I've been stuck on this for a couple of days, so now I only do enough to prompt the error:
"Did you add a field for the user's first_name?"
Here's my code:
<%= form_for(@user) do |u| %> <div class="field"> <%= u.label :first_name %><br> <%= u.text_area :first_name %> </div> <% end %>
I'm not sure what the problem is, because in Learn ROR > Associations > Update, the following code worked just fine:
<%= form_for(@destination) do |f| %> <div class="field"> <%= f.label :name %><br> <%= f.text_area :name %> </div> (etc) <% end %>
What am I doing wrong?