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Ruby

alborz
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alborz
Full Stack JavaScript Techdegree Graduate 30,885 Points
Posted by alborz
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alborz
Full Stack JavaScript Techdegree Graduate 30,885 Points

Regarding setup step #3 for Devise gem

Hi - I'm wondering about this step when setting up the Devise gem.

It says to:

Ensure you have flash messages in app/views/layouts/application.html.erb. For example:

   <p class="notice"><%= notice %></p>
   <p class="alert"><%= alert %></p>

So would I just use the above in application.html.erb? I'm asking this because as I'm going through Mackenzie Child's tutorial on how to build a Reddit clone https://mackenziechild.me/12-in-12/1/ he mentions when going through this step to do:

<% flash.each do |name, msg| %>
<%= content_tag(:div, msg, class: "alert alert-#{name}") %>
<% end %>

So I'm not sure.

Could someone please explain this and how I would go about implementing it? Thanks!

1 Answer

Gaylen Miller
Gaylen Miller
19,286 Points

Though it doesn't look like it, they are talking about the same thing.

flash is a hash of 1) type and 2) message

Examples:

flash[:success] = "Well Done"
flash[:error] = "Unable to connect"
flash[:notice] = "Please try again"
  • notice/notice() is a function that is a shortcut to flash[:notice]
  • alert/alert() is a function that is a shortcut to flash[:alert]

The second option that iterates through the flash hash is the more flexible way to display the flash messages.