alsaraha
Hide flash element if there is none?
The default template in the app.html.heex file is
<main class="container">
<p class="alert alert-info" role="alert"><%= get_flash(@conn, :info) %></p>
<p class="alert alert-danger" role="alert"><%= get_flash(@conn, :error) %></p>
<%= @inner_content %>
</main>
but what if I want to put something else other than the p element like a group of elements and icons, how do I hide the element in case there is no flash alert?
Marked As Solved
chrismccord
# <.flash kind={:info} flash={@flash} />
# <.flash kind={:error} flash={@flash} />
def flash(%{kind: :info} = assigns) do
~H"""
<%= if live_flash(@flash, @kind) do %>
<div>...
<% end %>
"""
end
Also Liked
LostKobrakai
I’d just not render anything if there’s no flash message to show. Imo the p:empty css phoenix uses is a clever way to handle no alerts, but also a bit to clever one.
I usually change this to something like this:
<%= for type <- [:info, :error], flash = get_flash(@conn, type) do %>
…
<% end %>
kif
It is clever but it brakes if you use mix format because it transform it into
<p class="alert alert-info" role="alert"><%= get_flash(@conn, :info) %></p>
</p>
instead of one line. Making p:empty selector to fail.
LostKobrakai
That’s what I mean by “to clever”. It’s just to fragile, now even more with the formatter breaking it even automatically.
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