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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 |
---|---|
3064 | * Filters the arguments passed to WP_Query during an Ajax |
3065 | * call for querying attachments. |
3066 | * |
3067 | * @since 3.7.0 |
3068 | * |
3069 | * @see WP_Query::parse_query() |
3070 | * |
3071 | * @param array $query An array of query variables. |
3072 | */ |
3073 | $query = apply_filters( 'ajax_query_attachments_args', $query ); |
3074 | $attachments_query = new WP_Query( $query ); |
3075 | update_post_parent_caches( $attachments_query->posts ); |
3076 |
|
3077 | $posts = array_map( 'wp_prepare_attachment_for_js', $attachments_query->posts ); |
3078 | $posts = array_filter( $posts ); |
3079 | $total_posts = $attachments_query->found_posts; |
3080 |
|
3081 | if ( $total_posts < 1 ) { |
3082 | // Out-of-bounds, run the query again without LIMIT for total count. |