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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
2267 | * Filter the arguments passed to WP_Query during an AJAX |
2268 | * call for querying attachments. |
2269 | * |
2270 | * @since 3.7.0 |
2271 | * |
2272 | * @see WP_Query::parse_query() |
2273 | * |
2274 | * @param array $query An array of query variables. |
2275 | */ |
2276 | $query = apply_filters( 'ajax_query_attachments_args', $query ); |
2277 | $query = new WP_Query( $query ); |
2278 |
|
2279 | $posts = array_map( 'wp_prepare_attachment_for_js', $query->posts ); |
2280 | $posts = array_filter( $posts ); |
2281 |
|
2282 | wp_send_json_success( $posts ); |
2283 | } |
2284 |
|
2285 | /** |