Using asp webapi to post a nested resource

Question

I am using mvc webapi to create a REST API and struggling to find an example dealing with POSTs to nested resources.

Basically, I want to POST a comment to a blog post using a URL like:

~/posts/2/comments

I would also like to be able to send DELETE and PUTs to the following

~/posts/2/comments/5

What should my route registration look like, and what should my method signature on my PostsController look like?

Thanks!

Glauco Vinicius · Accepted Answer · 2013-02-19 13:27:37Z

9

For nested resources I would suggest that you create very specific routes for the controllers/actions that you want to access.

routes.MapHttpRoute(
    name: "Posts Routes",
    routeTemplate: "api/posts/{postId}/comments/{commentID}",
    defaults: new { controller = "Posts", action="CommentsForPosts" }
);

public HttpResponseMessage CommentsForPosts(int postId, int commentID) {
    //go to work
}

There's no convention in the framework for nested resources but routing gives you the flexibility to map your controllers, methods, and URIs however you see fit

edited Feb 19, 2013 at 13:27

Glauco Vinicius

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answered Jun 22, 2012 at 4:30

cecilphillip

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