Add ruby_render Liquid tag

bridgetown-core/lib/bridgetown-core/converters/liquid_templates.rb

@@ -79,6 +79,7 @@ def liquid_context
             site:,
             page: payload["page"],
             cached_partials: self.class.cached_partials,
+            resource: document,
           },
           strict_filters: site.config["liquid"]["strict_filters"],
           strict_variables: site.config["liquid"]["strict_variables"],

bridgetown-core/lib/bridgetown-core/tags/ruby_render.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+module Bridgetown
+  module Tags
+    class RubyRender < Liquid::Tag
+      using Bridgetown::Refinements
+
+      # @param tag_name [String] "ruby_render"
+      # @param input [String] The input to the tag: snake-case name of the
+      #   Ruby component, plus initialize args. Example:
+      #     '"card", title: "Hello", footer: "I am a card"'
+      # @param tokens [Hash] A hash of config tokens for Liquid
+      def initialize(tag_name, input, tokens)
+        super
+        @input = input
+
+        @attributes = {}
+        input.scan(Liquid::TagAttributes) do |key, value|
+          @attributes[key.to_sym] = parse_expression(value)
+        end
+      end
+
+      # @param context [Liquid::Context]
+      # @return [String]
+      def render(context)
+        view_context = Bridgetown::RubyTemplateView.new(context.registers[:resource])
+        component_class_name_snakecase = @input.split(",").first
+        component_class_name = component_class_name_snakecase.tr("\"'", "").camelize.strip
+        component_class = self.class.const_get(component_class_name)
+        @attributes.each do |key, value|
+          @attributes[key] = value.evaluate(context) if value.is_a?(Liquid::VariableLookup)
+        end
+        component_instance = component_class.new(**@attributes)
+
+        if component_instance.respond_to?(:render_in)
+          component_instance.render_in(view_context)
+        else
+          component_instance.to_s
+        end
+      end
+    end
+  end
+end
+
+Liquid::Template.register_tag("ruby_render", Bridgetown::Tags::RubyRender)