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How to add custom fields to REST API responses?
There’s two possible methods for adding custom fields to to REST API responses: By modifying the data via the rest_prepare_post filter. By adding a new field using the register_api_field function and the rest_api_init action.
How to customize the REST API response in WordPress?
Similarly, pages (posts of type “page” in the WordPress database) can be found at yourwebsite.address/wp-json/v2/pages . The REST API supports custom post types, but if the custom post type has been registered without setting the show_in_rest argument to true, the response will return a 404 with the code rest_no_route.
What happens if you change the response to the REST API?
Changing or removing data from core REST API endpoint responses can break plugins or WordPress core behavior, and should be avoided wherever possible. The API exposes many fields on API responses, including things you might not need, or which might not fit into how your site works.
How to create custom endpoints in REST API?
Each route can have any number of endpoints, and for each endpoint, you can define the HTTP methods allowed, a callback function for responding to the request and a permissions callback for creating custom permissions.
Is it possible to remove a field from a REST API?
If you must remove fields from an existing context you should ensure that the behavior is opt-in, for example by providing a custom query parameter to trigger the field removal. The API cannot prevent you from changing responses, but the code is structured to strongly discourage doing so.
How to register custom taxonomy with REST API?
Registering a custom taxonomy with REST API support is very similar to registering a custom post type: pass ‘show_in_rest’ => true in the arguments passed to register_taxonomy. You may optionally pass rest_base to change the base url for the taxonomy’s routes.
Do you need a custom REST API for postmeta?
If you are saving your data in the postmeta table, then using the API’s meta functionality makes the most sense IMO. The only alternative would be saving data in a custom table. If you did that you’d need your own REST API handlers. Personally, if a separate table were warranted, I’d likely not use the API to access it.