Hooks & Filters Reference

Custom hooks Jetonomy fires so themes and extensions (including Jetonomy Pro) can extend behavior without editing plugin files. This page currently covers the attachment seam added in 1.8.0. See includes/class-attachments.php and includes/models/class-attachment.php for the source of truth.

Attachment filters

These three filters are the entire seam between free’s basic attachment renderer and Pro’s richer one. Pro hooks all three in jetonomy-pro/includes/extensions/attachments/class-extension.php; a site without Pro still shows images inline and other files as download links.

jetonomy_attachment_card

Filters one attachment’s card HTML before it’s added to the list.

apply_filters( 'jetonomy_attachment_card', string $card, array $attachment, string $object_type, int $object_id ): string

• $card — free’s default <li> markup (image card or file card).
• $attachment — hydrated attachment array, see Attachment::hydrate().
• $object_type — 'post' or 'reply'.
• $object_id — the post or reply id.

Fired once per attachment inside Attachments::render(). Pro returns its own card (lightbox image, inline PDF.js viewer, typed chip) instead of free’s.

add_filter( 'jetonomy_attachment_card', function ( $card, $attachment, $object_type, $object_id ) {
    if ( 'pdf' === $attachment['type'] ) {
        return my_render_pdf_card( $attachment );
    }
    return $card;
}, 10, 4 );

jetonomy_attachments_class

Filters the wrapper <ul> class name, default jt-attachments.

apply_filters( 'jetonomy_attachments_class', string $class ): string

Let a richer renderer swap in its own container class so its own CSS targets the strip, without colliding with free’s default styling.

jetonomy_rest_attachment_data

Filters one attachment’s REST/render data array.

apply_filters( 'jetonomy_rest_attachment_data', array $data, string $object_type, int $object_id ): array

Fired once per row inside Attachment::payload_for() — the same call that backs both the frontend card renderer and the REST payload, so the two can never drift. $data is the shape documented in Attachment::hydrate(). Pro uses this to swap in a gated download URL for non-image files and to add PDF page counts.

REST payload — attachments

As of 1.8.0, jetonomy_rest_prepare_post and jetonomy_rest_prepare_reply (existing REST payload filters) carry an attachments array, injected by Attachments::inject_post_payload() / inject_reply_payload() in includes/class-attachments.php. This is free — a site without Pro still serves attachment data to the mobile app and any REST consumer.

Each item in attachments has this shape:

Key	Type	Description
id	int	WordPress media (attachment) ID.
link_id	int	The jt_attachments row id (use this to unlink).
url	string	Full-size file URL.
thumb	string	Thumbnail/medium image URL, or '' for non-images.
mime	string	MIME type.
name	string	Real filename with extension.
size	int	File size in bytes, 0 if unknown.
type	string	'image', 'pdf', or 'file'.
ext	string	Uppercased file extension (e.g. PDF).
is_image	bool	Convenience flag, true when type === 'image'.

Note the naming reads backwards on purpose: id is the WP media ID, link_id is the jt_attachments row id. That’s the shape the mobile app already consumed from Pro before the table moved to free, and is not worth breaking clients over.