Send body content and calendar invite in an email - php

Question

I am trying to send an email with both a calendar invite and HTML body content, but I can't seem to get the both added to the email object to be sent via SendGrid
I am able to send a calendar invite by itself and HTML body content by itself but not together.
function sendgridAPI(){
GLOBAL $mgClient,$domain,$toName, $toEmail, $fromName, $fromEmail, $subj, $body, $cc, $bcc, $attachments, $mimeMessage, $sendgrid_api_key;
$email = new \SendGrid\Mail\Mail();
$email->setFrom($fromEmail, $fromName);
$email->setSubject($subj);
$toEmails = [$toEmail => $toName,];
$email->addTos($toEmails);
if ($mimeMessage != ""){
echo "<br> 1 <br>";
$contents = [
"text/calendar" => $mimeMessage,
"text/html" => $body
];
$email->addContents($contents);
}
else{
$content = ["text/html" => $body];
$email->addContent($content);
}
if($cc != ""){
$ccEmails = [$cc => "CC",];
$email->addCcs($ccEmails);
}
if ($attachments != ""){
$filePath = $attachments;
$fileName = substr($attachments, strrpos($attachments, '/') + 1);
$fileData = base64_encode(file_get_contents($filePath));
$fileExtension = substr($attachments, strrpos($attachments, '.') + 1);
$fileType = 'application/'. $fileExtension;
$email->addAttachment(
$fileData,
$fileType,
$fileName,
"attachment"
);
$email->addAttachments($attachments);
}
$sendgrid = new \SendGrid($sendgrid_api_key);
try {
$response = $sendgrid->send($email);
$data = $response->headers();
print_r($data);
gettype($data['5']);
$responseSG = substr($data['5'], strpos($data['5'], ":") + 1);
return $responseSG;
//echo $responseSG;
} catch (Exception $e) {
echo 'Caught exception: '. $e->getMessage() ."\n";
return "";
}
}
?>
The variables are passed to this function then the email object is constructed to be sent using the SendGrid API

Answer 1

You need to create an attachment object for addAttachment(), not pass in a filename. And an array of Attachment objects for addAttachments()
https://github.com/sendgrid/sendgrid-php/blob/master/lib/mail/Mail.php#L1152-L1172
Here's the constructor for an Attachment:
https://github.com/sendgrid/sendgrid-php/blob/master/lib/mail/Attachment.php#L35-L52