Add the start of an actual digestor

Author: reeganviljoen

lib/view_component/cache_digestor.rb

@@ -0,0 +1,19 @@
+# # frozen_string_literal: true
+
+module ViewComponent
+  class CacheDigestor
+    @@digest_mutex = Mutex.new
+
+    class << self
+      def digest(name:, finder:, format: nil, dependencies: nil)
+        if dependencies.nil? || dependencies.empty?
+          cache_key = "#{name}.#{format}"
+        else
+          dependencies_suffix = dependencies.flatten.tap(&:compact!).join(".")
+          cache_key = "#{name}.#{format}.#{dependencies_suffix}"
+        end
+        cache_key
+      end
+    end
+  end
+end

lib/view_component/cache_registry.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
- 
+
 module ViewComponent
-  module CachingRegistry # :nodoc:
+  module CachingRegistry
     extend self
 
     def caching?

lib/view_component/cacheable.rb

@@ -1,7 +1,8 @@
 # frozen_string_literal: true
 
-require 'set'
-require 'view_component/cache_registry'
+require "set"
+require "view_component/cache_registry"
+require "view_component/cache_digestor"
 
 module ViewComponent::Cacheable
   extend ActiveSupport::Concern
@@ -25,7 +26,7 @@ def view_cache_dependencies
     def __vc_render_cacheable(rendered_template)
       if __vc_cache_dependencies != [:format, :__vc_format]
         ViewComponent::CachingRegistry.track_caching do
-           template_fragment(rendered_template)
+          template_fragment(rendered_template)
         end
       else
         __vc_render_template(rendered_template)
@@ -43,12 +44,12 @@ def template_fragment(rendered_template)
     end
 
     def read_fragment(rendered_template)
-      Rails.cache.fetch(view_cache_dependencies) 
+      Rails.cache.fetch(component_digest)
     end
 
     def write_fragment(rendered_template)
       content = __vc_render_template(rendered_template)
-      Rails.cache.fetch(view_cache_dependencies) do
+      Rails.cache.fetch(component_digest) do
         content
       end
       content
@@ -60,6 +61,11 @@ def combined_fragment_cache_key(key)
       cache_key.compact!
       cache_key
     end
+
+    def component_digest
+      component_name = self.class.name.demodulize.underscore
+      ViewComponent::CacheDigestor.digest(name: component_name, format: format, finder: @lookup_context, dependencies: view_cache_dependencies)
+    end
   end
 
   class_methods do