button select uses name for uniqueness

Management.Web/Shared/Components/AssignmentForm/AssignmentForm.razor

@@ -112,14 +112,14 @@
     }
   }
 
-  private void setAssignmentGroup(LocalAssignmentGroup group)
+  private void setAssignmentGroup(LocalAssignmentGroup? group)
   {
     if(assignmentContext.Assignment == null)
       return;
     
     var newAssignment = assignmentContext.Assignment with 
     {
-      LocalAssignmentGroupId = group.Id
+      LocalAssignmentGroupId = group?.Id
     };
 
     assignmentContext.SaveAssignment(newAssignment);
@@ -150,8 +150,7 @@
   <ButtonSelect
     Label="Assignment Group"
     Options="planner.LocalCourse?.Settings.AssignmentGroups"
-    GetId="(g) => g.Id"
-    GetName="(g) => g.Name"
+    GetName="(g) => g?.Name"
     OnSelect="(g) => setAssignmentGroup(g)"
     SelectedOption="selectedAssignmentGroup"
   />

Management.Web/Shared/Components/Forms/ButtonSelect.razor

@@ -6,12 +6,8 @@
   public string Label { get; set; } = string.Empty;
   [Parameter, EditorRequired]
   public IEnumerable<T> Options { get; set; } = default!;
-    
   [Parameter, EditorRequired]
-  public Func<T, string> GetId { get; set; } = default!;
-  
-  [Parameter, EditorRequired]
-  public Func<T, string> GetName { get; set; } = default!;
+  public Func<T?, string?> GetName { get; set; } = default!;
   
   [Parameter, EditorRequired]
   public Action<T?> OnSelect { get; set; } = default!;
@@ -19,26 +15,17 @@
   [Parameter, EditorRequired]
   public T? SelectedOption { get; set; }
 
-  protected override void OnParametersSet()
-  {
-    selectedItemId = SelectedOption != null ? GetId(SelectedOption) : "";
-    
-  }
-  
   private string htmlLabel => Label.Replace("-", "");
 
-  private string selectedItemId { get; set; }
-
   private void onSelect(T option)
   {
     SelectedOption = option;
-    selectedItemId = GetId(option);
     OnSelect(SelectedOption);
   }
 
-  private string getButtonClasS(T option)
+  private string getButtonClass(T option)
   {
-    var partClass = selectedItemId == GetId(option) ? "primary" : "outline-primary";
+    var partClass = GetName(option) == GetName(SelectedOption) ? "primary" : "outline-primary";
     return $"mx-1 btn btn-{partClass}";
   }
 }
@@ -46,8 +33,8 @@
 <div>
   @foreach(var option in Options)
   {
-    <button
-      class="@getButtonClasS(option)"
+    <button 
+      class="@getButtonClass(option)" 
       @onclick="() => onSelect(option)"
     >
       @GetName(option)

Management.Web/Shared/Components/Quiz/QuizSettings.razor

@@ -58,14 +58,14 @@
     quizContext.SaveQuiz(newQuiz);
   }
 
-  private void setAssignmentGroup(LocalAssignmentGroup group)
+  private void setAssignmentGroup(LocalAssignmentGroup? group)
   {
     if(quizContext.Quiz == null)
       return;
     
     var newQuiz = quizContext.Quiz with 
     {
-      LocalAssignmentGroupId = group.Id
+      LocalAssignmentGroupName = group?.Name
     };
 
     quizContext.SaveQuiz(newQuiz);
@@ -76,7 +76,7 @@
       .LocalCourse?
       .Settings
       .AssignmentGroups
-      .FirstOrDefault(g => g.Id == quizContext.Quiz?.LocalAssignmentGroupId);
+      .FirstOrDefault(g => g.Name == quizContext.Quiz?.LocalAssignmentGroupName);
 }
 @if(planner.LocalCourse != null )
 {
@@ -97,7 +97,6 @@
     <ButtonSelect
       Label="Assignment Group"
       Options="planner.LocalCourse.Settings.AssignmentGroups"
-      GetId="(g) => g?.Id"
       GetName="(g) => g?.Name"
       OnSelect="(g) => setAssignmentGroup(g)"
       SelectedOption="selectedAssignmentGroup"