Remove remaining coupling with AV in MimeResponds

actionpack/lib/abstract_controller/rendering.rb

@@ -32,6 +32,8 @@ module Rendering
     def render(*args, &block)
       options = _normalize_render(*args, &block)
       self.response_body = render_to_body(options)
+      _process_format(rendered_format)
+      self.response_body
     end
 
     # Raw rendering of a template to a string.
@@ -98,6 +100,11 @@ def _process_options(options)
       options
     end
 
+    # Process the rendered format.
+    # :api: private
+    def _process_format(format)
+    end
+
     # Normalize args and options.
     # :api: private
     def _normalize_render(*args, &block)

actionpack/lib/action_controller/metal/mime_responds.rb

@@ -364,9 +364,7 @@ def retrieve_collector_from_mimes(mimes=nil, &block) #:nodoc:
       format = collector.negotiate_format(request)
 
       if format
-        self.content_type ||= format.to_s
-        lookup_context.formats = [format.to_sym]
-        lookup_context.rendered_format = lookup_context.formats.first
+        _process_format(format)
         collector
       else
         raise ActionController::UnknownFormat

actionpack/lib/action_controller/metal/rendering.rb

@@ -12,8 +12,6 @@ def process_action(*) #:nodoc:
     def render(*args) #:nodoc:
       raise ::AbstractController::DoubleRenderError if self.response_body
       super
-      self.content_type ||= rendered_format.to_s
-      self.response_body
     end
 
     # Overwrite render_to_string because body can now be set to a rack body.
@@ -38,6 +36,11 @@ def render_to_body(options = {})
 
     private
 
+    def _process_format(format)
+      super
+      self.content_type ||= format.to_s
+    end
+
     # Normalize arguments by catching blocks and setting them on :update.
     def _normalize_args(action=nil, options={}, &blk) #:nodoc:
       options = super

actionview/lib/action_view/rendering.rb

@@ -95,6 +95,13 @@ def rendered_format
 
     private
 
+      # Assign the rendered format to lookup context.
+      def _process_format(format) #:nodoc:
+        super
+        lookup_context.formats = [format.to_sym]
+        lookup_context.rendered_format = lookup_context.formats.first
+      end
+
       # Normalize args by converting render "foo" to render :action => "foo" and
       # render "foo/bar" to render :file => "foo/bar".
       # :api: private