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module ActionCable
module Helpers
module ActionCableHelper
# Returns an "action-cable-url" meta tag with the value of the url specified in your
# configuration. Ensure this is above your javascript tag:
#
# <head>
# <%= action_cable_meta_tag %>
# <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
# </head>
#
# This is then used by ActionCable to determine the url of your websocket server.
# Your CoffeeScript can then connect to the server without needing to specify the
# url directly:
#
# #= require cable
# @App = {}
# App.cable = Cable.createConsumer()
#
# Make sure to specify the correct server location in each of your environments
# config file:
#
# config.action_cable.url = "ws://example.com:28080"
def action_cable_meta_tag
tag "meta", name: "action-cable-url", content: Rails.application.config.action_cable.url
end
end
end
end
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