我有这个表格
<div id="login">
<h4>Please log in with your email address</h4>
<%= form_for(@user, id: "login", remote: true) do |f| %>
<% if @user.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@user.errors.count, "error") %> prohibited this user from being saved:</h2>
<ul>
<% @user.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :name %><br />
<%= f.text_field :name %>
</div>
<div class="field">
<%= f.label :email %><br />
<%= f.text_field :email %>
</div>
<div class="field">
<%= f.label :company %><br />
<%= f.text_field :company %>
</div>
<div class="field">
<%= f.label :phone %><br />
<%= f.text_field :phone %>
</div>
<div class="field">
<%= f.label :address %><br />
<%= f.text_field :address %>
</div>
<div class="actions">
<%= f.submit id: "signup_submit" %>
</div>
<% end %>
<script>
$("#signup_submit").bind("ajaxSend", function(){
alert('start');
}).bind("ajaxComplete", function(){
alert('end');
});
</script>
</div>
所以我将数据远程设置为true,并且我很难显示在降级为HTTP请求时可以正常工作的错误。
我确信这很简单,并会感谢任何帮助。
感谢。
答案 0 :(得分:6)
首先重新组织这个,以便页面上存在error_explanation
div(因此您可以使用错误消息填充它...如果需要,用CSS隐藏它)
<div id="error_explanation">
<% if @user.errors.any? %>
<h2><%= pluralize(@user.errors.count, "error") %> prohibited this user from being saved:</h2>
<ul>
<% @user.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
<% end %>
</div>
然后,您可以将这一点jQuery代码添加到现有的<script>
标记区域:
// a method for parsing the JSON response
handle_ajax_error = function(response) {
try { var responseText = jQuery.parseJSON(response.responseText); } catch(e) { var responseText = null; }
if (responseText !== null) {
var responseMsg = responseText.error;
} else {
responseMsg = 'There was an unknown error or the request timed out. Please try again later';
}
return responseMsg;
}
// callback for the ajax error on the #login form
$('#login').live('ajax:error', function(data, xhr, response){
$('#error_explanation').html(handle_ajax_error(response));
});
然后这假设你在控制器响应中有这样的错误:
def create
@user = User.create(params[:user])
if @user.save
redirect_to user_path(@user)
else
render :json => { :error => @user.errors.full_messages.to_sentence },
:status => :unprocessable_entity
end
end
答案 1 :(得分:2)
使用此gem(https://github.com/bcardarella/client_side_validations)可以更简单地解决此问题。这个gem很容易安装在Rails应用程序中,使用这个gem可以很容易地对表单字段进行客户端验证。