I’m having trouble getting it to work. I have a controller (ScrivWeb.CaseController) that is using Drab.Controller. I also have a CaseCommander module. I have a couple commander functions that work fine so I know it is setup correctly. The issue arises when in CaseController I call
Drab.Core.broadcast_js(Drab.Core.same_controller(ScrivWeb.CaseController), "alert('Broadcased')")
I’m calling it after the create action creates a new case in the controller to test that I can send a message to all connected clients. I get the following error:
[error] #PID<0.936.0> running ScrivWeb.Endpoint terminated
Server: localhost:4000 (http)
Request: POST /cases
** (exit) an exception was raised:
** (ArgumentError) argument error
(stdlib) :ets.lookup(ScrivWeb.PubSub, :broadcast)
(phoenix_pubsub) lib/phoenix/pubsub.ex:288: Phoenix.PubSub.call/3
(drab) lib/drab/core.ex:248: Drab.Core.broadcast_js/3
(scriv) lib/scriv_web/controllers/case_controller.ex:30: ScrivWeb.CaseController.create/2
(scriv) lib/scriv_web/controllers/case_controller.ex:1: ScrivWeb.CaseController.action/2
(scriv) lib/scriv_web/controllers/case_controller.ex:1: ScrivWeb.CaseController.phoenix_controller_pipeline/2
(scriv) lib/scriv_web/endpoint.ex:1: ScrivWeb.Endpoint.instrument/4
(phoenix) lib/phoenix/router.ex:278: Phoenix.Router.__call__/1
(scriv) lib/scriv_web/endpoint.ex:1: ScrivWeb.Endpoint.plug_builder_call/2
(scriv) lib/plug/debugger.ex:99: ScrivWeb.Endpoint."call (overridable 3)"/2
(scriv) lib/scriv_web/endpoint.ex:1: ScrivWeb.Endpoint.call/2
(plug) lib/plug/adapters/cowboy/handler.ex:15: Plug.Adapters.Cowboy.Handler.upgrade/4
(cowboy) /Users/ryanswapp/Documents/code/elixir/test-apps/scriv/deps/cowboy/src/cowboy_protocol.erl:442: :cowboy_protocol.execute/4
Any idea as to what I may be doing wrong?
Also, is it possible to only send a message to clients connected to the page rendered by the index action instead of all clients connected to a page rendered by any action in the CaseController?
Thanks for your help 
Edit: I realized that I need to pass the socket struct to the broadcast_js function rather than the string returned from same_controller(). I’m guessing that socket struct is stored somewhere I can access so I’ll look around the code to find out where you are putting it.
