Merge pull request rails#5480 from drogus/rendering-issues

Fix for rails#5440

actionpack/lib/abstract_controller/rendering.rb

@@ -105,6 +105,7 @@ def render_to_body(options = {})
     # Find and renders a template based on the options given.
     # :api: private
     def _render_template(options) #:nodoc:
+      lookup_context.rendered_format = nil if options[:formats]
       view_renderer.render(view_context, options)
     end
 

actionpack/test/controller/render_test.rb

@@ -559,6 +559,23 @@ def render_to_string_with_partial
     render :template => "test/hello_world"
   end
 
+  def render_to_string_with_template_and_html_partial
+    @text = render_to_string :template => "test/with_partial", :formats => [:text]
+    @html = render_to_string :template => "test/with_partial", :formats => [:html]
+    render :template => "test/with_html_partial"
+  end
+
+  def render_to_string_and_render_with_different_formats
+    @html = render_to_string :template => "test/with_partial", :formats => [:html]
+    render :template => "test/with_partial", :formats => [:text]
+  end
+
+  def render_template_within_a_template_with_other_format
+    render  :template => "test/with_xml_template",
+            :formats  => [:html],
+            :layout   => "with_html_partial"
+  end
+
   def partial_with_counter
     render :partial => "counter", :locals => { :counter_counter => 5 }
   end
@@ -1268,6 +1285,28 @@ def test_render_to_string_partial
     assert_equal "text/html", @response.content_type
   end
 
+  def test_render_to_string_with_template_and_html_partial
+    get :render_to_string_with_template_and_html_partial
+    assert_equal "**only partial**\n", assigns(:text)
+    assert_equal "<strong>only partial</strong>\n", assigns(:html)
+    assert_equal "<strong>only html partial</strong>\n", @response.body
+    assert_equal "text/html", @response.content_type
+  end
+
+  def test_render_to_string_and_render_with_different_formats
+    get :render_to_string_and_render_with_different_formats
+    assert_equal "<strong>only partial</strong>\n", assigns(:html)
+    assert_equal "**only partial**\n", @response.body
+    assert_equal "text/plain", @response.content_type
+  end
+
+  def test_render_template_within_a_template_with_other_format
+    get :render_template_within_a_template_with_other_format
+    expected = "only html partial<p>This is grand!</p>"
+    assert_equal expected, @response.body.strip
+    assert_equal "text/html", @response.content_type
+  end
+
   def test_partial_with_counter
     get :partial_with_counter
     assert_equal "5", @response.body

actionpack/test/fixtures/layouts/with_html_partial.html.erb

@@ -0,0 +1 @@
+<%= render :partial => "partial_only_html" %><%= yield %>

actionpack/test/fixtures/test/_partial_only_html.html

@@ -0,0 +1 @@
+only html partial

actionpack/test/fixtures/test/with_html_partial.html.erb

@@ -0,0 +1 @@
+<strong><%= render :partial => "partial_only_html" %></strong>

actionpack/test/fixtures/test/with_partial.html.erb

@@ -0,0 +1 @@
+<strong><%= render :partial => "partial_only" %></strong>

actionpack/test/fixtures/test/with_partial.text.erb

@@ -0,0 +1 @@
+**<%= render :partial => "partial_only" %>**

actionpack/test/fixtures/test/with_xml_template.html.erb

@@ -0,0 +1 @@
+<%= render :template => "test/greeting", :formats => :xml %>