default_attr = array(

            'src'   => $src,

            'class' => "attachment-$size",

            'alt'   => trim(strip_tags( get_post_meta($attachment_id, '_wp_attachment_image_alt', true) )), // Use Alt field first

            'title' => trim(strip_tags( $attachment->post_title )),

        );

        if ( empty($default_attr['alt']) )

            $default_attr['alt'] = trim(strip_tags( $attachment->post_excerpt )); // If not, Use the Caption

        if ( empty($default_attr['alt']) )

            $default_attr['alt'] = trim(strip_tags( $attachment->post_title )); // Finally, use the title



        $attr = wp_parse_args($attr, $default_attr);

        $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment );

        $attr = array_map( 'esc_attr', $attr );

        $html = rtrim("<img $hwstring");

        foreach ( $attr as $name => $value ) {

            $html .= " $name=" . '"' . $value . '"';

        }

        $html .= ' />';

    }



    return $html;

}

我哪里错了？

Answer 1

我没有测试过,但我认为问题是你的数组应该是第四个参数wp_get_attachment_image,而不是第三个参数.

所以

$placeholderimg = wp_get_attachment_image( 2897, "full", array('data-original'=>$imgsrc) );

应该

$placeholderimg = wp_get_attachment_image( 2897, "full", false, array('data-original'=>$imgsrc) );

假设您false对$icon参数的默认值()感到满意.