Notifications with phoenix

Does anyone know of any documentation to know how notifications are handled in Phoenix?

what kind of notifications?

internal pub/sub?
postgres/db notifications?
ios/android notifications?
browser notifications?

or phoenix “flash”



phoenix flash: - first link

browser web push is a bit more complex… look at and the client sample

1 Like

Have a look at the default layout file (app.html.eex) located in

├── app_web
│   │   ├── layout
│   │   │   └── app.html.eex

you will find a section with the following information.

    <main role="main">
      <p class="alert alert-info" role="alert"><%= get_flash(@conn, :info) %></p>
      <p class="alert alert-danger" role="alert"><%= get_flash(@conn, :error) %></p>
      <%= render @view_module, @view_template, assigns %>

the paragraph with the alert tags are what shows the flash messages, you can give it any class that matches the styling you want depending on your CSS


hi. I need some ideas on how to handle postgres/db notifications?

I think he was only providing choices for the OP to open up their question and narrow it down to help them.

You don’t get notifications from postgres/db since it is a synchronous operation. You execute a command, operation and you will receive a result back.

It is up to you how to handle those results


case Db.Driver.ExecuteQuery(my_query) do
  {:success, result} -> show_success_message(result) 
  {:error, message} -> show_error_message(message)

If you are using an ORM like Ecto then the methods for operations and their result types are already defined to help you in their documentation pages.

Hope this helps a bit to your quest.


Checkout Phoenix PubSub - a distributed realtime Publisher/Subscriber service:

  • broadcast event with data in your contexts
  • subscribe event and handle the event as you need.

You can also check these articles…

I use GitHub - bitgamma/boltun: Transforms notifications from the Postgres LISTEN/NOTIFY mechanism into callback execution for pg listener/notifications…

What is the best way to design a notification. Suppose I have a user and post relation. If someone comments on the post user should get a notification.

Is it good to create a notification table to track all the notification. I want to design this simple notification. Can you guide me something to start with