
mattvanhorn
Ash Framework: variable assignment mistake (page 38)
In the “Defining an update action” section
artist = Tunez.Music.get_artist_by_id!("an-artist-id")
should be:
{:ok, artist} = Tunez.Music.get_artist_by_id!("an-artist-id")
Otherwise the next line will fail with an error about resource ID
Most Liked

sevenseacat
Author of Ash Framework
Hi there!
In this case, no it shouldn’t - the bang version of a function (ie. get_artist_by_id!
vs. get_artist_by_id
) will return the object by itself, not as part of an ok
or error
tuple.
I’ll check and see if we need a note clarifying this…
2
Popular Pragmatic Bookshelf topics

Hi Brian,
Looks like the api for tinydb has changed a little. Noticed while working on chapter 7 that the .purge() call to the db throws...
New

Title: Hands-On Rust (Chap 8 (Adding a Heads Up Display)
It looks like
.with_simple_console_no_bg(SCREEN_WIDTH*2, SCREEN_HEIGHT*2...
New

I can’t setup the Rails source code. This happens in a working directory containing multiple (postgres) Rails apps.
With:
ruby-3.0.0
s...
New

I’m new to Rust and am using this book to learn more as well as to feed my interest in game dev. I’ve just finished the flappy dragon exa...
New

The markup used to display the uploaded image results in a Phoenix.LiveView.HTMLTokenizer.ParseError error.
lib/pento_web/live/product_l...
New

Hi,
I am getting an error I cannot figure out on my test.
I have what I think is the exact code from the book, other than I changed “us...
New

Hi, I’ve got a question about the implementation of PubSub when using a Phoenix.Socket.Transport behaviour rather than channels.
Before ...
New

Modern Front-End Development for Rails - application does not start after run bin/setup (page xviii)
After some hassle, I was able to finally run bin/setup, now I have started the rails server but I get this error message right when I vis...
New

@mfazio23
I’ve applied the changes from Chapter 5 of the book and everything builds correctly and runs. But, when I try to start a game,...
New

Getting an error when installing the dependencies at the start of this chapter:
could not compile dependency :exla, "mix compile" failed...
New
Other popular topics

@AstonJ prompted me to open this topic after I mentioned in the lockdown thread how I started to do a lot more for my fitness.
https://f...
New

No chair. I have a standing desk.
This post was split into a dedicated thread from our thread about chairs :slight_smile:
New
New

Saw this on TikTok of all places! :lol:
Anyone heard of them before?
Lite:
New

We’ve talked about his book briefly here but it is quickly becoming obsolete - so he’s decided to create a series of 7 podcasts, the firs...
New

Rails 7 completely redefines what it means to produce fantastic user experiences and provides a way to achieve all the benefits of single...
New

Author Spotlight:
David Bryant Copeland
@davetron5000
We’re so happy to bring you another Author Spotlight, a series where we sit dow...
New

Author Spotlight:
Tammy Coron
@Paradox927
Gaming, and writing games in particular, is about passion, vision, experience, and immersio...
New

Author Spotlight:
Sophie DeBenedetto
@SophieDeBenedetto
The days of the traditional request-response web application are long gone, b...
New

A Brief Review of the Minisforum V3 AMD Tablet.
Update: I have created an awesome-minisforum-v3 GitHub repository to list information fo...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /ruby
- /wasm
- /erlang
- /phoenix
- /keyboards
- /rails
- /js
- /python
- /security
- /go
- /swift
- /vim
- /clojure
- /emacs
- /haskell
- /java
- /onivim
- /svelte
- /typescript
- /crystal
- /c-plus-plus
- /kotlin
- /tailwind
- /gleam
- /ocaml
- /react
- /elm
- /flutter
- /vscode
- /ash
- /opensuse
- /centos
- /php
- /deepseek
- /html
- /scala
- /zig
- /textmate
- /sublime-text
- /debian
- /nixos
- /lisp
- /react-native
- /agda
- /kubuntu
- /arch-linux
- /revery
- /ubuntu
- /manjaro
- /django
- /spring
- /nodejs
- /diversity
- /lua
- /julia
- /c
- /slackware
- /markdown