Access expose in layout

questions
1

Hello,

I exposed information about if a user is logged in in the base action.rb. I can access those exposes in the template, but not the layout. Is there. a trick I am missing to access the exposed variables in the layout?

# app/view.rb
    expose :authenticated
    expose :current_user

In the individual page the values render

#app/templates/health/status.html.erb
<% if authenticated %>
  <%= current_user.display_name %>
<% else %>
  <%= link_to "Login", routes.path(:user_login) %>
<% end %>

In the layout I get an error about an unknown variable authenticated

#app/templates/layouts/app.html.erb
<% if authenticated %>
  <%= current_user.display_name %>
<% else %>
  <%= link_to "Login", routes.path(:user_login) %>
<% end %>
2

Hey Carolyn, it’s been a while. :wave:

Yes, you need to use the Context for this. Here’s an example (pay attention to how I define the #page_title method) in my Milestoner gem which uses Hanami View for static site generation (i.e. release notes). This then gets used in the page.html.erb layout.

3

Hi Brooke!

Thank you! The context was exactly what I needed.

1 Like
4

Just curious, would the layout: true argument passed to expose also work ? It seems even simpler, but I might be missing things about contexts

expose :authenticated, layout: true
expose :current_user, layout: true
1 Like
5

Just checked and you are correct. An exposure with layout: true does work. Apologies for asking about a documented feature. My only excuse is the search in the guides only returns version V1.3 results, which means I a left to scroll for v2.2 syntax.

6

Thanks for the feedback. I sometimes switch version of doc without noticing too…