Limiting the Upload Location for assets in a Matrix Block In the Dashboard, while editing the settings of a Matrix Block — the instructions for setting Upload Location for an Assets field says Note that the subfolder path can contain variables like {owner.slug} or {owner.author.username}.

To what does owner refer? 

Ideally I want to store these assets in Site Assets/pages/{slug of the page this block is on}  — is owner the page name or the username or what?
owner is the element which contains your Matrix field.

For example, if you attach a Matrix field to a Section, the owner would be the specific Entry in that Section.


{owner.slug} - The slug of your entry.
{owner.author.username} - The username of the person who created the entry.