wowlixir

wowlixir

Hello,

I have a form inside a LiveComponent. The form has several elements that trigger different events, which in turn update the changeset assign. The automatic re-rendering works fine, but I’d like another function to run before render, right after handle_event, to further update assigns.

My current workaround is to call this update function on every single handle_event (including on "validate", which is assigned to phx-change), but this feels very wrong (repetitive, error-prone) since what I really want is to “observe” changes to the changeset regardless of where the change came from and update other assigns based on that. Is it possible to do it?

Thanks in advance!

Showing Posts 1 to 3

i-n-g-m-a-r

i-n-g-m-a-r

You could try send/2.

# livecomponent
send(self(), {:update, something})
# liveview
def handle_info({:update, x}, socket) do
  {:noreply, assign(socket, something: x)}
end
wowlixir

wowlixir OP

Thank you! But I still have to call this function on every event, right? What I’m looking for is something DRYer, that is automatically called right before render, regardless of where the change to assigns came from.

i-n-g-m-a-r

i-n-g-m-a-r

you always have to return a socket, so you could wrap a function around that, like update(socket).
I’m not sure that’s a good idea though, probably not.

— All posts loaded —

Where Next? Top

Trending in Questions Top

RSP87
I’m working on a project that simulates the bumbl example in the programming phoenix book. It acts almost like an email client. We have a...
New
nseaSeb
Hello, I know there is an approach for handling lists that allows for optimized traversal, but I can’t recall the specific method (somet...
New
kpanic
Hi everyone, I am toying with the idea of building a “match maker” for giving personal help to people that wants to start coding. I sta...
New
brecabral
Documentation While reading the Scoped Routes section, I noticed that the documentation currently refers to a problem without explainin...
New
velrest
So my question is quite simple and i have found no conclusive answer on forum, google or AI. Should we use :erlang.float for Integer to ...
New
asweet-confluent
I recently noticed that Elixir’s Logger defaults its primary log level to :debug when no :logger, :level application configuration is pre...
New
apz
I’m new to elixir and just tried to install the elixirLS extension for VScode(ium) and it is throwing some errors that I would like help ...
New

Other Trending Topics Top

GenericJam
Edit: 2026 May 15 - This post is archived. Mob is alive!! Main docs: mob v0.7.11 — Documentation A bit of explanation for the slightly c...
New
JesseHerrick
Hey, I’m Jesse and I’m the main contributor behind Dexter, a full-featured, lightning-fast Elixir LSP optimized for large codebases. It s...
New
mudasobwa
I am happy to introduce the very α version of the new programming language compiled to BEAM. Welcome Cure. It has literally three kille...
New
marciok
Hi there! We created Gust: A task orchestrator inspired by Airflow. For those who have never heard about Aiflow, it’s a Python-based wor...
New
mhanberg
Hi everyone! The first release candidate for the Expert language server project is now available! We’ve published a press release detai...
New
jimsynz
Beam Bots (or just BB for short) is a framework for building fault-tolerant robotics applications in Elixir using familiar OTP patterns. ...
New

We're in Beta

About us Mission Statement

Options

Thread Display Mode




Thread Preview

Skip Thread Previews