Set current_engine on the context, not self, since we dup self and use that for each render loop. Closes #860

CHANGELOG.md

@@ -9,6 +9,13 @@
 * Fully tested on JRuby
 * Build defaults to --clean
 
+
+
+3.1.0.rc.4
+===
+
+* Blocks with different templating languages than their layout now work as expected. #860
+
 3.1.0.rc.2
 ===
 

middleman-core/features/markdown.feature

@@ -12,12 +12,12 @@ Feature: Markdown support
     When I go to "/smarty_pants.html"
     Then I should see "“Hello”"
 
-  Scenario: Links with block syntax in ERB layout erb
+  Scenario: Links with block syntax in ERB layout (erb)
-    Given the Server is running at "markdown-app"
+    Given the Server is running at "more-markdown-app"
     When I go to "/with_layout_erb.html"
     Then I should see '<a href="layout_block_link.html">'
   
-  Scenario: Links with block syntax in ERB layout
+  Scenario: Links with block syntax in ERB layout and markdown
-    Given the Server is running at "markdown-app"
+    Given the Server is running at "more-markdown-app"
     When I go to "/with_layout.html"
     Then I should see '<a href="layout_block_link.html">'

middleman-core/lib/middleman-core/core_extensions/rendering.rb

@@ -123,12 +123,9 @@ module Middleman
         # @param [Hash] opts
         # @return [String]
         def render_template(path, locs={}, opts={}, blocks=[])
-          # Detect the remdering engine from the extension
           extension = File.extname(path)
           engine = extension[1..-1].to_sym
 
-          # Store last engine for later (could be inside nested renders)
-          @current_engine, engine_was = engine, @current_engine
           if defined?(::I18n)
             old_locale = ::I18n.locale
             ::I18n.locale = opts[:lang] if opts[:lang]
@@ -171,7 +168,6 @@ module Middleman
           # Pop all the saved variables from earlier as we may be returning to a
           # previous render (layouts, partials, nested layouts).
           ::I18n.locale = old_locale if defined?(::I18n)
-          @current_engine = engine_was
           @content_blocks = nil
           @current_locs = nil
           @current_opts = nil
@@ -238,6 +234,13 @@ module Middleman
         def render_individual_file(path, locs = {}, opts = {}, context = self, &block)
           path = path.to_s
 
+          # Detect the remdering engine from the extension
+          extension = File.extname(path)
+          engine = extension[1..-1].to_sym
+
+          # Store last engine for later (could be inside nested renders)
+          context.current_engine, engine_was = engine, context.current_engine
+          
           # Save current buffer for later
           @_out_buf, _buf_was = "", @_out_buf
 
@@ -283,6 +286,7 @@ module Middleman
         ensure
           # Reset stored buffer
           @_out_buf = _buf_was
+          context.current_engine = engine_was
         end
 
         # Get the template data from a path
@@ -394,13 +398,13 @@ module Middleman
           # Save current buffer for later
           @_out_buf, _buf_was = "", @_out_buf
 
-          layout_path = locate_layout(layout_name, current_engine)
+          layout_path = locate_layout(layout_name, self.current_engine)
 
           extension = File.extname(layout_path)
           engine = extension[1..-1].to_sym
 
           # Store last engine for later (could be inside nested renders)
-          @current_engine, engine_was = engine, @current_engine
+          self.current_engine, engine_was = engine, self.current_engine
 
           begin
             content = if block_given?
@@ -415,13 +419,19 @@ module Middleman
 
           concat_safe_content render_individual_file(layout_path, @current_locs || {}, @current_opts || {}, self) { content }
         ensure
-          @current_engine = engine_was
+          self.current_engine = engine_was
         end
 
         # The currently rendering engine
         # @return [Symbol, nil]
         def current_engine
-          @current_engine ||= nil
+          @_current_engine ||= nil
+        end
+
+        # The currently rendering engine
+        # @return [Symbol, nil]
+        def current_engine=(v)
+          @_current_engine = v
         end
 
         # Find a template on disk given a output path

middleman-core/lib/middleman-more/core_extensions/default_helpers.rb

@@ -42,6 +42,22 @@ class Middleman::CoreExtensions::DefaultHelpers < ::Middleman::Extension
       mark_safe(super(name, mark_safe(content), options, &block))
     end
 
+    def capture_html(*args, &block)
+      handler = auto_find_proper_handler(&block)
+      captured_block, captured_html = nil, ""
+      if handler && handler.is_type? && handler.block_is_type?(block)
+        captured_html, captured_block = handler.capture_from_template(*args, &block)
+      end
+      # invoking the block directly if there was no template
+      captured_html = block_given? && ( captured_block || block.call(*args) )  if captured_html.blank?
+      captured_html
+    end
+
+    def auto_find_proper_handler(&block)
+      engine = block_given? ? File.extname(block.source_location[0])[1..-1].to_sym : current_engine
+      ::Padrino::Helpers::OutputHelpers.handlers.map { |h| h.new(self) }.find { |h| h.engines.include?(engine) && h.is_type? }
+    end
+
     # Disable Padrino cache buster
     def asset_stamp
       false