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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 |
|---|---|
| 2176 | * Filter the arguments passed to WP_Query during an AJAX |
| 2177 | * call for querying attachments. |
| 2178 | * |
| 2179 | * @since 3.7.0 |
| 2180 | * |
| 2181 | * @see WP_Query::parse_query() |
| 2182 | * |
| 2183 | * @param array $query An array of query variables. |
| 2184 | */ |
| 2185 | $query = apply_filters( 'ajax_query_attachments_args', $query ); |
| 2186 | $query = new WP_Query( $query ); |
| 2187 | |
| 2188 | $posts = array_map( 'wp_prepare_attachment_for_js', $query->posts ); |
| 2189 | $posts = array_filter( $posts ); |
| 2190 | |
| 2191 | wp_send_json_success( $posts ); |
| 2192 | } |
| 2193 | |
| 2194 | /** |