From 1fc93292d5963d46b9a0d1be1b62a8685242cbd1 Mon Sep 17 00:00:00 2001
From: Adam Beynon <adam.beynon@gmail.com>
Date: Fri, 18 Oct 2013 09:25:42 +0100
Subject: [PATCH] Model persistence is now set when first used

---
 opal/vienna/model.rb       | 6 ------
 opal/vienna/persistence.rb | 8 ++++----
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/opal/vienna/model.rb b/opal/vienna/model.rb
index ce0a314..db1cb74 100644
--- a/opal/vienna/model.rb
+++ b/opal/vienna/model.rb
@@ -9,12 +9,6 @@ class Model
     include Eventable
     extend Eventable
 
-    class << self
-      def inherited(subclass)
-        subclass.reset!
-      end
-    end
-
     attr_accessor :id
 
     def self.from_form(form)
diff --git a/opal/vienna/persistence.rb b/opal/vienna/persistence.rb
index e8ab0f7..a1b46d1 100644
--- a/opal/vienna/persistence.rb
+++ b/opal/vienna/persistence.rb
@@ -9,12 +9,12 @@ def adapter(klass = nil)
       end
 
       def identity_map
-        @identity_map
+        @identity_map ||= {}
       end
 
       # Return a simple array of all models
       def all
-        @all
+        @all ||= RecordArray.new
       end
 
       def find(id, &block)
@@ -60,8 +60,7 @@ def fetch(options = {}, &block)
       end
 
       def reset!
-        @identity_map = {}
-        @all = RecordArray.new
+        @identity_map = @all = nil
       end
     end
 
@@ -129,3 +128,4 @@ def did_update
     end
   end
 end
+