public bool LeaveGroup(GroupLeaveRAO rao)
{
using (var ctx = new ApplicationDbContext())
{
var group = ctx.Groups.FirstOrDefault(g => g.GroupInviteKey == rao.GroupInviteKey);
var groupMemberCount = ctx.GroupMembers.Where(gm => gm.GroupId == rao.GroupId).Count();
if (group == null)
{
return(false);
}
else if (group.OwnerId == _userId && groupMemberCount > 1)
{
return(false);
}
int changes = 0;
var groupMember = ctx.GroupMembers.FirstOrDefault(gm => gm.MemberId == _userId && gm.GroupId == rao.GroupId);
ctx.GroupMembers.Remove(groupMember);
changes++;
if (groupMemberCount == 1)
{
ctx.Groups.Remove(group);
changes++;
}
return(ctx.SaveChanges() == changes);
}
}
public ActionResult Leave(int id)
{
var svc = GetGroupService();
var group = svc.GetGroupInfo(id);
var rao = new GroupLeaveRAO {
GroupId = group.GroupId, GroupInviteKey = group.GroupInviteKey
};
if (svc.LeaveGroup(rao))
{
return(RedirectToAction("MyGroups"));
}
TempData["FailResult"] = "Cannot leave group.";
return(RedirectToAction("Index", new { id }));
}
public IHttpActionResult LeaveGroup(GroupLeaveDTO dto)
{
var service = GetGroupService();
var rao = new GroupLeaveRAO
{
GroupId = dto.GroupId,
GroupInviteKey = dto.GroupInviteKey
};
if (service.LeaveGroup(rao))
{
return(Ok());
}
else
{
return(BadRequest());
}
}