CODEWITHSUNDEEP
entity-frameworkasp.net-mvc-4knockout.jsasp.net-web-apininject
Maks Martynov
Maks Martynov

Reputation: 458

Entries delete from knockout ui, but not from db

I use WebApi in MVC 4 with EF, Ninject. In client i use knockout.js end it's delete my entries from UI, but it's still in DB. Add, update action works fine.

Client code:

 self.removeUser = function (user) {
              var conj = ko.toJS(user);
              var json = JSON.stringify(conj);
              var Id = user.Id();
              $.ajax({
                  url: API_URL + Id,
                  cache: false,
                  type: 'DELETE',
                  contentType: 'application/json; charset=utf-8',
                  data: '',
                  success: function () {
                      self.Users.remove(user);
                  }
              });
          }

WebAPI

 // DELETE api/user/5
public HttpResponseMessage Delete(int id)
{
    _userRepository.Delete(id);
    return Request.CreateResponse(HttpStatusCode.NoContent);
}

Repository

  public void Delete(int userId)
    {
        var user = Get(userId);
        _db.Users.Remove(user);
    }

Where to start? Which way to go?

Upvotes: 0

Views: 110

Answers (1)

nemesv
nemesv

Reputation: 139758

If you want to delete an entity is is not enough to remove it form its collection. You need to call DbContext.SaveChanges() in order to commit the transaction and persist your changes into the DB:

public void Delete(int userId)
{
    var user = Get(userId);
    _db.Users.Remove(user);
    _db.SaveChanges();
}

Upvotes: 2

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