Method Wrapping Exceptions

[egreer]

Safety check when trying to wrap a non existent method and allowing the model to continue to function. This occurs when a table has been migrated and has a new column defined so attribute_names says the attibute exists but the unwrapped_method doesn't exist in

self.class.send(:alias_method, unwrapped_method, method_name)

We are also raising explicit errors for extend_phi_access that try to access a non existant model as we want to continue to raise errors as early as possible instead of relying on the wrap_methods