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POSpring MVC jQuery remote validation
 

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    <p>I am using Spring MVC on the server side, but in one of the pages I decided to create an AJAX validation with jQuery rather than the default Spring validation. Everything works great, except when I have to do a remote validation to check if a "title" already exists in the database. For the javascript I have the following:</p> <pre><code>var validator = $("form").validate({ rules: { title: { minlength: 6, required: true, remote: { url: location.href.substring(0,location.href.lastIndexOf('/'))+"/checkLocalArticleTitle.do", type: "GET" } }, html: { minlength: 50, required: true } }, messages: { title: { required: "A title is required.", remote: "This title already exists." } } }); </code></pre> <p>Then, I use Spring-Json to make this validation and give a response:</p> <pre><code>@RequestMapping("/checkLocalArticleTitle.do") public ModelAndView checkLocalArticleTitle(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Map model = new HashMap(); String result = "FALSE"; try{ String title = request.getParameter("title"); if(!EJBRequester.articleExists(title)){ result = "TRUE"; } }catch(Exception e){ System.err.println("Exception: " + e.getMessage()); } model.put("result",result); return new ModelAndView("jsonView", model); } </code></pre> <p>However, this does not work and the field "title" is never validated. I think the reason for this is that I am returning an answer in the manner:</p> <pre><code>{result:"TRUE"} </code></pre> <p>when in fact, the answer should be:</p> <pre><code>{"TRUE"} </code></pre> <p>I don't know how to return a single response like this one using a ModelAndView answer.</p> <p>Another thing that is not working is the customized message for the "remote" validation:</p> <pre><code> messages: { title: { required: "A title is required.", remote: "This title already exists." } }, </code></pre> <p>The required message works, but not the remote message. I looked around, but I didn't see many people using Spring and jQuery at the same time. At least, not mixing with jQuery remote valdations and Spring-Json. I would appreciate some help here.</p>
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