module VestalVersions::Conditions::InstanceMethods

After first determining whether the :if and :unless conditions are satisfied, the original, unaliased create_version? method is called to determine whether a new version should be created upon update of the ActiveRecord::Base instance.

# File lib/vestal_versions/conditions.rb, line 45
def create_version_with_conditions?
  version_conditions_met? && create_version_without_conditions?
end

After first determining whether the :if and :unless conditions are satisfied, the original, unaliased update_version? method is called to determine whther the last version should be updated to include changes merged from the current ActiveRecord::Base instance update.

The overridden update_version? method simply returns false, effectively delegating the decision to whether the :if and :unless conditions are met.

# File lib/vestal_versions/conditions.rb, line 56
def update_version_with_conditions?
  version_conditions_met? && update_version_without_conditions?
end

Simply checks whether the :if and :unless conditions given in the versioned options are met: meaning that all procs in the :if array must evaluate to a non-false, non-nil value and that all procs in the :unless array must all evaluate to either false or nil.

# File lib/vestal_versions/conditions.rb, line 64
def version_conditions_met?
  vestal_versions_options[:if].all?{|p| p.call(self) } && !vestal_versions_options[:unless].any?{|p| p.call(self) }
end