From c2b075bed084a59a674469d09db016aaa3365c2e Mon Sep 17 00:00:00 2001
From: Joshua Peek <josh@joshpeek.com>
Date: Fri, 24 Jul 2009 00:25:27 -0500
Subject: Concernify AR AttributeMethods

---
 .../lib/active_record/attribute_methods/query.rb   | 37 ++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 activerecord/lib/active_record/attribute_methods/query.rb

(limited to 'activerecord/lib/active_record/attribute_methods/query.rb')

diff --git a/activerecord/lib/active_record/attribute_methods/query.rb b/activerecord/lib/active_record/attribute_methods/query.rb
new file mode 100644
index 0000000000..a949d80120
--- /dev/null
+++ b/activerecord/lib/active_record/attribute_methods/query.rb
@@ -0,0 +1,37 @@
+module ActiveRecord
+  module AttributeMethods
+    module Query
+      extend ActiveSupport::Concern
+
+      included do
+        attribute_method_suffix "?"
+      end
+
+      def query_attribute(attr_name)
+        unless value = read_attribute(attr_name)
+          false
+        else
+          column = self.class.columns_hash[attr_name]
+          if column.nil?
+            if Numeric === value || value !~ /[^0-9]/
+              !value.to_i.zero?
+            else
+              return false if ActiveRecord::ConnectionAdapters::Column::FALSE_VALUES.include?(value)
+              !value.blank?
+            end
+          elsif column.number?
+            !value.zero?
+          else
+            !value.blank?
+          end
+        end
+      end
+
+      private
+        # Handle *? for method_missing.
+        def attribute?(attribute_name)
+          query_attribute(attribute_name)
+        end
+    end
+  end
+end
-- 
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