module Graphql::Dashboard::Installable

def self.included(child_module)
  child_module.before_action(:check_installed)
end

def check_installed
  if !feature_installed?
    @component_header_html = self.class::INSTALLABLE_COMPONENT_HEADER_HTML
    @component_message_html = self.class::INSTALLABLE_COMPONENT_MESSAGE_HTML
    render "graphql/dashboard/not_installed"
  end
end

def feature_installed?
  raise "Implement #{self.class}#feature_installed? to check whether this should render `not_installed` or not."
end