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POAsp.net web api post action parameters
 

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  1. POAsp.net web api post action parameters
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    <p>I'm currently writing a little application consisting of a mvc web api server and mvc 4 client, I've faced a problem, that is eating my mind for several days already.</p> <p>I have a ContactsController, that contains:</p> <pre><code>[HttpPost] public ActionResult AddContact(ContactModel model, HttpPostedFileBase image) { return ActionWrapper(() =&gt; { if (model.InitializeFromCookie()) { if (image != null) { model.ImageMimeType = image.ContentType; model.Picture = new byte[image.ContentLength]; image.InputStream.Read(model.Picture, 0, image.ContentLength); } PostObject("api/contacts/postcontact", model); RefreshCookie(); return RedirectToAction("Contacts", "Contacts"); } else { return JsonRedirectResult(Url.Action("Login", "Users")); } }); } </code></pre> <p>Model is derived from AuthorizationContent. The post object method:</p> <pre><code>[NonAction] protected object PostObject(string apiUrl, object obj, object additionalData = null) { var query = additionalData != null ? additionalData.GetQueryString() : string.Empty; apiUrl += query; var action = _client.PostAsJsonAsync(apiUrl, obj); action.Wait(); if (!action.Result.IsSuccessStatusCode) { var code = action.Result.StatusCode; var error = action.Result.ReasonPhrase; throw new ServerSideException(code, error); } else { return action.Result.Content.ReadAsAsync&lt;object&gt;().Result; } } </code></pre> <p>The method is about to call webapi controllers' method:</p> <pre><code>[AuthorizedOnly, HttpPost] public void PostContact([FromBody]AuthorizationContent item, User authorizedUser) { var realItem = Mapper.Map&lt;ContactModel, Contact&gt;((ContactModel) item); _contactService.AddContact(authorizedUser, realItem); } </code></pre> <p>The filter:</p> <pre><code>[AttributeUsage(AttributeTargets.Method | AttributeTargets.Class)] class AuthorizedOnly : ActionFilterAttribute { private ISessionService _sessionService; private Session _userSession; public ISessionService SessionService { get { return _sessionService ?? (_sessionService = NinjectWebCommon.Kernel.Get&lt;ISessionService&gt;()); } } public override void OnActionExecuting(HttpActionContext actionContext) { var auth = actionContext.ActionArguments.Values.FirstOrDefault() as AuthorizationContent; if (auth == null) { throw new UnauthorizedException(); } else { var user = SessionService.GetMemberBySessionCredentials(auth.Token, auth.UserName); _userSession = user.Session; if (SessionService.IsSessionValid(_userSession)) { actionContext.ActionArguments["authorizedUser"] = user; base.OnActionExecuting(actionContext); } else { throw new UnauthorizedException(); } } } </code></pre> <p>The code works just fine for get actions, but when i am trying to do the post as shown above i'm always getting a server side exception stating </p> <blockquote> <p>{StatusCode: 400, ReasonPhrase: </p> <p>'Can't bind multiple parameters ('item' and 'authorizedUser') to the request's content.', Version: 1.1, Content: System.Net.Http.StringContent, Headers: { Content-Type: text/plain; charset=utf-8 } }</p> </blockquote> <p>The question - how can i state that authorizedUser will come from filter and model binder should NOT look for it in requests content? Sorry for my bad english and thank you beforehand!</p>
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    1. USHardLuck
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    1. COSince parameter binding happens before ActionFilters are run, not sure how this can be done
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      1. USKiran Challa
 

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