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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 |
|---|---|
| 2229 | * Filter the arguments passed to WP_Query during an AJAX |
| 2230 | * call for querying attachments. |
| 2231 | * |
| 2232 | * @since 3.7.0 |
| 2233 | * |
| 2234 | * @see WP_Query::parse_query() |
| 2235 | * |
| 2236 | * @param array $query An array of query variables. |
| 2237 | */ |
| 2238 | $query = apply_filters( 'ajax_query_attachments_args', $query ); |
| 2239 | $query = new WP_Query( $query ); |
| 2240 | |
| 2241 | $posts = array_map( 'wp_prepare_attachment_for_js', $query->posts ); |
| 2242 | $posts = array_filter( $posts ); |
| 2243 | |
| 2244 | wp_send_json_success( $posts ); |
| 2245 | } |
| 2246 | |
| 2247 | /** |