method_missing for missing attr

#95

lib/ansible_tower_client/base_model.rb

@@ -10,6 +10,18 @@ def self.endpoint
       base_class.to_s.split(/::/)[1].tableize.to_s.freeze
     end
 
+    def method_missing(m, *args, &_block)
+      if self.class.send(:id_attrs).include?(m.to_s)
+        super
+      else
+        self.class.send(:convert_value, m, args, self)
+      end
+    end
+
+    def respond_to_missing?(method, *)
+      !self.class.send(:id_attrs).include?(method.to_s)
+    end
+
     # Constructs and returns a new JSON wrapper class. Pass in a plain
     # JSON string and it will automatically give you accessor methods
     # that make it behave like a typical Ruby object. You may also pass

spec/base_model_spec.rb

@@ -34,8 +34,9 @@
       hash_with_relations = hash.merge("host" => 1, "related" => {"host" => "http://example.com/hosts/1"})
       instance            = described_class.new(api, hash_with_relations)
 
-      expect(instance).to_not     respond_to(:host)
+      expect(instance).to_not respond_to(:host)
       expect(instance.host_id).to eq(1)
+      expect(instance).to respond_to(:anything)
     end
   end