1 files changed, 37 insertions, 0 deletions
diff --git a/actionview/lib/action_view/context.rb b/actionview/lib/action_view/context.rb
new file mode 100644
index 0000000000..3c605c3ee3
--- /dev/null
+++ b/actionview/lib/action_view/context.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+module ActionView
+  module CompiledTemplates #:nodoc:
+    # holds compiled template code
+  end
+
+  # = Action View Context
+  #
+  # Action View contexts are supplied to Action Controller to render a template.
+  # The default Action View context is ActionView::Base.
+  #
+  # In order to work with Action Controller, a Context must just include this
+  # module. The initialization of the variables used by the context
+  # (@output_buffer, @view_flow, and @virtual_path) is responsibility of the
+  # object that includes this module (although you can call _prepare_context
+  # defined below).
+  module Context
+    include CompiledTemplates
+    attr_accessor :output_buffer, :view_flow
+
+    # Prepares the context by setting the appropriate instance variables.
+    def _prepare_context
+      @view_flow     = OutputFlow.new
+      @output_buffer = nil
+      @virtual_path  = nil
+    end
+
+    # Encapsulates the interaction with the view flow so it
+    # returns the correct buffer on +yield+. This is usually
+    # overwritten by helpers to add more behavior.
+    def _layout_for(name = nil)
+      name ||= :layout
+      view_flow.get(name).html_safe
+    end
+  end
+end