Contents

module ActiveRecord::Rollout::Flaggable
  module ClassMethods
    # Finds a record by the field set by the :find_by param in
    # `acts_as_flaggable`. If no :find_by param was provided, :id is used.
    #
    # @param [String,Integer] value The value to find the record by.
    def flaggable_find!(value)
      send("find_by_#{@active_record_rollout_flaggable_find_by}!", value)
    end
  end

  # Returns whether or not the object has access to the given feature. If given
  # a block, it will call the block if the user has access to the feature.
  #
  # If an exception is raised in the block, it will increment the
  # `failure_count` of the feature and raise the exception.
  #
  # @example
  #   # Exceptions will be tracked in the `failure_count` of :new_user_interface.
  #   user.has_feature?(:new_user_interface) do
  #     # ...
  #   end
  #
  # @example
  #   # Exceptions will *not* be tracked in the `failure_count` of :new_user_interface.
  #   if user.has_feature?(:new_user_interface)
  #     # ...
  #   end
  #
  # @param [Symbol] feature_name The name of the
  #   {ActiveRecord::Rollout::Feature Feature} being checked.
  # @param [Proc] &block A block to be called if the user is flagged in to the
  #   feature.
  def has_feature?(feature_name, &block)
    if active_record_rollout_features.include? feature_name.to_s
      match = true
    else
      feature = ActiveRecord::Rollout::Feature.find_by_name(feature_name)
      return false unless feature

      opt_out = opt_out_flags.find_by_feature_id(feature.id)
      return false if opt_out

      match = feature.match? self

      if match
        active_record_rollout_features << feature.name.to_s
      end
    end

    if match && block_given?
      begin
        yield
      rescue => e
        feature.increment! :failure_count
        raise e
      end
    end

    match
  end

  def active_record_rollout_features
    @active_record_rollout_features ||= []
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
active_record_rollout-0.0.1	lib/active_record/rollout/flaggable.rb