How to add bootstrap flash messages to entire app via application.html.erb?

Question

I've generated some resources via scaffold, and see <p id="notice"><%= notice %></p> at the top of index and show views.

I have searched for all occurrences of this across the app and deleted them (so there are no flash messages).

Then, I added this to application.html.erb

<% if notice %>
  <p class="alert alert-success"><%= notice %></p>
<% end %>
<% if alert %>
  <p class="alert alert-danger"><%= alert %></p>
<% end %>

Will this effectively generate all possible flash messages?

The reason I ask is because I believe bootstrap has >2 types of messages (e.g. "success", "danger", "info", "primary", "secondary", "warning", "light", "dark"), yet the above code seems to only cater to 2.

For reference, the added code comes from here

Answer 1

Devise just uses notice and alert. If you want more, just add it as described here. If you add warning, like in the docs, you can add:

<% if warning %>
  <p class="alert alert-warning"><%= warning %></p>
<% end %>

and so on.