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PORemote validation with additionalfields >> one more POST?
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copied!<p>I have an ASP.NET MVC3 solution. I use remote validation for checking whether a username already exists.</p> <p>At a first stage, I user the following validation attribute:</p> <pre><code>[Required, Remote("UserNameAlreadyExists", "User", Error="Already exists!"] public string UserName { get; set; } </code></pre> <p>Here is the trace at runtime:</p> <p><img src="https://i.stack.imgur.com/Lgd9g.png" alt="enter image description here"></p> <p>Then I realised I need to pass additional field (userID) to validate thus I do:</p> <pre><code>[Required, Remote("UserNameAlreadyExists", "User", AdditionalFields="UserID", Error="Already exists!"] public string UserName { get; set; } </code></pre> <p>Here is the trace at runtime:</p> <p><img src="https://i.stack.imgur.com/Xmuet.png" alt="enter image description here"></p> <p>You'll see that there is one more POST ?!</p> <p>Why? Tt is a problem in my situation. This drives me crazy.</p> <p>Thanks for your help.</p> <hr> <p>UPDATE </p> <p>Here is the code of my Edit.cshtml</p> <pre><code>@using (Html.BeginForm()) { @Html.HiddenFor(m => m.UserID) @Html.LabelFor(m => m.UserName) @Html.TextBoxFor(m => m.UserName) ... <input type="submit" value="Submit"> } </code></pre> <p>Here is the javascript code</p> <pre><code> $('form', dialog).submit(function () { // Do not submit if the form does // not pass client side validation if (!$(this).valid()) { writeError("Validation failed!"); return false; } // On the line below: I retrieve the POST url + serialize all submitted data from my form $.post($(this).attr('action'), $(this).serialize(), function (data, status) { ... ... }).error(function (error, status, a, b) { alert('Error!'); }); // Unbind form submitting $('form', dialog).unbind(); return false; }); </code></pre> <p>When I debug my code (step by step) I can note some points:</p> <ul> <li>the form is submitted and intercepted by my jquery function</li> <li>the UserAlreadyExists is triggered (why?). In this function (on the second line) I have: var user = _requestServiceClient.GetUserFromUserName(userName); WHEN step on this line, I suddently step into post action of Edit. Strange!? Some step later, it step back in the function UserAlreadyExists. Still strange!?</li> </ul> <p>I don't know if the problem is in my code or if my version of jquery.validate.min.js is outdated and bugged or something else...</p> <p>I noticed that if I don't use any AdditionalFields, I don't have any problems!!</p> <p>I also noticed that if I trigger the UserAlreadyExists volontary (by focus in the field) I don't have any problems when submitting (posting)!! </p> <p><strong>So I have problems when the form Edit is showed and UserName field is not focused! Then I submit and problems arrived</strong></p> <p>Thanks.</p>

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