fluke/devops-service/db/validators/deploy_env/stack_template.rb

module Validators
  class DeployEnv::StackTemplate < Base

    def valid?
      return true unless @model.stack_template

      available_stack_templates.detect do |template|
        template['id'] == @model.stack_template
      end
    end

    def message
      "Invalid stack template '#{@model.stack_template}'."
    end

    private

    def available_stack_templates
      # map to hash to simplify mocks. Later replace this method with something more suitable
      Devops::Db.connector.stack_templates.map(&:to_hash)
    end

  end
end