保存返回true，对象未保存

Question

保存返回true，对象未保存。我无法解释原因。我怀疑我需要明确告诉rails它是可修改的，但我不知道如何。知道什么可能是错的吗？

视图

<%= form_tag(set_email_settings_path) do %>
  <div class="form-group">
    <% if @logged_in_profile.email_settings != 'off' %>
      <%= submit_tag 'Turn off emails', class: 'btn btn-default btn-about', name: 'email_notification' %>
    <% else %>
      <%= submit_tag 'Turn on emails', class: 'btn btn-default btn-about', name: 'email_notification' %>
    <% end %>
  </div>
<% end %>

控制器

if params[:email_notification] == 'Turn off emails'
  logged_in_profile.email_settings = 'off'
else
  logged_in_profile.email_settings = 'normal'
end
if logged_in_profile.save
  redirect_to email_settings_path
else
  redirect_to settings_path
end

路线

  post "set_email_settings" => "profiles#set_email_settings", :as => 'set_email_settings'

Answer 1

请尝试将其作为表单，因为我认为您不会在表单中提交任何值...

<%= form_tag(set_email_settings_path) do %>
  <div class="form-group">
    <% if @logged_in_profile.email_settings == 'normal' %>
      <%= hidden_field_tag 'email_notification', 'Turn off emails' %>
      <%= submit_tag 'Turn off emails', class: 'btn btn-default btn-about' %>
    <% else %>
      <%= hidden_field_tag 'email_notification', 'Turn on emails' %>
      <%= submit_tag 'Turn on emails', class: 'btn btn-default btn-about' %>
    <% end %>
  </div>
<% end %>

你会在上面看到，我改掉了'！=';只是避免'！='的好习惯。如果没有'else'，'除非'也可以使用<% unless @logged_in_profile.email_settings == 'off' %>。