<%= form_for @changeset, @action, fn f -> %>
<%= if f.errors != [] do %>
Oops, something went wrong! Please check the errors below:
<%= for {attr, message} <- f.errors do %>
- <%= humanize(attr) %> <%= message %>
<% end %>
<% end %>
<%= text_input f, :username, class: "form-control" %>
<%= password_input f, :password, class: "form-control" %>
<%= submit "Submit", class: "btn btn-primary" %>
<% end %>