DestyNova
Book-programming-phoenix-liveview:b0.14-errata-p1-131
- p2:
we update a yet another element. Delete "a ". - p11:
you might seeing– s/seeing/see/ - p12:
<imagedata fileref=”images/intro/phoenix-new.png… this fileref seems to be missing a closing double-quote, which breaks the parser and doesn’t insert the image. - p21: The code block in “Handle Events” doesn’t quite match the previous definition, in a trivial way (
{n}vs<%= n %>) - p25:
you should see the actual data that’s sent up to the browser when the user clicks a number– this is worded confusingly. That data is what’s sent //from// the browser to the server when the user clicks a number. - p27:
the time/0 was not re-invoked→the time/0 function - p47:
The :fetch_current_scope_for_user plug runs early in the browser pipeline,– the generator now adds it automatically as the last plug in the browser pipeline. - p48:
Instead of looking up users by tokens in each LiveView, the scope is automatically available:– it’s not though, since we haven’t specified that/wrongrequires an authenticated user in the router yet, so trying to addcurrent_userhere breaks the liveview. Is this just an example rather than a change we should make while following along? - p52:
confirm_user/1– this no longer seems to exist in theAccountsexports, as of Phoenix 1.8.1. - p58:
plug(:put_root_layout,– this appears twice in the snippet, but with Phoenix 1.8.1 it only shows up once, in the browser pipeline. - p70:
we can simplify the WrongLive’s own mount function, so that it looks like this:– this seems to be the exact same definition we had on page 67. - p72:
If a logged in user visits the / route, make them redirect to the /guess route.- It was not obvious how to do this. I searched for a
redirectfunction to use inrouter.ex, but couldn’t find one. The closest wasforwardwhich didn’t seem appropriate. - Instead, I tried adding a second function to
PageController, and referencing that instead of:homein theredirect_if_user_is_authenticatedroute block. It would be good to have some “here’s how you could have done it” sections after the exercises.
- It was not obvious how to do this. I searched for a
- p80:
Notice the significant improvements in Phoenix 1.8’s generator output.– improvements compared to what? In a book written for Phoenix 1.8, it’s likely that almost no readers will remember what the generator output of older versions of Phoenix would look like. - p89:
The Ecto.Changeset.cast/4 function filters the user data we pass into params.–s/params/attrs - p93:
Notice that each of them use the Repo module,=>s/use/uses - p100:
Whenever Catalog.validate_code/1 fails to return the :ok tuple, our code will blow up.– It’sValidator.validate_code/1that can blow our code up this way.Catalog.validate_code/1tries to pattern match on this result, and will throw an error. It never returns an{:ok, ...}tuple toapply_coupon_code/2. - p116:
With just a hand full=>handful - p131:
This tell LiveView–s/tell/tells
Popular Pragmatic Bookshelf topics
Title: Design and Build Great Web APIs - typo “https://company-atk.herokuapp.com/2258ie4t68jv” (page 19, third bullet in URL list)
Typo:...
New
The following is cross-posted from the original Ray Tracer Challenge forum, from a post by garfieldnate. I’m cross-posting it so that the...
New
Hi @Margaret ,
On page VII the book tells us the example and snippets will be all using Elixir version 1.11
But on page 3 almost the en...
New
I am working on the “Your Turn” for chapter one and building out the restart button talked about on page 27. It recommends looking into ...
New
Title: Intuitive Python: docker run… denied error (page 2)
Attempted to run the docker command in both CLI and Powershell
PS C:\Users\r...
New
When installing Cards as an editable package, I get the following error:
ERROR: File “setup.py” not found. Directory cannot be installe...
New
Hi,
I completed chapter 6 but am getting the following error when running:
thread 'main' panicked at 'Failed to load texture: IoError(O...
New
@mfazio23
I’m following the indications of the book and arriver ad chapter 10, but the app cannot be compiled due to an error in the Bas...
New
I just bought this book to learn about Android development, and I’m already running into a major issue in Ch. 1, p. 20: “Update activity...
New
From page 13:
On Python 3.7, you can install the libraries with pip by running these commands inside a Python venv using Visual Studio ...
New
Other popular topics
Bought the Moonlander mechanical keyboard. Cherry Brown MX switches. Arms and wrists have been hurting enough that it’s time I did someth...
New
Continuing the discussion from Thinking about learning Crystal, let’s discuss - I was wondering which languages don’t GC - maybe we can c...
New
Author Spotlight
Mike Riley
@mriley
This month, we turn the spotlight on Mike Riley, author of Portable Python Projects. Mike’s book ...
New
New
Inside our android webview app, we are trying to paste the copied content from another app eg (notes) using navigator.clipboard.readtext ...
New
Programming Ruby is the most complete book on Ruby, covering both the language itself and the standard library as well as commonly used t...
New
I have always used antique keyboards like Cherry MX 1800 or Cherry MX 8100 and almost always have modified the switches in some way, like...
New
Will Swifties’ war on AI fakes spark a deepfake porn reckoning?
New
Build modern server-driven web applications using htmx. Whatever programming language you use, you’ll write less (and cleaner) code.
...
New
Open-source implementation of the classic GTA engine now running directly in your browser. Experience the reVC technology demo on DOS.Zon...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /wasm
- /ruby
- /erlang
- /phoenix
- /keyboards
- /python
- /js
- /rails
- /security
- /go
- /swift
- /vim
- /clojure
- /java
- /emacs
- /haskell
- /svelte
- /typescript
- /onivim
- /kotlin
- /c-plus-plus
- /crystal
- /tailwind
- /react
- /gleam
- /ocaml
- /vscode
- /flutter
- /elm
- /ash
- /html
- /deepseek
- /opensuse
- /zig
- /centos
- /php
- /scala
- /react-native
- /lisp
- /textmate
- /sublime-text
- /nixos
- /debian
- /agda
- /deno
- /django
- /kubuntu
- /arch-linux
- /nodejs
- /ubuntu
- /spring
- /revery
- /manjaro
- /diversity
- /lua
- /julia
- /markdown
- /laravel
Devtalk Sponsors
Practical resources that improve the lives of professional developers.
We build trusted fault-tolerant systems that scale to billions of users.
Real-time error tracking, performance insights, and observability for devs.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Develop your skills with books, videos, and courses.
Catch errors, track performance, monitor hosts and more.
Enabling companies to succeed by building software people love.
Courses that move you from confusion to "Aha, now I get it!"
Publishing Linux Magazine, ADMIN, and MakerSpace for 25+ years.