Method: TrailGuide::Experiment#choose_variant!

Defined in:

lib/trail_guide/experiment.rb

#choose_variant!(override: nil, excluded: false, metadata: nil) ⇒ Object

# File 'lib/trail_guide/experiment.rb', line 157

def choose_variant!(override: nil, excluded: false, metadata: nil)
  return control if TrailGuide.configuration.disabled
  if override.present?
    variant = variants.find { |var| var == override }
    return variant unless configuration.track_override && started?
  else
    return winner if winner?
    return control if excluded
    return control if !started? && configuration.start_manually
    start! unless started?
    return variants.find { |var| var == participant[storage_key] } if participating?
    return control unless TrailGuide.configuration.allow_multiple_experiments == true || !participant.participating_in_active_experiments?(TrailGuide.configuration.allow_multiple_experiments == false) 

    variant = algorithm.choose!(metadata: metadata)
  end

  variant.increment_participation!
  run_callbacks(:on_choose, variant, metadata)
  variant
end