2015-09-03 20:17:48 -04:00
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module ActionCable
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module Helpers
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module ActionCableHelper
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# Returns an "action-cable-url" meta tag with the value of the url specified in your
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# configuration. Ensure this is above your javascript tag:
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#
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# <head>
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# <%= action_cable_meta_tag %>
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# <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
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# </head>
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#
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2016-02-13 21:05:04 -05:00
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# This is then used by Action Cable to determine the url of your WebSocket server.
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2015-09-03 20:17:48 -04:00
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# Your CoffeeScript can then connect to the server without needing to specify the
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# url directly:
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#
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# #= require cable
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# @App = {}
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# App.cable = Cable.createConsumer()
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#
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# Make sure to specify the correct server location in each of your environments
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# config file:
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#
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2016-02-04 22:33:46 -05:00
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# config.action_cable.mount_path = "/cable123"
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# <%= action_cable_meta_tag %> would render:
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# => <meta name="action-cable-url" content="/cable123" />
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#
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# config.action_cable.url = "ws://actioncable.com"
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# <%= action_cable_meta_tag %> would render:
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# => <meta name="action-cable-url" content="ws://actioncable.com" />
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#
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2015-09-03 20:17:48 -04:00
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def action_cable_meta_tag
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2016-02-04 22:33:46 -05:00
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tag "meta", name: "action-cable-url", content: (
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ActionCable.server.config.url ||
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ActionCable.server.config.mount_path ||
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raise("No Action Cable URL configured -- please configure this at config.action_cable.url")
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)
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2015-09-03 20:17:48 -04:00
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end
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end
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end
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end
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