AJAX: Favorite Products

The favorites feature has one AJAX action. This page documents its exact contract as implemented.

Action

• Action name: rwcv_mark_product_fav
• Registered on wp_ajax_rwcv_mark_product_fav only. It is not registered for wp_ajax_nopriv_, because the button never renders for visitors and the handler writes user meta.

Localized data

The frontend script is localized as rwcv_frontend_action with:

• ajaxurl: the admin-ajax.php URL.
• nonce: a nonce created with the action reign-wc-vendor-nonce.
• read_more: the translatable “Read More” label used by the description toggle.

Request

The script sends a POST request with these fields:

Field	Value
action	rwcv_mark_product_fav
product_id	the product ID
product-action	mark-fav to add, anything else to remove
nonce	rwcv_frontend_action.nonce

Note the field name is product-action (with a hyphen), and the nonce is sent as nonce.

Server handling

The handler reign_wcvendors_mark_product_favorite():

1. Verifies the nonce against reign-wc-vendor-nonce. On failure it responds with wp_send_json_error() and HTTP 403.
2. Requires a logged-in user. If not logged in, it responds with wp_send_json_error() and HTTP 401.
3. On mark-fav, adds the product ID to the user’s rwcv_my_fav_products meta and adds the user ID to the product’s rwcv_fav_product_by_user meta. Otherwise it removes them.
4. Responds with wp_send_json_success().

Response

On success the payload is:

{ "success": true, "data": { "btn-action": "remove-fav" } }

btn-action is the action to use for the next click: remove-fav after adding, mark-fav after removing. On a rejected request the button state is left unchanged by the script.