Asp.net web api routing issue?

Question

I am using web api in my mvc application. I have a problem while calling web api using jquey.get function. Consider the following scenario:

I have 2 controller name:

1. HomeMVCController
2. TestAPIController (using mvc style routing i.e. api/{controller}/{action}/{id})

HomeMVC controller contains 2 actions

1. Index
2. About

TestAPI controller contains 1 action

1. Get

When i was on Index view of HomeMVC controller i.e.

http://localhost:1025/Home

and when i call $.get("api/TestAPI/Get") from the browser it returns the expected json response.

But when i was on About view of HomeMVC controller i.e.

http://localhost:1025/Home/About

and when i call $.get("api/TestAPI/Get") from the browser it returns error, resource not found, and the resource it is trying to locate is:

http://localhost:1025/Home/About/api/TestAPI/Get  

instead of

http://localhost:1025/api/TestAPI/Get  

Why browser added Home/About in the url to api and why it is not added Home/Index when i was on Index view. On Index view why api call is working as expected and why not working on About view ??

Answer 1

You used a relative url when you should be using an absolute url.

You should instead use an absolute url by doing:

$.get("@Url.RouteUrl("@Url.RouteUrl("DefaultApi", new {httproute="", controller="TestAPI", action="Get"}))

If you want to keep your javascript in separate js files (and not in the razor files) what you can do is have an initialize method that is called from a razor view.

The .js file:

var myPageJsUrls = {};

var MyPageInitialize = function(getItemsUrl, saveItemUrl, editItemUrl){
    myPageJsUrls.getItemsUrl = getItemsUrl;
    myPageJsUrls.saveItemUrl = saveItemUrl;
    myPageJsUrls.editItemUrl = editItemUrl;
}


var getItems = function(){
    return $.get(myPageUrls.getItemsUrl);
}

...

In the razor file:

<script>
    myPageInitialize('@Url.Action("AllItems", "Items")', '@Url.RouteUrl("DefaultApi", new {httproute="", controller="TestAPI"}, ...)
</script>