public function get_loaded_content( string $key, string $before, string $after, string $fallback = '' )
This method allows you to retrieve and filter content from loaded post meta more efficiently than by using the get_meta() method. Before this method is used, load_meta() must be first called to load a specified post's meta into the $loaded_meta property. Otherwise, this method will not function as expected. Loaded meta key values, if set and not empty, are passed through the filter_content() class method, then wrapped in values provide for the $before and $after arguments. This method is most useful when handeling content entered through a TinyMCE field.
(string) (required) The loaded meta key to check and use if is set and not empty.
(string) (required) Markup to include before the processed value of the loaded meta key, if the key is set and not empty, or a fallback value has been provided.
(string) (required) Markup to include after the processed value of the loaded meta key, if the key is set and not empty, or a fallback value has been provided.
(string) (optional) An optional string to fall back to if the loaded meta key isn't set or is empty. If a fallback value is not provided and the key isn't set or is empty, the method will return empty. If used, the $fallback string will not be passed through the filter_content() class method.
For this example, let's imagine that we have a custom post type called
locations. For each location a content editor adds, we've used CMB2 to create a WYSIWYG (TinyMCE) field (stored as post meta with the key
_method_location_short_description) that allows content editors to add a short description for each location, alongside the full description that we'd only show on each location's page (which WordPress' built-in editor field would handle). In the example below, we'll build a layout component that loops through each location, checks to see if a short description has been set, and displays it if available. Otherwise, nothing will be displayed: