Rails 关于 Rails validate 提示的 HTML 代码
rails 中可以用这种方式来捕获验证异常
<% if object.errors.any? %>
<div id="error_explanation">
<div class="alert alert-error">
The form contains <%= pluralize(object.errors.count, "error") %>.
</div>
<ul>
<% object.errors.full_messages.each do |msg| %>
<li>* <%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
需要在对应的页面用 render
Simple Form was designed to be customized as you need to. Basically it's a stack of components that are invoked to create a complete html input for you, which by default contains label, hints, errors and the input itself. It does not aim to create a lot of different logic from the default Rails form helpers, as they do a great job by themselves.
我最后在 config 的 initail 中加入新的文件
ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
%{<span class="field_with_errors">#{html_tag}<label for="#{instance.send(:tag_id)}" class="message">#{instance.error_message.first}</label></span>}.html_safe
end