Liveview Alert Message Styling with Tailwind CSS

Phoenix Forum Questions / Help
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1

Here’s my situation

I am trying to style Alert messages in my project. For success messages, I would like the background of the message to be green. But what happens is, the background green stays on the page like it s fixed. I want that background only when the alert message is returned.

Here is my code,

live.html.leex

<main role="main">
<div>
<p class="alert-info" role="alert"
    phx-click="lv:clear-flash"
    phx-value-key="info"><%= live_flash(@flash, :info) %>
    
  <span class="absolute inset-y-0 right-0 flex items-center mr-4">
    <svg class="w-4 h-4" role="button" viewBox="0 0 20 20"> <path d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd" fill-rule="evenodd"></path></svg>
  </span>
  </p>
</div>

  <%= @inner_content %>
</main>

app.css

.alert-info{
    @apply relative py-3 pl-4 pr-10 leading-normal text-green-700 bg-green-100 rounded-lg;
  }

form_component.ex

|> put_flash(:info, "User created successfully")

This is what I get when the alert message is returned

Screen Shot 2021-05-27 at 11.36.23 AM
Screen Shot 2021-05-27 at 11.36.23 AM2706×166 4.33 KB

But this background seems fixed

Screen Shot 2021-05-27 at 11.36.35 AM
Screen Shot 2021-05-27 at 11.36.35 AM2708×132 930 Bytes

Any help is appreciated.
Thanks! :smiley:

1 Like
2

your not gating any logic here, example I don’t see anything like <% if live_flash(@flash, :info) do %>

Thus there’s no logic to show or hide said <p class="alert-info" given there are or are not flash messages.

In other words, check for flash messages first before rendering the dom element it will use.

3

Could you try moving the span outside of the p tag? Right now you are also styling that with class="alert-info" as well as the flash message.

4

I know it has been a while and maybe no longer relevant. But maybe someone else will stumble upon this post. I guess the issue here is the default styling which is still applied.

Phoenix LiveView comes with a clever CSS rule

.alert:empty {
  display: none;
}

This works quite well as long as you use their default markup. The moment you add DOM elements to the default <p> tag, it is no longer empty. Therefore, the browser wont hide it and you see an empty green tag.

I am not sure if there is a better way, but @polygonpusher 's solution should work.

1 Like