1 files changed, 31 insertions, 0 deletions
diff --git a/actionpack/lib/abstract_controller/translation.rb b/actionpack/lib/abstract_controller/translation.rb
new file mode 100644
index 0000000000..666e154e4c
--- /dev/null
+++ b/actionpack/lib/abstract_controller/translation.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module AbstractController
+  module Translation
+    # Delegates to <tt>I18n.translate</tt>. Also aliased as <tt>t</tt>.
+    #
+    # When the given key starts with a period, it will be scoped by the current
+    # controller and action. So if you call <tt>translate(".foo")</tt> from
+    # <tt>PeopleController#index</tt>, it will convert the call to
+    # <tt>I18n.translate("people.index.foo")</tt>. This makes it less repetitive
+    # to translate many keys within the same controller / action and gives you a
+    # simple framework for scoping them consistently.
+    def translate(key, options = {})
+      if key.to_s.first == "."
+        path = controller_path.tr("/", ".")
+        defaults = [:"#{path}#{key}"]
+        defaults << options[:default] if options[:default]
+        options[:default] = defaults.flatten
+        key = "#{path}.#{action_name}#{key}"
+      end
+      I18n.translate(key, options)
+    end
+    alias :t :translate
+
+    # Delegates to <tt>I18n.localize</tt>. Also aliased as <tt>l</tt>.
+    def localize(*args)
+      I18n.localize(*args)
+    end
+    alias :l :localize
+  end
+end