Many times I have code and I want to make sure it only runs in a rest api context, or it never runs in a rest context.
I know there are some hooks, but is there a function similar to wp_is_doing_cron?
asked Jan 21, 2019 at 21:13
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2 Answers
I would use :
if ( defined( 'REST_REQUEST' ) && REST_REQUEST ) {...}
Source: https://github.com/WP-API/WP-API/issues/926#issuecomment-162920686
If you take a look to this source code on you will notice the constant is defined before processing anything, I would check for it instead of calling the mentioned function wp_is_json_request()
Why?
if headers were not set when you do the check, it will return false, here is a real example reported for a GET request: https://github.com/WordPress/gutenberg/issues/11327
Yes, wp_is_json_request() can be used to determine if the current request is a REST API request
Checks whether current request is a JSON request, or is expecting a JSON response.
Official docs: https://developer.wordpress.org/reference/functions/wp_is_json_request/
answered Jan 21, 2019 at 21:21
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2That won't work for every case, I would use :
if ( defined( 'JSON_REQUEST' ) && JSON_REQUEST )Source: github.com/WP-API/WP-API/issues/926#issuecomment-162920686– PabamatoCommented Jan 21, 2019 at 22:40 -
@Pabamato which cases won't it work for? Perhaps that should be an answer?– Tom J Nowell ♦Commented Jan 21, 2019 at 23:05
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1I think @Pabamato meant to use
REST_REQUESTand notJSON_REQUEST.– Sally CJCommented Jan 21, 2019 at 23:29 -
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@TomJNowell if headers were not set when you do the check, it will return false, here is a real example reported for a GET request: github.com/WordPress/gutenberg/issues/11327. If you take a look to the source on github.com/WordPress/WordPress/blob/master/wp-includes/… you will notice the constant is defined before processing anything, I would check for it instead of calling the mentioned function– PabamatoCommented Jan 23, 2019 at 3:04