Configuration/Core/client/html/catalog/filter/tree/levels-always

Summary
The number of levels in the category tree that should be always displayed

client/html/catalog/filter/tree/levels-always =


 * Default:
 * Type: integer - Number of tree levels
 * Since: 2014.03

Description
Usually, only the root node and the first level of the category tree is shown in the frontend. Only if the user clicks on a node in the first level, the page reloads and the sub-nodes of the chosen category are rendered as well.

Using this configuration option you can enforce the given number of levels to be always displayed. The root node uses level 0, the categories below level 1 and so on.

In most cases you can set this value via the administration interface of the shop application. In that case you often can configure the levels individually for each catalog filter.