Buddy ViewModel with LINQ Join - linq

Question

SOS! What I am trying to achieve is for the logged in person, to see the users he or she is supporting (buddying). I am now trying to fully embrace ViewModels to coagulate views. I am using simplemembership MVC4 with Mysql. I have a UserProperties(all details of my users)linked to Userprofile and Everything else works. I usually use two databases one for membership and another for all other stuff.
models
UserProfile/UserProPerties - extended for all other properties
UserId
List item
UserName
UserProperty
FirstName
LastName
SchoolName
UserId
Buddyship
buddyId
buddiedByUserId
buddiedUserId
Viewmodel model
public class BuddyViewModel
{
public BuddyShip BuddyShip {get; set;}
public List<Buddyship> AllBudees {get; set;}
public UserProperty UserProperty { get; set; }
public PanelViewModel(Buddyship buddyship, List<Buddyship> allBudees)
{
Buddyship = buddyship;
AllBudees = allBudees;
}
}
BuddyViewModel Controller
// I believe this is where the magic should come from
public ActionResult Index(int? id)
{
//I get logged in user properties
var user = db.UserProperties.SingleOrDefault(x => x.UserName == User.Identity.Name);
Buddyship allBudees = db1.Buddyships.SingleOrDefault(u =>u.BuddiedByUserId == user.UserId);
var buds = from u in db.UserProperties
join m in db1.Buddyships on u.UserId equals m.BuddiedByUserId
where m.BuddiedByUserId == user.UserId
select new { u.FirstName, u.LastName, u.SchoolName, u.UserId };
var buddyviewmodel = new BuddyViewModel(buds //don't know what to put here);
return View(buddyviewmodel);
}
View
#model IEnumerable<BudTT.Models.BuddyViewModel>
#foreach (var item in Model.Buddyships)
{
<p>#Html.DisplayFor(model =>model.UserProperty.FirstName)</p>
<p>#Html.DisplayFor(model =>model.UserProperty.LastName)</p>
}
Thanks if you are able to help

Answer 1

Try to change your code as follows.
ViewModel:
public class BuddyViewModel
{
public BuddyShip BuddyShip {get; set;}
public List<Buddyship> AllBudees {get; set;}
public List<UserProperty> Users { get; set; } //** Add this property
}
Your action:
public ActionResult Index(int? id)
{
//I get logged in user properties
var user = db.UserProperties.SingleOrDefault(x => x.UserName == User.Identity.Name);
///**************Get Buddyships of current user*************************
List<Buddyship> allBudees = db1.Buddyships.Where(u =>u.BuddiedByUserId == user.UserId).ToList();
///**************Get Users supporting by user*************************
var buds =
(from u in db.UserProperties
join m in allBudees on u.UserId equals m.buddiedUserId
where m.BuddiedByUserId == user.UserId
select new UserProperty
{
FirstName = u.FirstName,
LastName = u.LastName,
SchoolName = u.SchoolName,
UserId = u.UserId
}).ToList();
var buddyviewmodel = new BuddyViewModel
{
Users = buds,
AllBudees = allBudees, //** if you really need this property in your View,
...
}
return View(buddyviewmodel);
}
Change View. In your action you are sending only one BuddyViewModel, which contains a list of UserProperties, but not a list of BuddyViewModels
#model BudTT.Models.BuddyViewModel
#foreach (var item in Model.Users)
{
<p>#item.FirstName</p>
<p>#item.LastName</p>
}