AR.patch

diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 6076aaf..b859650 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1365,7 +1365,7 @@ MSG
       def initialize(attributes = nil)
         @attributes = attributes_from_column_definition
         @attributes_cache = {}
-        @new_record = true
+        @persisted = false
         @readonly = false
         @destroyed = false
         @marked_for_destruction = false
@@ -1396,7 +1396,7 @@ MSG
         @attributes = coder['attributes']
         @attributes_cache, @previously_changed, @changed_attributes = {}, {}, {}
         @readonly = @destroyed = @marked_for_destruction = false
-        @new_record = false
+        @persisted = true
         _run_find_callbacks
         _run_initialize_callbacks
       end
@@ -1622,7 +1622,7 @@ MSG
         clear_aggregation_cache
         clear_association_cache
         @attributes_cache   = {}
-        @new_record  = true
+        @persisted = false
 
         ensure_proper_type
         populate_with_current_scope_attributes
diff --git a/activerecord/lib/active_record/persistence.rb b/activerecord/lib/active_record/persistence.rb
index 75dba02..ccca98f 100644
--- a/activerecord/lib/active_record/persistence.rb
+++ b/activerecord/lib/active_record/persistence.rb
@@ -4,7 +4,7 @@ module ActiveRecord
     # Returns true if this object hasn't been saved yet -- that is, a record
     # for the object doesn't exist in the data store yet; otherwise, returns false.
     def new_record?
-      @new_record
+      !@persisted
     end
 
     # Returns true if this object has been destroyed, otherwise returns false.
@@ -15,7 +15,7 @@ module ActiveRecord
     # Returns if the record is persisted, i.e. it's not a new record and it was
     # not destroyed.
     def persisted?
-      !(new_record? || destroyed?)
+      @persisted && !destroyed?
     end
 
     # Saves the model.
@@ -94,7 +94,7 @@ module ActiveRecord
       became = klass.new
       became.instance_variable_set("@attributes", @attributes)
       became.instance_variable_set("@attributes_cache", @attributes_cache)
-      became.instance_variable_set("@new_record", new_record?)
+      became.instance_variable_set("@persisted", @persisted)
       became.instance_variable_set("@destroyed", destroyed?)
       became.type = klass.name unless self.class.descends_from_active_record?
       became
@@ -270,7 +270,7 @@ module ActiveRecord
 
       self.id ||= new_id
 
-      @new_record = false
+      @persisted = true
       id
     end
 
diff --git a/activerecord/lib/active_record/session_store.rb b/activerecord/lib/active_record/session_store.rb
index 3400fd6..05e18d5 100644
--- a/activerecord/lib/active_record/session_store.rb
+++ b/activerecord/lib/active_record/session_store.rb
@@ -228,7 +228,7 @@ module ActiveRecord
         @session_id     = attributes[:session_id]
         @data           = attributes[:data]
         @marshaled_data = attributes[:marshaled_data]
-        @new_record     = @marshaled_data.nil?
+        @persisted      = !@marshaled_data.nil?
       end
 
       # Lazy-unmarshal session state.
@@ -252,8 +252,8 @@ module ActiveRecord
         marshaled_data = self.class.marshal(data)
         connect        = connection
 
-        if @new_record
-          @new_record = false
+        if !@persisted
+          @npersisted = false
           connect.update <<-end_sql, 'Create session'
             INSERT INTO #{table_name} (
               #{connect.quote_column_name(session_id_column)},
@@ -272,7 +272,7 @@ module ActiveRecord
       end
 
       def destroy
-        return if @new_record
+        return unless @persisted
 
         connect = connection
         connect.delete <<-end_sql, 'Destroy session'
diff --git a/activerecord/lib/active_record/transactions.rb b/activerecord/lib/active_record/transactions.rb
index 654c475..20da6f4 100644
--- a/activerecord/lib/active_record/transactions.rb
+++ b/activerecord/lib/active_record/transactions.rb
@@ -243,7 +243,7 @@ module ActiveRecord
       with_transaction_returning_status { super }
     end
 
-    # Reset id and @new_record if the transaction rolls back.
+    # Reset id and @persisted if the transaction rolls back.
     def rollback_active_record_state!
       remember_transaction_record_state
       yield
@@ -298,9 +298,9 @@ module ActiveRecord
     # Save the new record state and id of a record so it can be restored later if a transaction fails.
     def remember_transaction_record_state #:nodoc
       @_start_transaction_state ||= {}
-      unless @_start_transaction_state.include?(:new_record)
+      unless @_start_transaction_state.include?(:persisted)
         @_start_transaction_state[:id] = id if has_attribute?(self.class.primary_key)
-        @_start_transaction_state[:new_record] = @new_record
+        @_start_transaction_state[:persisted] = @persisted
       end
       unless @_start_transaction_state.include?(:destroyed)
         @_start_transaction_state[:destroyed] = @destroyed
@@ -324,7 +324,7 @@ module ActiveRecord
           restore_state = remove_instance_variable(:@_start_transaction_state)
           if restore_state
             @attributes = @attributes.dup if @attributes.frozen?
-            @new_record = restore_state[:new_record]
+            @persisted = restore_state[:persisted]
             @destroyed  = restore_state[:destroyed]
             if restore_state[:id]
               self.id = restore_state[:id]