How to add new content types in ProcessWire

Let’s say tou want to generate PDFs on the fly in ProcessWire. The application/pdf content type isn’t available in the Files tab of any given template.

To add new content types you need to add code like this in your config.php.

$contentTypes = $config->contentTypes;

$contentTypes['pdf'] = 'application/pdf';

$config->contentTypes = $contentTypes;

Note that you can just change $config->contentTypes directly due to its use of magic methods. If you try it this way you’ll get the following warning: Indirect modification of overloaded property ProcessWire\Config::$contentTypes has no effect