Private add_uploaded_file

Ziegel, thank you for your input, but your comment makes little sense.

how are you adding [0]? why? where?

@robm89

if, for example, the attachment tag is [submission_csv] in your contact form mail attachments config;

instead of

$submission->add_uploaded_file('submission_csv', $file);

try this

$properties = $form->get_properties();
$tag = '[submission_csv]';
if (false !== strpos($properties['mail']['attachments'], $tag)) {
	$properties['mail']['attachments'] = str_replace($tag, '', $properties['mail']['attachments']);
	$properties['mail']['attachments'] .= "\n" . $file;
	$form->set_properties( $properties );
}

if you want to always add a file, without a tag in the attachments box, just add it;

$properties = $form->get_properties();
$properties['mail']['attachments'] .= "\n" . $file;
$form->set_properties( $properties );

These examples assume

• you are in the wpcf7_before_send_mail hook
• $form is of type WPCF7_ContactForm
• $submission was of type WPCF7_Submission
• $file is a valid path; there is no change in the way paths are handled. If it worked before, it will work again

• This reply was modified 5 years ago by Internetbureau Clearsite. Reason: added a solid example
• This reply was modified 5 years ago by Internetbureau Clearsite.

They also added a new public method called “add_extra_attachments” on version 5.4.

You can just change
$submission->add_uploaded_file(…)

for
$submission->add_extra_attachments(‘path-to-file’)

Hey @karl578,

In what hook are you trying to add the attachment?
I noticed in recent projects that it does not work in the “wpcf7_before_send_mail” hook.

you could use something like this; (disclaimer: untested)

<?php

add_action('wpcf7_before_send_mail', function () {
	
	// get the current CF7 submission
	$submission = WPCF7_Submission::get_instance();
	if (!$submission || !is_a($submission, WPCF7_Submission::class)) {
		return;
	}

	// get the contact form for this subimssion
	$contact_form = $submission->get_contact_form();

	// get the form properties
	$properties = $contact_form->get_properties();
	$file_attachment_mail_tag_to_look_for = '[my_attachment]';
	$attachment_needed_in_this_mail = [];
	
	// search the mail-tab properties to see in which mail the attachments needs to be sent.
	foreach ([ 'mail', 'mail_2'] as $property) { // todo: there are filters to add more mails, perhaps there is a way to get them all??
		if (false !== strpos($properties[$property]['attachments'], $file_attachment_mail_tag_to_look_for)) {
			$attachment_needed_in_this_mail[] = $property;
		}
	}

	// which attachment? use your own logic to get the file path here ;)
	$attachment_file_path = this_is_the_function_that_returns_a_file_path();

	// if there is an attachment, filter the mail_components
	if ($attachment_file_path && is_file($attachment_file_path) && $attachment_needed_in_this_mail && is_array($attachment_needed_in_this_mail)) {
		add_filter('wpcf7_mail_components', function ($components, $contact_form, $mail) use ($attachment_needed_in_this_mail, $attachment_file_path) {
			if (in_array($mail->name(), $attachment_needed_in_this_mail)) {
				$components['attachments'][] = $attachment_file_path;
			}
			return $components;
		}, 11, 3);
	}
});

@clearsite Just got your code to work!!!

I messed up the generated path to the file that needed to be attached.

Thank you so much for your help.