Module: Upkeep::Rails::ClientSubscription

Defined in:
lib/upkeep/rails/client_subscription.rb

Constant Summary collapse

CHANNEL = 
"Upkeep::Rails::Cable::Channel"

Class Method Summary collapse

Class Method Details

.inject(html, identity:, subscription:) ⇒ Object 



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# File 'lib/upkeep/rails/client_subscription.rb', line 12

def inject(html, identity:, subscription:)
  marker = marker_for(identity: identity, subscription: subscription)
  insert_before_closing("body", html, marker) ||
    "#{html}#{marker}"
end

.insert_before_closing(tag, html, marker) ⇒ Object 



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# File 'lib/upkeep/rails/client_subscription.rb', line 37

def insert_before_closing(tag, html, marker)
  index = html.rindex(%(</#{tag}>)) || html.rindex(%(</#{tag.upcase}>))
  return unless index

  "#{html[0...index]}#{marker}#{html[index..]}"
end

.marker_for(identity:, subscription:) ⇒ Object

The payload travels as attributes (like turbo-cable-stream-source), never as text content, so it can't show up as page text when JS is absent.



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# File 'lib/upkeep/rails/client_subscription.rb', line 20

def marker_for(identity:, subscription:)
  attributes = {
    "id" => "upkeep-subscription-source-#{subscription.id}",
    "channel" => CHANNEL,
    "subscription-id" => subscription.id,
    "activation-token" => ActivationToken.generate(subscription),
    "stream-name" => identity.stream_name
  }

  [
    %(<upkeep-subscription-source ),
    attributes.map { |name, value| %(#{name}="#{CGI.escapeHTML(value.to_s)}") }.join(" "),
    %( hidden style="display:none" data-upkeep-subscription data-turbo-temporary>),
    %(</upkeep-subscription-source>)
  ].join
end