public ActionResult Destroy([DataSourceRequest] DataSourceRequest request, TweetGridViewModel model)
{
var tweetToRemove = this.Data.Tweets.GetById(model.Id);
if (tweetToRemove != null)
{
this.Data.Tweets.Delete(tweetToRemove);
this.Data.SaveChanges();
}
return Json(new[] { model }.ToDataSourceResult(request));
}
public ActionResult Update([DataSourceRequest] DataSourceRequest request, TweetGridViewModel model)
{
TweetGridViewModel newModel = model;
if (model != null && ModelState.IsValid)
{
var tweetInDb = this.Data.Tweets.All(new string[] { "Tags" }).SingleOrDefault(t => t.Id == model.Id);
tweetInDb.Text = model.Text;
tweetInDb.DateCreated = model.DateCreated;
foreach (var tag in model.Tags)
{
if (tweetInDb.Tags.SingleOrDefault(t => t.Id == tag.Id) == null)
{
var tagToAdd = this.Data.Tags.GetById(tag.Id);
tweetInDb.Tags.Add(tagToAdd);
}
}
List<int> tagsToRemove = new List<int>();
foreach (var tag in tweetInDb.Tags)
{
if (model.Tags.SingleOrDefault(t => t.Id == tag.Id) == null)
{
tagsToRemove.Add(tag.Id);
}
}
foreach (var id in tagsToRemove)
{
var tagToRemove = tweetInDb.Tags.SingleOrDefault(t => t.Id == id);
tweetInDb.Tags.Remove(tagToRemove);
}
this.Data.SaveChanges();
}
return Json(new[] { newModel }.ToDataSourceResult(request, ModelState), JsonRequestBehavior.AllowGet);
}
