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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 |
---|---|
5345 | /** |
5346 | * Filters the capability to read private posts for a custom post type |
5347 | * when generating SQL for getting posts by author. |
5348 | * |
5349 | * @since 2.2.0 |
5350 | * @deprecated 3.2.0 The hook transitioned from "somewhat useless" to "totally useless". |
5351 | * |
5352 | * @param string $cap Capability. |
5353 | */ |
5354 | if ( ! $cap = apply_filters( 'pub_priv_sql_capability', '' ) ) { |
5355 | $cap = current_user_can( $post_type_obj->cap->read_private_posts ); |
5356 | } |
5357 |
|
5358 | // Only need to check the cap if $public_only is false. |
5359 | $post_status_sql = "post_status = 'publish'"; |
5360 | if ( false === $public_only ) { |
5361 | if ( $cap ) { |
5362 | // Does the user have the capability to view private posts? Guess so. |
5363 | $post_status_sql .= " OR post_status = 'private'"; |