private HttpResponseMessage SaveProject(CourseProjectData project)
{
if (!ModelState.IsValid)
{
return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
}
project.LecturerId = WebSecurity.CurrentUserId;
CpManagementService.SaveProject(project);
return new HttpResponseMessage(HttpStatusCode.OK);
}
public void SaveProject(CourseProjectData projectData)
{
if (!projectData.LecturerId.HasValue)
{
throw new ApplicationException("LecturerId cant be empty!");
}
if (Context.CourseProjects.Any(x => x.Theme == projectData.Theme && x.SubjectId == projectData.SubjectId))
{
throw new ApplicationException("Тема с таким названием уже есть!");
}
AuthorizationHelper.ValidateLecturerAccess(Context, projectData.LecturerId.Value);
CourseProject project;
if (projectData.Id.HasValue)
{
project = Context.CourseProjects
.Include(x => x.CourseProjectGroups)
.Single(x => x.CourseProjectId == projectData.Id);
}
else
{
project = new CourseProject();
Context.CourseProjects.Add(project);
}
var currentGroups = project.CourseProjectGroups.ToList();
var newGroups = projectData.SelectedGroupsIds.Select(x => new CourseProjectGroup { GroupId = x, CourseProjectId = project.CourseProjectId }).ToList();
var groupsToAdd = newGroups.Except(currentGroups, grp => grp.GroupId);
var groupsToDelete = currentGroups.Except(newGroups, grp => grp.GroupId);
foreach (var projectGroup in groupsToAdd)
{
project.CourseProjectGroups.Add(projectGroup);
}
foreach (var projectGroup in groupsToDelete)
{
Context.CourseProjectGroups.Remove(projectGroup);
}
project.LecturerId = projectData.LecturerId.Value;
project.Theme = projectData.Theme;
project.SubjectId = projectData.SubjectId.Value;
Context.SaveChanges();
}