Adds smarter lookup and fallback to I18n#t helper method

ruby/hyper-i18n/lib/hyperstack/i18n.rb

@@ -1,13 +1,46 @@
 module Hyperstack
   module I18n
-    def t(attribute, opts = {})
-      namespace = self.class.name.underscore.gsub(%r{::|/}, '.')
+    class MissingTranslationError < StandardError; end
 
-      Hyperstack::Internal::I18n.t("#{namespace}.#{attribute}", opts)
+    def t(key, opts = {})
+      namespace = self.class.name.underscore.gsub(%r{::|/}, ".")
+
+      translation = Hyperstack::Internal::I18n.t("#{namespace}.#{key}", opts)
+
+      # If intially not found and has components namespace, see if it's set without it
+      if translation_missing?(translation) && translation =~ /components\./
+        namespace = namespace.gsub("components.", "")
+
+        translation = Hyperstack::Internal::I18n.t("#{namespace}.#{key}", opts)
+      end
+
+      # If translation is still not found, try looking up just the key provided
+      if translation_missing?(translation)
+        translation = Hyperstack::Internal::I18n.t(key, opts)
+      end
+
+      if translation_missing?(translation)
+        raise MissingTranslationError, "Missing translation: #{namespace}.#{key}"
+      end
+
+      translation
+    rescue MissingTranslationError => e
+      # In the case of a missing translation return titleized key
+
+      # HACK: In hyper-operation, String#titleize is patched to return the string as-is,
+      #   so for now we have to manually titleize it
+      # TODO: Switch to use String#titleize if hyper-operation removes that patch
+      key.rpartition(".")[-1].split("_").map(&:capitalize).join(" ")
     end
 
     def l(time, format = :default, opts = {})
       Hyperstack::Internal::I18n.l(time, format, opts)
     end
+
+    protected
+
+    def translation_missing?(translation)
+      translation.is_a?(String) && translation =~ /^translation missing:/
+    end
   end
 end

ruby/hyper-i18n/spec/hyper_i18n_spec.rb

@@ -16,11 +16,15 @@ class TestComponent
             DIV(id: :tp4) { l(Time.parse('1/1/2018 12:45'), '%B %d, %Y at %l:%M %P') }
             DIV(id: :tp5) { MyModel.model_name.human }
             DIV(id: :tp6) { MyModel.human_attribute_name('the_attribute') }
+            DIV(id: :tp7) { t(:hello) }
+            DIV(id: :tp8) { t(:hello_world) }
+            DIV(id: :tp9) { t(:that_other_key) }
           end
         end
       end
     end
   end
+
   [['component rendering', :client_only], ['prerendering', :server_only]].each do |mode, flag|
     it "will translate during #{mode}", prerendering_on: flag == :server_only do
       mount 'Components::TestComponent', {}, render_on: flag
@@ -30,6 +34,9 @@ class TestComponent
       expect(find('#tp4')).to have_content(::I18n.l(Time.parse('1/1/2018 12:45'), format: '%B %d, %Y at %l:%M %P'))
       expect(find('#tp5')).to have_content('My Model')
       expect(find('#tp6')).to have_content('The Attribute')
+      expect(find('#tp7')).to have_content('Hello world')
+      expect(find('#tp8')).to have_content('Hello World')
+      expect(find('#tp9')).to have_content('I am another key')
     end
   end
 end

ruby/hyper-i18n/spec/test_app/config/locales/en.yml

@@ -9,3 +9,5 @@ en:
   components:
     test_component:
       the_key: I am a key
+  test_component:
+    that_other_key: I am another key