Instance variable in partial view - css

Question

I have a navbar that is a partial view that I need to render on a devise page for the user to edit their profile. As it is, I only have one page, but adding the path to perform account maintenance has messed up my navbar loading because of the instance variable not being present. How can I get a global instance variable that works across the board for my navbar, no matter what?
application_helper.rb
def get_company
#company = current_user.company
end
def get_locations(company)
#locations = if #company
current_user.company_locations.order(:name)
else
[]
end
end
pages_controller.rb
def home
#company = get_company
#locations = get_locations(#company)
#reports = if #company
#company.reports.order("created_at DESC").limit(5)
else
[]
end
end
views/devise/registrations/edit.html.erb
<%= render partial: "pages/navigation" %>
... devise form ....
pages/_navigation.html.erb
<li class="right-menu-item">
<button class="btn dropdown-toggle " type="button" id="dropdownMenu1" data-toggle="dropdown">
<% if #company %>
<%= #company.name %>
<% else %>
<%= current_user.email %>
<% end %>
<span class="caret"></span>
</button>
<ul class="dropdown-menu dropdown-menu-right" role="menu" aria-labelledby="dropdownMenu1">
<% #locations.each do |location| %>
<li role="presentation">
<%= link_to root_path(location_id: location.id), role: "menuitem", tabindex: "-1" do %>
<%= image_tag "check-green.svg" if location == #location %>
<span><%= location.name %></span>
<% end %>
</li>
<% end %>
</ul>
Where the issue lies:
What am I missing here to get this working across all views?
Thanks!

Answer 1

Ok, seems that Where is the controller of Devise ? how to add data from other models in users/edit page? was helpful. I had to do the following to make this work in the partial for the devise views:
rails g devise:controllers users -c registrations
which made a registrations controller under controllers/users/registrations.rb, then i was able to add the instance variables I needed do the edit method:
def edit
#company = get_company
#locations = get_locations(#company)
end
Had to also change the route.rb file around a little to facilitate the new controller:
devise_for :users, skip: [:sessions],
controllers: {
registrations: 'users/registrations'
}