putting subscribe_to in js.erb template

[ajbraus]

I want to start listening to a new private_pub faye channel after its first message is created. That means I want to put the subscribe_to tag inside of the messages#create.js.erb template, but the subscribe_to method outputs this:

<script type="text/javascript">PrivatePub.sign({DATA});</script>

the script inside the .js.erb template does not work.

any work around?

http://stackoverflow.com/questions/20983337/starting-a-private-pub-private-chat-room-rails-4

[gregmolnar]

You don't need the script tags in the js.erb file. Use just

PrivatePub.sign({DATA});

[ajbraus]

I tried that but it doesn't keep listening. It listens once, publish once, but then the next time I publish to the same channel it doesn't work.

PrivatePub.sign({ "server":"http://localhost:9292/faye/faye", "timestamp":1389913205, "channel": "/chat_room/2", "signature":"blahblahblah" });

I am creating this with ruby like this:

PrivatePub.sign({ "server":"http://localhost:9292/faye/faye", "timestamp":<%= Time.now.to_i %>, "channel": "<%= @chat_room.channel_path %>", "signature":"ae161991ecad6f49a179e90ea9e1b716202af937" });

publishing like this in create.js

<% publish_to @chat_room.channel_path do %> $('#messages').prepend("<%= j render partial: 'messages/message', :object => @message %>"); <% end %>

[ajbraus]

This is still not working. I think the problem is my "signature" - What should the signature value be?

[gregmolnar]

@ajbraus it should be the secret token.

[ajbraus]

Won't this be public then?

When I refresh and it is working it is not the secret token.

On Jan 23, 2014, at 12:00 AM, Greg Molnar notifications@github.com wrote:

@ajbraus it should be the secret token.

— Reply to this email directly or view it on GitHub.

[gregmolnar]

You are right. I forgot there is some hashing to do:

Digest::SHA1.hexdigest([secret_token, channel, timestamp].join)

[ajbraus]

Thanks! This is not working :o( is my syntax right?

"signature": "<%= Digest::SHA1.hexdigest([ ENV['PRIVATE_PUB_SECRET'], @chat_room.channel_path, Time.now.to_i ].join) %>"

~Adam Braus 608-770-0230

On Jan 23, 2014, at 8:42 AM, Greg Molnar notifications@github.com wrote:

Digest::SHA1.hexdigest([secret_token, channel, timestamp].join)

[gregmolnar]

<% timestamp = Time.now.to_i %>
PrivatePub.sign({ 
"server":"http://localhost:9292/faye/faye",
"timestamp":<% timestamp %>,
"channel": "<%= @chat_room.channel_path %>",
"signature": "<%= Digest::SHA1.hexdigest([ENV['PRIVATE_PUB_SECRET'], @chat_room.channel_path, timestamp].join) %>"
});

The timestamps has to match.

[ajbraus]

Good point!

But still not working. I cleaned it up even more and still not working:

<% timestamp = Time.now.to_i %> <% channel = @chat_room.channel_path %> <% signature = Digest::SHA1.hexdigest([ENV['PRIVATE_PUB_SECRET'], channel, timestamp].join) %>

PrivatePub.sign({ "server":"http://localhost:3000/faye/faye", "timestamp":<%= timestamp %>, "channel": "<%= channel %>", "signature": "<%= signature %>" });

When I compare it with what the subscribe_to method outputs there is no difference. Maybe the problem is in the signature logic? I've tried making channel a string and not a string. The pub secret is definitely right - I'm using dot-env gem to get env variables.

~Adam Braus 608-770-0230

On Jan 23, 2014, at 12:25 PM, Greg Molnar notifications@github.com wrote:

<% timestamp = Time.now.to_i %> PrivatePub.sign({ "server":"http://localhost:9292/faye/faye", "timestamp":<% timestamp %>, "channel": "<%= @chat_room.channel_path %>", "signature": "<%= Digest::SHA1.hexdigest([ENV['PRIVATE_PUB_SECRET'], @chat_room.channel_path, timestamp].join) %>" });

[gregmolnar]

You can check the signature logic here: https://github.com/ryanb/private_pub/blob/master/lib/private_pub.rb#L60 The difference is what you use for the timestamp but I don't think that should make any difference. Give it a try though.

[ajbraus]

Still not working. hmmm

  <% timestamp = (Time.now.to_f * 1000).round %>
  <% channel = @chat_room.channel_path %>
  <% signature = Digest::SHA1.hexdigest([ENV['PRIVATE_PUB_SECRET'], "#{channel}", timestamp].join) %>

  PrivatePub.sign({ 
  "server":"http://app_name.herokuapp.com/faye/faye",
  "timestamp":<%= timestamp %>,
  "channel": "<%= channel %>",
  "signature": "<%= signature %>"
  });

[gregmolnar]

Shouldn't the server URL be just "server":"http://app_name.herokuapp.com/faye/" ?

[ajbraus]

The second faye was to solve a different error

development:
  server: "//app_name.herokuapp.com/faye/faye"
  secret_token: <%= ENV["PRIVATE_PUB_SECRET"] %>
  signature_expiration: 3600 # one hour

I made a mistake disclosing the app name, could you edit your comment to be "app_name.herokuapp.com"

thanks!

[gregmolnar]

I removed it. I have no idea why it doesn't work for you. Next week I will try to set some time aside and debug it.

[ajbraus]

I definitely appreciate it. The goal is really to be able to be looking at a resource (a blog post for example) and then "strike up" a chat about it. So the user creates a message which creates a parent chat_room. Maybe my architecture is just wrong. Should I try to start a conversation without a pre-exisiting chat_room?

[gregmolnar]

You could create a channel for each blog post in your example and when the and subscribe the user to the channel when he/she opens the page. But what if they don't want to chat about that particular topic? :)

[ajbraus]

Exactly. If they don't want to strike up a conversation, I'll have these orphaned chat rooms. Also I only have 1-on-1 chats, so I'd have to make a billion chats. I'd rather just strike up the conversation and at the same time subscribe to all future messages.

[gregmolnar]

It should work with that workflow just there has to be a mistake in your setup or a bug in private_pub.

[ajbraus]

Maybe there should be a way to access the subscribe_to method in create.js?

[gregmolnar]

There should be a lot of new feature but Ryan is vanished. I may fork the project and start to support it.

[ajbraus]

Yeah where did Ryan go? I think private_pub is a huge attribute for rails, so it would be great to support it.

~Adam Braus 608-770-0230

On Feb 18, 2014, at 1:14 PM, Greg Molnar notifications@github.com wrote:

There should be a lot of new feature but Ryan is vanished. I may fork the project and start to support it.

— Reply to this email directly or view it on GitHub.

[gregmolnar]

I dunno where is he at. The last announcement on Railscast is from September 2013. He said he need some time off.

[ajbraus]

Any word on putting the subscribe_to helper into the create.js template? Thx!

[ajbraus]

Gregmolnar - I figured out a solution to this where i don't have to put the subscribe_to inside of the create.js template.

[ajbraus]

Just create the chat_room first before creating the first message

[gregmolnar]

I am glad you resolved it!

[RavWar]

Had the same issue, got it working with this: <%= raw strip_tags subscribe_to('/messages') %>