Passing data from action to channel gracefully

Asked Dec 03 '16 at 19:28

Active Dec 03 '16 at 19:51

Viewed 53 times

How to pass data from Action to Channel in Phoenix.

Let's consider that we have controller Controller and channel Channel, how do send data from Action in Controller to corresponding Channel connection.

The "solutions" we came up with are ugly, we once did it by injecting it into .js file (hackathon), but that's uggly. I was thinking about whether is it possible to pass it via session, because first request of WS is get request, but I didn't found proper solution yet.

Consider authentication example. You acquire data via oauth callback and want to pass it to same user but on socket connection on a particular channel.

The problem is that data is aquired via callback. Let’s say that data is secret. I want it to be used in socket connection in particular channel

Get data from callback (Controller)
Do the thing i dont know
Join channel with data from callback (Channel)

Any ideas how to do it properly?

edited Dec 03 '16 at 19:51

asked Dec 03 '16 at 19:28

Haito

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`broadcast!(MyApp.Endpoint, "some_message", %{body: body})` – Justin Wood Dec 03 '16 at 19:42
I did not meant broadcasting... – Haito Dec 03 '16 at 19:42
Then you need to explain what you are trying to do because that is sending data to the channel. – Justin Wood Dec 03 '16 at 19:43
I have edited the post. – Haito Dec 03 '16 at 19:44
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Pass to a specific topic then. `broadcast!(MyApp.Endpoint, "user:4", %{something: something})` where `4` is the user id that the user is connected to. – Justin Wood Dec 03 '16 at 19:46
Let me epxand the description even more. The problem is I want to use that data to distinguish users. – Haito Dec 03 '16 at 19:49

Passing data from action to channel gracefully

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