Plugins » Docker

    included do

      validate :validate_unique_parameter_keys

    end

    def validate_unique_parameter_keys

      parameters_symbol = [:environment_variables, :exposed_ports, :dns]

      parameters_symbol.each do |param_symbol|

        keys  = []

        errors = false

        self.public_send(param_symbol).each do |param|

          errors = duplicate_key?(keys, param)

        end

        self.errors[param_symbol] = _('Please ensure the following parameters are unique') if errors

      end

    end

    def duplicate_key?(keys, param)

      if keys.include?(param.key)

        param.errors[:key] = _('has already been taken')

        return true

      else

        keys << param.key

      end

      false