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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 |
|---|---|
| 2148 | * This filter registers the collection parameter, but does not map the |
| 2149 | * collection parameter to an internal WP_Query parameter. Use the |
| 2150 | * `rest_{$this->post_type}_query` filter to set WP_Query parameters. |
| 2151 | * |
| 2152 | * @since 4.7.0 |
| 2153 | * |
| 2154 | * @param $params JSON Schema-formatted collection parameters. |
| 2155 | * @param WP_Post_Type $post_type_obj Post type object. |
| 2156 | */ |
| 2157 | return apply_filters( "rest_{$this->post_type}_collection_params", $params, $post_type_obj ); |
| 2158 | } |
| 2159 | |
| 2160 | /** |
| 2161 | * Sanitizes and validates the list of post statuses, including whether the |
| 2162 | * user can query private statuses. |
| 2163 | * |
| 2164 | * @since 4.7.0 |
| 2165 | * @access public |
| 2166 | * |