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POWebAPI Controller is not being reached on DELETE command
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  1. POWebAPI Controller is not being reached on DELETE command
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    copied!<p>I am having difficulty getting the DELETE Method on my Controller to fire when submitting the request over ASP.NET Web API. It returns a 404 but I cannot figure out why. The GET &amp; POST requests work as expected, returning both a list of items as well as a single item when provided an id, but when I call the API using a DELETE request I get a 404 ERROR. </p> <p>Scenario:</p> <h2>1. ASP.NET Web Forms application ...</h2> <p>Not an MVC application although I have installed the MVC4 package in order to leverage the Web API features.</p> <h2>2. Route Table definition in global.asax</h2> <pre><code> RouteTable.Routes.MapHttpRoute( "Default", "api/{controller}/{id}", new { id = RouteParameter.Optional } ); </code></pre> <h2>3. Controller definition</h2> <pre><code> public HttpResponseMessage&lt;Customer&gt; Post(Customer customer) { CustomerDb.Customers.AddObject(customer); CustomerDb.SaveChanges(); var response = new HttpResponseMessage&lt;Customer&gt;(customer, HttpStatusCode.Created); response.Headers.Location = new Uri(Request.RequestUri, "/api/Customer/"+customer.id.ToString()); return response; } public CustomerDTO Get(int id) { CustomerDTO custDTO = null; Customer cust = CustomerDb.Customers.Where(c =&gt; c.id == id).SingleOrDefault(); if (cust == null) throw new HttpResponseException(HttpStatusCode.BadRequest); else custDTO = new CustomerDTO(cust); return custDTO; } public IEnumerable&lt;CustomerDTO&gt; Get() { IQueryable&lt;Customer&gt; custs = CustomerDb.Customers.AsQueryable(); List&lt;CustomerDTO&gt; dto = new List&lt;CustomerDTO&gt;(); foreach (Customer cust in custs) { dto.Add(new CustomerDTO(cust)); } return dto; } public Customer Delete(int id) { Customer cust = CustomerDb.Customers.Where(c =&gt; c.id == id).SingleOrDefault(); if (cust == null) throw new HttpResponseException(HttpStatusCode.BadRequest); CustomerDb.Customers.DeleteObject(cust); CustomerDb.SaveChanges(); return (cust); } </code></pre> <p>I have some of the methods throwing a BadRequest error instead of a 404 when a customer cannot be found so I don't get these responses confused with the REAL problem. Obviously in a real implementation a no customer would return a 404 error. </p> <h2>4. Ajax Call via JQuery to delete item.</h2> <pre><code>function deleteCustomer(id) { var apiUrl = "/api/customer/{0}"; apiUrl = apiUrl.replace("{0}", id); $.ajax({ url: apiUrl, type: 'DELETE', cache: false, statusCode: { 200: function (data) { }, // Successful DELETE 404: function (data) { alert(apiUrl + " ... Not Found"); }, // 404 Not Found 400: function (data) { alert("Bad Request O"); } // 400 Bad Request } // statusCode }); // ajax call }; </code></pre> <p>SO I am expecting that the singel route map should accomodate ALL the scenarios ... </p> <ol> <li>GET api/customer -- Returns ALL customers</li> <li>GET api/customer/5 -- Returns the customer whose ID = 5</li> <li>POST api/customer -- Creates a new customer record</li> <li>DELETE api/customer/5 -- Deletes the customer whose ID = 5</li> </ol> <p>1,2 &amp; 3 work without a problem, just the DELET does not work. I have tried MANY iterations and different tweaks, to no avail. I still feel however that I am overlooking something small. I feel like the problem must be around theRoute mapping but I don't see why this route would not succesfully handle the DELETE request. </p> <p>Any help would be greatly appreciated. </p> <p>Thank You!</p> <p>Gary </p>
 

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