Namespaced record class breaks inet_contains

[znakaska]

When calling .where.inet_contains on a namespaced model, an exception is raised:

My::Namespaced::Model.where.inet_contains(cidr: '127.0.0.1')

# uninitialized constant MyNamespacedModel (NameError)

The following line tries to determine record class from table name:

ActiveRecordExtended/lib/active_record_extended/arel/visitors/postgresql_decorator.rb

Lines 17 to 19 in aca74ee

	left_column = object.left.relation.name.classify.constantize.columns.detect do |col|
	matchable_column?(col, object)
	end