private static Topic GenerateLinksForTopic(Topic topic, HttpRequestMessage request)
{
var routeData = request.GetRouteData();
var controller = routeData.Values["controller"];
var urlHelper = request.GetUrlHelper();
topic.SelfLink = new Uri(urlHelper.Route("DefaultApi", new { controller = controller, id = topic.Id }), UriKind.Relative);
if (topic.Comments != null && topic.Comments.Count > 0)
{
topic.Comments = new List<Comment>(topic.Comments.Select((cmt) =>
{
cmt.SelfLink = new Uri(urlHelper.Route("DefaultApi", new { controller = controller, id = cmt.Id }), UriKind.Relative);
cmt.TopicLink = new Uri(urlHelper.Route("DefaultApi", new { controller = "topics", id = cmt.TopicId }), UriKind.Relative);
return cmt;
}));
}
if (topic.Tags != null && topic.Tags.Count > 0)
{
topic.Tags = new List<Tag>(topic.Tags.Select((tag) =>
{
tag.SelfLink = new Uri(urlHelper.Route("DefaultApi", new { controller = controller, tags = tag.Name }), UriKind.Relative);
return tag;
}));
}
return topic;
}
public HttpResponseMessage PostTopic(Topic topic)
{
if (ModelState.IsValid)
{
db.Topics.Add(topic);
db.SaveChanges();
HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, topic);
response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = topic.Id }));
return response;
}
else
{
return Request.CreateResponse(HttpStatusCode.BadRequest);
}
}