WP REST API查询多种帖子类型

Question

I am trying to retrieve posts from multiple post types using WP REST API. I have no problem getting a feed from one post type book by doing this:

http://example.com/wp-json/posts?type=book&filter[posts_per_page]=10

Now I want to extend the feed to get book and movie . This only gives me the last specified type:

http://example.com/wp-json/posts?type=book&type=movie&filter[posts_per_page]=10

This gives me an error:

http://example.com/wp-json/posts?type[]=book&type[]=movie&filter[posts_per_page]=10

How should I be handling this?

Thanks!

Edit: Fixed syntax to match what I actually have. Here are the errors that I get when this syntax http://example.com/wp-json/posts?type[]=book&type[]=movie&filter[posts_per_page]=10 is used:

Warning: urlencode() expects parameter 1 to be string, array given in /home/newbreak/public_html/wp-includes/formatting.php on line 4128

Warning: Cannot modify header information - headers already sent by (output started at /home/newbreak/public_html/wp-includes/formatting.php:4128) in /home/newbreak/public_html/wp-content/plugins/json-rest-api/lib/class-wp-json-server.php on line 587

Warning: Cannot modify header information - headers already sent by (output started at /home/newbreak/public_html/wp-includes/formatting.php:4128) in /home/newbreak/public_html/wp-content/plugins/json-rest-api/lib/class-wp-json-server.php on line 587

Warning: Cannot modify header information - headers already sent by (output started at /home/newbreak/public_html/wp-includes/formatting.php:4128) in /home/newbreak/public_html/wp-content/plugins/json-rest-api/lib/class-wp-json-server.php on line 587

Warning: Cannot modify header information - headers already sent by (output started at /home/newbreak/public_html/wp-includes/formatting.php:4128) in /home/newbreak/public_html/wp-content/plugins/json-rest-api/lib/class-wp-json-server.php on line 587

Warning: Cannot modify header information - headers already sent by (output started at /home/newbreak/public_html/wp-includes/formatting.php:4128) in /home/newbreak/public_html/wp-content/plugins/json-rest-api/lib/class-wp-json-server.php on line 587

Warning: Cannot modify header information - headers already sent by (output started at /home/newbreak/public_html/wp-includes/formatting.php:4128) in /home/newbreak/public_html/wp-content/plugins/json-rest-api/lib/class-wp-json-server.php on line 587

I only get the errors when I send the type as an array type[] .

Answer 1

You can also try registering an additional endpoint so you don't have to add as many query arguments in each request. I'm using the latest version of the WP REST API plugin.

So for a custom content type called "movies", you could have an endpoint like wp-json/wp/v2/movies

add_action('rest_api_init', 'register_movies');

function register_movies() {
  $movies_custom_fields = array(
    'director',
    'genre'
  );
  foreach ($movies_custom_fields as $key) {
     register_rest_field('movies', $key, array(
     'schema'          => null,
     'get_callback'    => 'get_movies_data',
   ));
  }
}

function get_movies_data( $object, $field_name, $request ) {
   return get_post_meta( $object[ 'id' ], $field_name, true );
}

More documentation on adding custom endpoints for different content types at the WP REST API V2 documentation site.

Answer 2

We had a similar requirement, where we only had a slug and need to query / find the post/page/article data.

We have build a wordpress api v2 plugin to query multiple post types.

Here is the plugin code https://github.com/elevati/wp-api-multiple-posttype