Noindex on empty views

This module tells search engines to not index view results if the selected filters returned no result.
These pages don't provide value to users so it is not useful to have them appear in search engine results.

Features

This module automatically adds a noindex robots metatag on views with no result.
It does this only if an exposed filter was selected.

It does not handle facets as they should already not allow users to select choices with no result.

Post-Installation

There is no configuration, the module automatically applies to every view.