【问题标题】:Rails: How to print error message with Ajax Jquery?Rails:如何使用 Ajax Jquery 打印错误消息?
【发布时间】:2013-08-04 12:38:49
【问题描述】:
目前,这是我用于创建新消息的代码:
if @message.save
respond_to do |format|
format.html { redirect_to messages_path }
format.js
end
else
flash[:notice] = "Message cannot be blank!"
redirect_to :back
end
如何在 Ajax 中打印相同的消息?还想控制它的格式和位置。
【问题讨论】:
标签:
ruby-on-rails
ruby-on-rails-3
jquery
【解决方案1】:
在应用控制器
after_filter :add_flash_to_header
def add_flash_to_header
# only run this in case it's an Ajax request.
return unless request.xhr?
# add different flashes to header
response.headers['X-Flash-Error'] = flash[:error] unless flash[:error].blank?
response.headers['X-Flash-Warning'] = flash[:warning] unless flash[:warning].blank?
response.headers['X-Flash-Notice'] = flash[:notice] unless flash[:notice].blank?
response.headers['X-Flash-Message'] = flash[:message] unless flash[:message].blank?
# make sure flash does not appear on the next page
flash.discard
end
将通知代码移动到部分:
<div class="noticesWrapper">
<% flash.each do |name, msg| %>
<div class="alert alert-<%= name == :notice ? "success" : "error" %>">
<a class="close" data-dismiss="alert"><i class="icon-remove"></i></a>
<%= msg %>
</div>
<% end %>
</div>
在 js.erb 文件中:
$('.noticesWrapper').html("<%= j(render partial: 'layouts/flash_notices') %>");
在控制器操作中,您需要使用 flash.now 来闪烁消息:
flash.now[:error] = "your message"