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I have a set of requirements to implement the get interface:

 - api/Item - api/Item?name=test - api/Item?updated=2016-10-12 - etc

I've defined the methods as:

 - get() //returns all items - getName([FromUri] string name) - getUpdated([FromUri] string updated)

My issue is - if parameter doesn't exist (let's say the call was api/Item?test=test), the get() method is called as "test" parameter mapping is not found.

I need to return the error response in this case. Is there any other proper way to read the parameters from URL to meet the interface requirement?

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  • Use attribute routing... Commented Oct 12, 2016 at 19:22
  • Or rethink your route design. Why not use api/Item/name/test or api/item/updated/2016-10-12? Then use a default route map followed by an error route map that handles non-matching routes. Commented Oct 12, 2016 at 19:38
  • Thanks guys for pointing into the right direction Commented Oct 12, 2016 at 20:33

1 Answer 1

Reset to default
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You may be looking for something like this

[RoutePrefix("api/items")] public class ItemsController : ApiController { public IHttpActionResult Get() { return Ok(new List<string> { "some results collection" }); } [Route("names")] public IHttpActionResult GetByName([FromUri]string name = null) { if (string.IsNullOrWhiteSpace(name)) { return BadRequest("name is empty"); } return Ok("some result"); } [Route("updates")] public IHttpActionResult GetUpdates([FromUri]string updated = null) { if (string.IsNullOrWhiteSpace(updated)) { return BadRequest("updated is empty"); } return Ok("some result"); } }

When you invoke these REST endpoints, your REST api calls will look something like

GET api/items to retrieve all items

GET api/items/names/john to retrieve by name, if parameter is not supplied, error is returned

GET api/items/updated/test to retrieve updates, if parameter is not supplied, error is returned

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Hi. Thank you for you reply. I've modified the method and routing slightly. The method signature is now GetByName(string name = null) and I've set the [Route("name/{name}")] attribute. It now allows to make a call as api/items/name/john. That has solved my issue. Thank you for your sample.

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