Backbone.js throws exception with custom endpoint

[lucrus]

You can find a sample plugin attached, that shows the issue. The plugin is supposed to show an alert dialog, but the JS code throws an exception instead.

Please note that I've already tried different combinations of specifying the "wp-api" dependency, and the exception changes as I switch it to a different method (wp_register_script, wp_enqueue_script or both), but still none of them work.

More details here:

​https://wordpress.stackexchange.com/questions/266890/rest-api-backbone-and-custom-endpoint

[lucrus]

Sample plugin that shows the issue

[adamsilverstein]

@lucrus i looked at your code briefly and it looks like you aren't setting up the wp-api client correctly.

Please see the original documentation here: ​https://developer.wordpress.org/rest-api/using-the-rest-api/backbone-javascript-client/

Also, see this ticket which discusses connecting to multiple namespaces - if your endpoint isn't in the wp/v2 namespace, you need to call wp.api.init with the new namespace. #39683

make sure you clear sessionStorage in your browser when making init changes as the client caches the parsed endpoints.

Closing this ticket because I don't think there is a bug, happy to help you get your code working - ping me in the #core-rest-api slack channel or leave a follow up on your existing stackexchange post.