Web API: Need to understand a web api attribute routing

Question

got the code from this url http://stackoverflow.com/questions/21704505/how-do-i-use-webapi-rest-correctly-when-other-params-are-needed?rq=1

i am new in web api attribute routing

[Route("customers/{customerId}/orders")]
public IEnumerable<Order> GetOrdersByCustomer(int customerId) { ... }
or
[Route("customers/{customerId}/orders/{orderId}")]
public Order GetOrderByCustomer(int customerId, int orderId) { ... }

what is the meaning of 1st and 2nd route ?

how the first and second url will look like please add the same url for both above action ?

thanks

Bhuvanesh Mohankumar · Answer

They both are different customers/{customerId}/orders customers/{customerId}/orders/{orderId} Sample Scenario: You need to check all teh items that you have ordered in Amazon or Flipkart site To view all the orders placed by user then use customers/{customerId}/orders Which will return the collection of orders so resposne is - IEnumerable When you have to check detail about single Item you ordered last say a mobile phone which has oredr Id 24 Then use the other URL customers/{customerId}/orders/{orderId} customers/{customerId}/orders/24 Which will return detail of that particular order with full infomation so response will be Order That is why both have different return type [Response] and URL is different. Mark as answer if helpful.