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POdealing with success: and error: in an MVC3 client to server validation routine using AJAX
 

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  1. POdealing with success: and error: in an MVC3 client to server validation routine using AJAX
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    <p>I am working on a validation routine that needs to go back to the server, perform a bit of database checking and then return to the client to display messages depending on the outcome.. I am using MVC3, Javascript, Ajax.</p> <p>This is my clientside:</p> <pre><code>&lt;script type="text/javascript"&gt; $('#usrid').change(function (e) { var formData = $("form").serialize(); $.ajax({ url: "ValidateOfficers", type: "POST", data: formData, success: function (data) { alert(data.reponseText); }, error: function (data) { alert(data.reponseText); } }); }); </code></pre> <p></p> <p>This is my controller action:</p> <pre><code> [HttpPost, ActionName("ValidateOfficers")] public ActionResult ValidateOfficers(userRole role) { int holderid = role.holderid; int roleSelected = role.roleid; int chosenUser = role.usrid; int countRoles = db.userRoles.Where(i =&gt; i.roleid == roleSelected &amp;&amp; i.holderid == holderid).Count(); if (countRoles == 0) //success: { Response.StatusCode = 200; Response.Write("ok"); return View("Create", role); } if (countRoles &gt; 0) //error: { Response.StatusCode = 500; Response.Write("error"); return View("Create", role); } return View(); } </code></pre> <p>What I want to do perform the count and then send back a status based on the count result.. So if countRoles = 1 then return text "officer exists" if countRoles > 1 then "duplicate records exist". if countRoles is zero then I can assume success and offer no message. </p> <p>Ok, I am stuck on how to built this custom message on the server side and how to post it back to the client. I was thinking of adding a couple of labels to the razor and show/hiding depending on the count result.. As you can see I have had a very basic go, but to no avail. I get "undefined" in the alert messages currently. </p> <p>If I can get some tips on this I would be most grateful!!</p>
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    1. USbruceiow
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    1. CO"I get "undefined" in the alert messages currently." That's because `data` **is** your response text.
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      1. USAnthony Grist
    2. COah ok - how do I hydrate data with a text from the server in that case?
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      1. POdealing with success: and error: in an MVC3 client to server validation routine using AJAX
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    3. COWhat does `alert(data)` display?
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      1. USAnthony Grist
 

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