Fix ArgumentError: wrong number of arguments for Cell:: Caching

lib/cell/caching.rb

@@ -43,7 +43,12 @@ def render_state(state, *args, **kws)
       state = state.to_sym
 
       # Before Ruby 3.0, this wasn't necessary, but since cache filters don't receive kwargs as per the "old" (existing cells version) implementation, we can make it one array.
-      cache_filter_args = args + [kws]
+      if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.7.0')
+        cache_filter_args = args + [**kws]
+      else
+        cache_filter_args = args
+        cache_filter_args += [**kws] if kws.size > 0
+      end
 
       return super(state, *args, **kws) unless cache?(state, *cache_filter_args)
 

test/cache_test.rb

@@ -110,4 +110,24 @@ def cache_store
     # cache hit for the second render
     _(SongCell.new.(:show, "Album", title: "IT", part: "1")).must_equal("Album IT 1")
   end
+
+  it "with cache condition helper method" do
+    WithCondition = Class.new(Cell::ViewModel) do
+      cache :show, if: :enable_cache?, expires_in: 10
+
+      def show
+        "Test"
+      end
+
+      def cache_store
+        STORE
+      end
+
+      def enable_cache?
+        true
+      end
+    end
+
+    _(WithCondition.new.(:show)).must_equal("Test")
+  end
 end