Programming Phoenix LiveView (Pragmatic Bookshelf)
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Title: Programming Phoenix LiveView
I am not sure if this an appropriate way to send feedback for this book. It seems like the defacto i...
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At start of the page log_out_user/1on_mount/4 should be on separate lines
iex> exports PentoWeb.UserAuth
__phoenix_verify_routes__/1
...
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Title: Programming Phoenix LiveView: Mount and Render the Product Index • 115
… let’s examine the socket assigns now. Add the following...
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The latest book version, B 13.0 supposes to use the latest Phoenix 1.8.0 heex template variable interpolation syntax, what is not the ca...
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There’s no simple_form/1 in phoenix 1.8
So this code
<div>
<.simple_form
for={@form}
id="promo-form"
phx-change=...
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On page 139 in the iex session in the Test Drive the Schema section, the instruction is to execute Product.changeset/2. However, the prev...
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In Install Elixir, Postgres, Phoenix, and LiveView it says:
Make sure you get at least the minimal version of Elixir (>= 1.14 as of ...
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The line on page 65 (using the PDF) is
on_mount: [{PentoWeb.UserAuth, :ensure_authenticated}] do
This is incorrect and will throw an e...
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Sorry, I couldn’t figure out how to add a tag to a previous post (so that it shows up in the right section here), hence I just made a new...
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The inline HTML in the book references the functions upload_image_error, upload_error_message, and upload_error_to_string. They are not d...
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There looks to be a misprint on page 217 of Book version: P1.0—March, 2026. A code block is displayed of a <.form> component with a...
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p81: live "/products/new", ProductLive.Index, :new – as you noted just above, the generator in Phoenix 1.8 puts this in ProductLive.Form,...
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p2: we update a yet another element. Delete "a ".
p11: you might seeing – s/seeing/see/
p12: <imagedata fileref=”images/intro/phoenix-...
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Title: Programming Phoenix LiveView (page 139)
Example: “Redipient” should be “Recipient”
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happy to get the email this morning about the 1.1 version of the book! Just last night I spent an unnecessary amount of time figuring out...
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In the brief description of ~/pento/lib/pento/promo/recipient.ex it says ‘… Then we disable our primary key since our live view won’t mak...
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root_layout: {PentoWeb.LayoutView, :root},
This results in the following following error:
no “root” html template defined for PentoWeb...
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Disclaimer: I hope all of this is accurate, and not the result of some stupid typo I failed to notice. Anyways…
This post comprises 2 is...
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The schemaless form defined in file “lib/pento_web/live/promo_live.html.heex” on page 133 of the book requires some transformation. The :...
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Hi, I just finished reading Programming Phoenix LiveView B10 PDF edition.
I found some typos and errata, and I will report them all in t...
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The code example explicitly adds a layout to the live session used for WrongLive:
root_layout: {PentoWeb.LayoutView, :root},
This m...
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The code example at the top of page 140 includes the phx-debounce=blur binding:
<.input field={@form[:email]} type="email"
label="E...
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The changelog for LiveView 0.20.x stated the deprecation. It seems like it’s largely only a name change, i.e., there’s no functional diff...
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The 3rd paragraph on the page states:
Our <.header> function invocation in the index template doesn’t make use of the <:subtit...
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In PentoWeb.RatingLive.Index.product_rating/1 function, there is a call to <RatingLive.Show.stars rating={rating} product={@product} /...
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Hi! To get to see the shapes on the board, I think that where it says:
# lib/pento_web/live/game_live/board.ex
def assign_shapes(%{assig...
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if active Pentominos do not showup on the screen it is due to this line on p369
defp assign_shapes(%{assigns: %{board: board}} = socket)...
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Something wrong is with using the .simple_form component in the promo_live.html.heex template. Instead of seeing the content described on...
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The last line in the first paragraph on page 99 reads:
…put certain instructions in socket.products.inserts or socket.products.deletes....
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When describing the render/1 function, there is a wrong reference to the :let directive used in the simple_form/1 function component:
T...
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At the top of page 12, after “Now, start the web server,” the book shows sample output, but does not show the command to start the web se...
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In general, the book isn’t yet updated for Phoenix version 1.6. On page 18 of the book, the authors indicate that an auto generated of ro...
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The markup used to display the uploaded image results in a Phoenix.LiveView.HTMLTokenizer.ParseError error.
lib/pento_web/live/product_l...
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It seems the second code snippet is missing the code to set the current_user:
current_user: Accounts.get_user_by_session_token(session["...
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The generated iex result below should list products instead of product for the metadata. (page 67)
iex> product = %Product{}
%Pento....
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Hi! I know not the intentions behind this narrative when called, on page XI:
mount() |> handle_event() |> render()
but the correc...
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Book: Programming Phoenix LiveView, page 142 (157/378), file lib/pento_web/live/product_live/form_component.ex, in the function below:
d...
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“The ProductLive.Index template calls a helper function, live_component/3, that in turn calls on the modal component. ”
Excerpt From: Br...
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A further clarification: When I move to the “Stateful components” section and run a compile with “iex -S mix”, the compile works. When I ...
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The right lifecycle should be
mount/3
handle_prams/3
render/3
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Title: Programming Phoenix LiveView B8 - entire Ch4 modal component section needs correcting (Page 101-114)
Example: Programming Flutter...
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On Chapter 3 - Page 78, the beginning of the page has this code here:
@doc """
Maybe it is missing to put the Pento context before Cata...
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(Phoenix 1.6.6, Ecto 3.7.2, Elixir 1.13)
When building the custom Survey context, we are told to then update the rating.ex file with the...
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The introduction instructions under section “Build a Simple LiveView” are incomplete. If followed from book one gets the following error:...
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In the code sample for auth /pento/lib/pento_web/live/user_auth_live.ex the on_mount function is defined as:
on_mount(_, params, %{"user...
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socket is being accessed in the function body, hence the need to include it in the function head.
Current:
def maybe_track_user(
...
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