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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 |
|---|---|
| 2751 | * This filter registers the collection parameter, but does not map the |
| 2752 | * collection parameter to an internal WP_Query parameter. Use the |
| 2753 | * `rest_{$this->post_type}_query` filter to set WP_Query parameters. |
| 2754 | * |
| 2755 | * @since 4.7.0 |
| 2756 | * |
| 2757 | * @param array $query_params JSON Schema-formatted collection parameters. |
| 2758 | * @param WP_Post_Type $post_type Post type object. |
| 2759 | */ |
| 2760 | return apply_filters( "rest_{$this->post_type}_collection_params", $query_params, $post_type ); |
| 2761 | } |
| 2762 | |
| 2763 | /** |
| 2764 | * Sanitizes and validates the list of post statuses, including whether the |
| 2765 | * user can query private statuses. |
| 2766 | * |
| 2767 | * @since 4.7.0 |
| 2768 | * |
| 2769 | * @param string|array $statuses One or more post statuses. |