From e03b4ca05134d6f10aafa38dd2f94313ab0fbcf3 Mon Sep 17 00:00:00 2001
From: Greg Lappen <greg@lapcominc.com>
Date: Thu, 29 Oct 2015 13:53:22 -0400
Subject: [PATCH] Implemented attribute_changed_in_place? on models so
 validates_numericality_of validation will work

---
 lib/her/model/attributes.rb    | 6 ++++++
 spec/model/attributes_spec.rb  | 6 ++++++
 spec/model/validations_spec.rb | 4 +++-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/lib/her/model/attributes.rb b/lib/her/model/attributes.rb
index edf1facb..1a019a4e 100644
--- a/lib/her/model/attributes.rb
+++ b/lib/her/model/attributes.rb
@@ -132,6 +132,12 @@ def get_attribute(attribute_name)
       end
       alias attribute get_attribute
 
+      # Return `true` if the attribute was changed since last read.
+      # This allows validates_numericality_of to work properly.
+      def attribute_changed_in_place?(attribute_name)
+        !changes[attribute_name].nil?
+      end
+
       # Return the value of the model `primary_key` attribute
       def id
         @attributes[self.class.primary_key]
diff --git a/spec/model/attributes_spec.rb b/spec/model/attributes_spec.rb
index 601795f1..c02d8240 100644
--- a/spec/model/attributes_spec.rb
+++ b/spec/model/attributes_spec.rb
@@ -65,6 +65,12 @@
       @new_user.get_attribute(:unknown_method_for_a_user).should be_nil
       @new_user.get_attribute(:'life-span').should == '3 years'
     end
+
+    it "handles attribute_changed_in_place?" do
+      @new_user = Foo::User.new
+      @new_user.fullname = 'Schmoo'
+      @new_user.attribute_changed_in_place?(:fullname).should be_truthy
+    end
   end
 
 
diff --git a/spec/model/validations_spec.rb b/spec/model/validations_spec.rb
index 6e7c7ce0..ea87c757 100644
--- a/spec/model/validations_spec.rb
+++ b/spec/model/validations_spec.rb
@@ -5,9 +5,10 @@
   context "validating attributes" do
     before do
       spawn_model "Foo::User" do
-        attributes :fullname, :email
+        attributes :fullname, :email, :age
         validates_presence_of :fullname
         validates_presence_of :email
+        validates_numericality_of :age
       end
     end
 
@@ -18,6 +19,7 @@
       user.errors.full_messages.should include("Email can't be blank")
       user.fullname = "Tobias Fünke"
       user.email = "tobias@bluthcompany.com"
+      user.age = 35
       user.should be_valid
     end
   end