Function to call the attachment image from post

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Hey everyone, I can’t se the image of the post (it is attached through gravity form as a post-image) with this function I see the missing image icon with the title and the working link but no thumbnail image.? It is suposed to be more or less ( authors last 2 posts in the widget area) I suspect the problem is here :

$output .= '<img src="' .  wp_attachment_is_image( $post_id ) . '" alt="" />';

So please help me out 😀

function get_related_author_posts() {
global $authordata, $post;

$authors_posts = get_posts( array( 'orderby' => 'rand', 'author' => $authordata->ID, 
'post__not_in' => array( $post->ID ), 'posts_per_page' => 2 ) );

$output="<ul class="post_related">" . "\n";
foreach ( $authors_posts as $authors_post ) {
    $output .= '<li><a href="' . get_permalink( $authors_post->ID ) . '" title="' . 
apply_filters( 'the_title', $authors_post->post_title, $authors_post->ID ) . '">';
    $output .= '<img src="' .  wp_attachment_is_image( $post_id ) . '" alt=""
/>';
    $output .= '</a></li>' . "\n";
}
$output .= '</ul>';

return $output;
}

2 Answers
2

Do I understand right that you mean featured thumbnail image for a post and not just any attached image?

See get_the_post_thumbnail() function and your usage will be something like this:

$output .= get_the_post_thumbnail( $authors_post->ID );

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