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How to make a REST API request in WordPress?
The route for a request, by default, will match the server environment variable for path info; $_SERVER [‘PATH_INFO’]. When you make an HTTP request to a route of the WordPress REST API, the generated WP_REST_Request object will be made to match that path, which will hopefully then be matched to a valid endpoint.
How are URL parameters generated in WP _ rest _ request?
URL parameters are automatically generated in a WP_REST_Request from the path variables in the requested route. What does that mean? Let’s look at this route, which grabs individual books by id: /my-namespace/v1/books/ (?P \\d+).
Where are the query parameters stored in PHP?
We could access those values in a callback like this: $request [‘per_page’], and $request [‘genre’]` ( assuming $request is the name of the argument we are using ). If you are familiar with PHP you have probably used query parameters in your web applications. In PHP, the query parameters get stored in the superglobal $_GET.
How are body parameters used in REST API?
Body parameters can and should be used for POST, PUT, and DELETE requests. File parameters in a WP_REST_Request object are stored when the request uses a special content type header; multipart/form-data. The file data can then be accessed from the request object using $request->get_file_params ().
How are request headers used in the REST API?
Request headers do not necessarily interact with our endpoints directly, but the information in the headers helps WordPress know what to do. To pass in data that we want our endpoints to interact with we want to use parameters. When making requests to the WordPress REST API, most of the additional data passed in will take on the form of parameters.
How does the WP _ REST _ server class work?
When an HTTP request is made to an endpoint of the API, the API will automatically create an instance of the WP_REST_Request class, matching the provided data. The response object is auto-generated in WP_REST_Server ‘s serve_request () method.
What are the main methods of the REST API?
HTTP methods are sometimes referred to as HTTP verbs. They are simply just different ways to communicate via HTTP. The main ones used by the WordPress REST API are: GET should be used for retrieving data from the API. POST should be used for creating new resources (i.e users, posts, taxonomies). PUT should be used for updating resources.