Split i18n YAML files

app/controllers/admin/admin_controller.rb

@@ -6,12 +6,29 @@ class AdminController < ApplicationController
     layout 'admin'
 
     def admin_title model = nil, keys = []
-      return PageTitle.new(['Admin', t(".#{action_name}_title")]).content if model.blank?
+      # controller_name is 'admin', controller_path is 'admin/articles'
+      #    we need 'Article' for the title from models locale YAML
+      controller_name_space  = :admin
+      nested_controller_name = controller_path.split('/').last
+
+      if model.blank?
+        subtitle = t :other, scope: [:activerecord, :models, nested_controller_name.singularize]
+        return PageTitle.new(['Admin', subtitle]).content
+      end
+
       return '' unless keys.all? { |key| model.respond_to? key }
 
       translation_vars = keys.index_with { |key| model.send(key) }
 
-      PageTitle.new(['Admin', t(".#{action_name}_title", **translation_vars)]).content
+      lookup_path = [
+        :views,
+        controller_name_space,
+        nested_controller_name,
+        action_name,
+        :title
+      ].join('.')
+
+      PageTitle.new(['Admin', t(lookup_path, **translation_vars)]).content
     end
 
     def set_published_at

app/controllers/admin/dashboard_controller.rb

@@ -2,7 +2,7 @@ module Admin
   class DashboardController < Admin::AdminController
     # /admin/dashboard
     def index
-      @title = admin_title
+      @title = admin_title :dashboard
     end
 
     # /admin/markdown

app/views/admin/_danger_zone.html.erb

@@ -2,7 +2,7 @@
   <div class="col-12 col-lg-9 offset-lg-3 col-xl-6 offset-xl-6">
 
     <div class="card text-white mb-5" style="margin-top: 10rem">
-      <div class="card-header h3 bg-danger">The Danger Zone™</div>
+      <div class="card-header h3 bg-danger"><%= t '.danger_zone' %></div>
 
       <div class="card-body text-secondary">
         <h2 class="card-title text-danger h5">