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Attach uploads from post_content to post in frontend

  • Hi!
    The problem is that files uploaded from frontend are not attached to post. I examined this solutions:
    But as I understood they work well only for specific fields, but not for post_content field.
    Is there any solution to attach uploaded files in post_content (fe images), to post (update their post_parent)?
    Thanks in advance!

  • No there isn’t, and it would be difficult to do so. You would need to parse the HTML in post_content to find the images and the image IDs added to the content preg_match_all() and a regular expression.

    Here is an example of an image inserted into content

    <img class="alignnone size-medium wp-image-140" src="" alt="" width="300" height="169" />

    you can see that in the class the image ID of “140” is included.

    This has not been tested, but something like might do it.

    preg_match_all('/wp-image-(\d+)/', $string, $matches);

    And you’re list of ID (as strings) would be found in $matches[1].

  • Thank you!

    I tried this, but it failed:

    function my_save_post( $post_id ) {
    	$my_content = get_field('post_content', $post_id);
    	preg_match_all('/wp-image-(\d+)/', $content, $matches);
    	$imagatt = $matches[1];
    		foreach( $imagatt as $imagat ):
    			$post_to_update = array(
    				'ID'           => $imagat,
    				'post_parent'  => $post_id
    			wp_update_post( $post_to_update );
    add_action('acf/save_post', 'my_save_post', 20);

    I also tried
    $my_content = $_POST['post_content'];
    instead of
    $my_content = get_field('post_content', $post_id);

    In template I use:

    <?php acf_form(array(
            'post_id'       => 'new_post',
            'new_post'      => array(
             'post_type'     => 'upr',
    	'post_title'    => true,
            'post_content'  => true,
            'submit_value'  => 'Add item'
        )); ?>

    Can you help me? I think the solution is not so far…

  • Oh, of course $content means $my_content, but that’s not the reason.

  • Like I said, I don’t know if the regular expression is returning what I think it is because I have not tested it. I would output it to see

    // temp line to test what is matched
    var_dump($matches); exit;

    Also, Post ID’s must be integers and $matches will contain strings if it’s returning anything

    'ID'           => intval($imagat),
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