Module: ActsAsStatused::CanCan

Defined in:
app/models/concerns/acts_as_statused.rb

Instance Method Summary collapse

Instance Method Details

#acts_as_statused(klass, only: nil, except: nil) ⇒ Object

The idea here is you can go forward but you can’t go back.



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# File 'app/models/concerns/acts_as_statused.rb', line 29

def acts_as_statused(klass, only: nil, except: nil)
  raise "klass does not implement acts_as_statused" unless klass.acts_as_statused?

  statuses = klass.const_get(:STATUSES)
  instance = klass.new

  only = Array(only).compact
  except = Array(except).compact

  statuses.each_with_index do |status, index|
    action = status_active_verb(status, instance)

    next if action.blank?
    next if only.present? && !only.include?(action)
    next if except.present? && except.include?(action)

    if index == 0
      can(action, klass) and next
    end

    if status == :approved && statuses.include?(:declined)
      if (position = statuses.index { |status| (status == :approved || status == :declined) }) > 0
        can(action, klass) { |obj| obj.public_send("#{statuses[position-1]}?") || obj.declined? }
        next
      end
    end

    if status == :declined && statuses.include?(:approved)
      if (position = statuses.index { |status| (status == :approved || status == :declined) }) > 0
        can(action, klass) { |obj| obj.public_send("#{statuses[position-1]}?") }
        next
      end
    end

    can(action, klass) { |obj| obj.public_send("#{statuses[index-1]}?") }
  end
end