egg Project template engine chooses handlebars, official website to provide egg-view-handlebars this library, but some problems are found in the process of using it:

1. This library defaults to app/view/partials as the local page folder, but I cannot refer to the local page in use, prompting The partial navigation could not be found

 // 
. view
  . index.hbs
  . partials
    . navigation.hbs
//index.hbs
{{> navigation}}

is this because it is written incorrectly? how do I write it?

2. It seems that the template page layout.hbs is not available in the library. How can I register a custom helper in egg?