2 files changed, 29 insertions, 1 deletions
diff --git a/actionview/lib/action_view/template/error.rb b/actionview/lib/action_view/template/error.rb
index d0ea03e228..aace0be04d 100644
--- a/actionview/lib/action_view/template/error.rb
+++ b/actionview/lib/action_view/template/error.rb
@@ -104,7 +104,7 @@ module ActionView
       def line_number
         @line_number ||=
           if file_name
-            regexp = /#{Regexp.escape File.basename(file_name)}:(\d+)/
+            regexp = /#{Regexp.escape ::File.basename(file_name)}:(\d+)/
             $1 if message =~ regexp || backtrace.find { |line| line =~ regexp }
           end
       end
diff --git a/actionview/lib/action_view/template/file.rb b/actionview/lib/action_view/template/file.rb
new file mode 100644
index 0000000000..487e5735cf
--- /dev/null
+++ b/actionview/lib/action_view/template/file.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+module ActionView #:nodoc:
+  # = Action View File Template
+  class Template #:nodoc:
+    class File #:nodoc:
+      attr_accessor :type, :format
+
+      def initialize(filename)
+        @filename = filename.to_s
+        extname = ::File.extname(filename).delete(".")
+        @type = Template::Types[extname] || Template::Types[:text]
+        @format = @type.symbol
+      end
+
+      def identifier
+        @filename
+      end
+
+      def render(*args)
+        ::File.read(@filename)
+      end
+
+      def formats; Array(format); end
+      deprecate :formats
+    end
+  end
+end