Guaranteeing that module includer classes have access to logger

[keithrbennett]

I have some modules whose instance methods call logger. If I call include SemanticLogger::Loggable in the module, it makes a logger method accessible to module "class" methods, but not instance methods, since modules don't have instances and the module instance methods become methods of the including class.

So for the logger call not to fail, I need to ensure that any class that includes my module also includes SemanticLogger::Loggable. What's the best way to deal with this? Maybe this?:

module MyModule
# ...
  def included(_includer_module_or_class)
    require 'semantic_logger'
    include SemanticLogger::Loggable
  end
...
end

[keithrbennett]

I asked this question on StackOverflow at https://stackoverflow.com/questions/73676857/guaranteeing-that-module-includer-classes-include-another-module-in-ruby.

The answer was to do this:

def self.included(klass)
  klass.class_exec do
    include SemanticLogger::Loggable
  end
end

[keithrbennett]

This does, however, include the Loggable module in everything that includes the custom module, so if there is a large number of them that don't need it, this would not be ideal.