Ignore Frontmatter

Author: anderssvendal

config/initializers/actionview.rb

@@ -0,0 +1,19 @@
+# Uncomment if you're not on Rails 7,1, see https://www.shakacode.com/blog/rails-7-1-introduces-config-autoload_lib
+# require 'strip_frontmatter_template_handler'
+
+ActiveSupport.on_load(:action_view) do
+  # Replace the registered template handlers for formats we want to support
+  # Frontmatter
+  [
+    :erb,
+    :slim
+  ].each do |extension|
+    handler = ActionView::Template.registered_template_handler(extension)
+
+    ActionView::Template.register_template_handler(
+      extension,
+      StripFrontmatterTemplateHandler.new(handler)
+    )
+  end
+end
+

lib/strip_frontmatter_template_handler.rb

@@ -0,0 +1,16 @@
+class StripFrontmatterTemplateHandler
+  attr_reader :handler
+
+  def initialize(handler)
+    @handler = handler
+  end
+
+  def call(template, source)
+    # Extract the non-frontmatter part of the template
+    source = RubyMatter.parse(source).content
+
+    # Pass the extracted source to the original handler
+    handler.call(template, source)
+  end
+end
+