eex | Lots of Canvas stuff | Canvas library
kandi X-RAY | eex Summary
kandi X-RAY | eex Summary
Collection of tiny eexperiments built with web technologies.
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Top functions reviewed by kandi - BETA
- Updates the state of the Universe with the current state .
- interpolate two RGB values
- Initialize a new space .
- A space .
- Returns the number of neighbor neighbors of a cell .
- SVG form .
- Construct a new space .
- Creates a SVG space .
- Contains information about a particle .
- Creates a new Color .
eex Key Features
eex Examples and Code Snippets
Community Discussions
Trending Discussions on eex
QUESTION
In my quest to learn Phoenix LiveView I found myself using a render function that uses a deprecated sigil:
...ANSWER
Answered 2021-Dec-23 at 19:45The problem in my attempt was the @ character. I likely miss understood the error message and concluded the @ had to be part of the variable.
The correct version looks like this:
QUESTION
I'd like to run the following code:
...ANSWER
Answered 2021-Oct-07 at 10:49Kernel.SpecialForms.with/1 returns the RHO immediately if there is no match.
That said, either you need to handle both possible cases with else or ensure that what’s returned is renderable (as in your case of :foo <- :bar.)
What happens, is <%= attempts to render not matched day_data and fails.
To introduce else one should use the following syntax
QUESTION
the content of the floating window is not included in the web code. it only appears when the mouse is over it. So how can I obtain the value in this situation? I find it tricky cuz there's no anchor point for me to control the movement of the mouse.
The code is like below,
...ANSWER
Answered 2021-Sep-09 at 11:06I hope this is answer you are looking for.
QUESTION
In a Phoenix .eex/.leex form created with <%= f = form_for @changeset…, is there a way to reference one of the field values in a CSS class definition?
For example, I’d like to hide a div element if field1's value is “”. This is the code that I drafted that doesn't seem to work.
...ANSWER
Answered 2021-Jul-07 at 20:13You can use Ecto.Changeset.get_field/3, Ecto.Changeset.get_change/3 or just go for @changeset.data.field1.
Check the docs for the differences between those three and put a temporary <%= inspect @changeset %> inside your form to see what data and changes are all about.
So one way of doing what you want is:
QUESTION
When using I18n.t to embed a link in Rails, one could do something like this in an ERB:
ANSWER
Answered 2021-Jun-18 at 14:11The error indicates that we need to convert the output of the Phoenix.HTML.link/2 function to a string. To do this, we can add an intermediary call to Phoenix.HTML.safe_to_string/1 to convert the output to a string that will be embedded.
So the previous example ends up looking something like this:
QUESTION
I am a newbie to elixir and what I'm trying to do is calculate the total price of items in the user's cart and display it in the cart page. I wrote a function which is a mix of functions I found on the internet. I would appreciate any help!
Here is my index.html.eex for shopping cart
...ANSWER
Answered 2021-Jun-04 at 15:00- If you can see “Total amount: ” part in the view, the view is fine.
<%= total_price(@books) %>should be insideifclause.- You want to calculate a total, which is a number, not a map. So reduce the number.
That said, the below should work.
QUESTION
I'm using EEx template engine to render HTML pages (no Phoenix here). I'm passing the connection (Plug.Conn) conn to the template along with extracted parameter list (params) and the session map (session) with : body = EEx.eval_file(path, conn: conn, params: conn.params, session: session). params and session are provided just for convenience as they also are in the connection.
If the page modifies the session (configured with cookies), say with something like <% Plug.Conn.put_session(conn, "reply", 42) %>), this modifies the connection but this also remains local to the page and is not propagated.
Is there a way to retrieve this modified version of the connection from the EEx engine ?
NB: I'm talking about the connection (Plug.Conn), but it could be any variable that is modified or created by the template engine, just a similar way Code.eval_string("a=1\n b=2\n c=a+b") does : {3, [a: 1, b: 2, c: 3]}.
ANSWER
Answered 2021-May-25 at 15:13EEx.eval_file and EEx.eval_string both return a String type, they do not return the updated bindings (as, like you say, Code.eval_string does).
I think the reasoning behind this is that you want a render function to have no side-effects (like database calls or session modification).
You don't want business-logic in your templates, you want to put that in your controller or data layer (with the advantage that you can test it in isolation).
Maybe offtopic, but if you're coming from a PHP background (where you can put all your code in one file that looks like an HTML template) this might be the source of the confusion.
UpdateThis could work though:
QUESTION
It seems that hot reloading of React components is not working in Phoenix 1.5 with Webpack. I created this sample app to illustrate the problem I'm experiencing: https://github.com/johnnyicon/phx15-react-babel-tailwindcss-postcss
Changes to ./assets/js/react/App.js are not being automatically reloaded. Refreshing the page does not reflect the change either. I have to restart the Phoenix server in order for the changes to show.
I can edit other files, like template files (*.html.eex) and they reload fine. The interesting thing, however, is even when the other files reload, the React component still doesn't update.
Any ideas how to get hot reloading working with React components?
PS. loosely followed this tutorial to set up React in a Phoenix 1.5 project: https://betterprogramming.pub/using-react-17-with-phoenix-1-5-1b445526c739
...ANSWER
Answered 2021-May-17 at 21:13Simple solution. This break in the expected behavior of the development framework is due to the upgrade to Webpack 1.5. In order to get hot reloading again, you need to add the --watch flag to the watchers entry in dev.exs. The flags changed from v1.4 to 1.5.
Here's an example (lines 11 and 12):
QUESTION
I created an alternative phx.gen.html which creates templates with TailwindCSS. It works fine. I'd like to share it by creating a Hex package phx_tailwind_generators. Here is what I have so fare:
ANSWER
Answered 2021-Jan-06 at 07:25You are after eex templating the sources. See how phoenix does it for e. g. context template.
Then you need to process it as shown here. In a nutshell, it’ll be all about calling EEx.eval_file/3.
QUESTION
I customize the phx.gen.html template to use TailwindCSS. In the :show template I use this code:
ANSWER
Answered 2020-Dec-31 at 11:47<% require Integer %>
<%= for {{k, _}, counter} <- Enum.with_index(schema.attrs) do %>
<% bg_color = if Integer.is_even(counter), do: "bg-gray-50", else: "bg-white" %>
[...]
<% end %>
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