How many number of GETs, POSTs allowed ?

Can you only have one GET method ? I tried with 2 GET methods:

public Product GetProductById(int id)

public Product GetProductByName(string name)

// And I get: 

http://localhost:4833/api/products/undefined

"The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'HelloWebAPI.Models.Product GetProductById(Int32)'


// I added a new route with the {name} token, but it seems that it doesn't get the route.

Re: How many number of GETs, POSTs allowed ?

zebula8
http://localhost:4833/api/products/undefined

this

undefined

does not correspond wuth

zebula8
GetProductById(int id)

zebula8
GetProductByName(string name)

Please see http://bit.ly/mvc_ajax_jquery

Re: How many number of GETs, POSTs allowed ?

I agree that designing URLs in this fashion isn't good, but doing this is entirely possible with some route magic and constraints.
The first route rule catches URLs with strings that match the regex which looks for numbers. The second rule takes effect if the first one doesn't.

routes.MapHttpRoute(
  name: "ProductsById",
  routeTemplate: "products/{id}",
  defaults: new { controller = "Products", action = "GetProductById" },
  constraints: new { id = @"\d+" }
 );

routes.MapHttpRoute(
  name: "ProductsByName",
  routeTemplate: "products/{name}",
  defaults: new { controller = "Products", action = "GetProductByName" }
);

Re: How many number of GETs, POSTs allowed ?

Here's the routes in my global:

routes.MapHttpRoute(
          name: "ProductByName",
          routeTemplate: "api/products/{name}",
          defaults: new { controller = "products", action = "GetProductByName" }

      );
      routes.MapHttpRoute(
        name: "ProductById",
        routeTemplate: "api/products/{id}",
        defaults: new { controller = "products", action = "GetProductById" },
        constraints: new { id = @"\d+" }
     );

      routes.MapHttpRoute(
          name: "DefaultApi",
          routeTemplate: "api/{controller}/{id}",
          defaults: new { id = RouteParameter.Optional }
      );

All i get now is resouce not found.

Here is the controller code:

  public class ProductsController : ApiController
  {
    public IEnumerable<Product> GetAllProducts()
    {
      return new List<Product>
      {
        new Product()  {Id = 1, Name = "Gizmo 1", Price = 1.99M},
        new Product()  {Id = 2, Name = "Gizmo 2", Price = 2.99M},
        new Product()  {Id = 3, Name = "Gizmo 3", Price = 3.99M}
      };
    }

    public Product GetProductById(int id)
    {
      if (id < 1 || id > 3)
        throw new HttpResponseException(System.Net.HttpStatusCode.NotFound);

      return new Product() { Id = id, Name = "Gizmo" + id, Price = id + 0.99M};
    }

    public Product GetProductByName(string name)
    {
      return new Product() { Id = 1, Name = name + "1", Price = 1.99M };
    }
  }

Re: How many number of GETs, POSTs allowed ?

You need to have the ProductById rule at top, the order does matter. Otherwise the name one will catch it all.

I did try the code before submitting my suggestion, and it worked just fine :) Let me know if you cant get it to work after moving the rules around.

Re: How many number of GETs, POSTs allowed ?

I moved it to the top but still get:

The resource cannot be found.

Re: How many number of GETs, POSTs allowed ?

What URLs are you using when you get the 404?

Re: How many number of GETs, POSTs allowed ?

[http://www.asp.net/web-api/overview/getting-started-with-aspnet-web-api/tutorial-your-first-web-api]

That's the link where I tried this sample and decided if I could use more than one GET.

I'm using the jquery ajax exactly as shown in this sample but with one additional one for the name:

<script type="text/javascript">
  $(document).ready(function () {

    // for GetAllProducts
    $.getJSON("api/products/", function (data) {
      // on success, 'data' contains a list of products
      $.each(data, function (key, val) {
        // format the text to display
        var str = val.Name + ': $ ' + val.Price;

        // add a list item for the product
        $('<li>', { html: str }).appendTo($('#products'));
      });
    });
    // for GetProductById
    $('#find').click(function () {
      var id = $('#prodid').val();
      $.getJSON('api/products/' + id, function (data) {
        var str = data.Name + ': $' + data.Price;
        $('#product').html(str);
      })
      .fail(
        function (jqXHR, textStatus, error) {
          $('#product').html('Error: ' + error);
        });
      });
      // for GetProductByName()
      $('#findname').click(function () {
        var name = $('#nameid').val();
        $.getJSON('api/products/' + name, function (data) {
          var str = data.Name + ': $' + data.Price;
          $('#product').html(str);
        })
      .fail(
        function (jqXHR, textStatus, error) {
          $('#product').html('Error: ' + error);
        });
      });

  });
</script>

Re: How many number of GETs, POSTs allowed ?

Did you try entering the URLs directly into a browser to rule out errors in the Javascript code?

Re: How many number of GETs, POSTs allowed ?

I am able to hit the following urls from the browser by just copy pasting the routes and controller mentioned above.

http://localhost:56554/api/products

http://localhost:56554/api/products/2

http://localhost:56554/api/products/blah

I see that in the GetProductById action, you are explicitly returning a 'NotFound' status code if the id < 1 or id > 3. Are you sure you are not using an id outside this range which could be causing the 'Not Found' ?