Implement zone dropdowns for block templates

website/MyWebApp/Controllers/AdminBlockTemplateController.cs

@@ -28,6 +28,11 @@ private async Task LoadPagesAsync()
     {
         ViewBag.Pages = await _db.Pages.AsNoTracking().OrderBy(p => p.Slug).ToListAsync();
         ViewBag.Roles = await _db.Roles.AsNoTracking().OrderBy(r => r.Name).ToListAsync();
+        ViewBag.Zones = await _db.PageSections.AsNoTracking()
+            .Select(s => s.Zone)
+            .Distinct()
+            .OrderBy(z => z)
+            .ToListAsync();
     }
 
     public async Task<IActionResult> Index()

website/MyWebApp/Views/AdminBlockTemplate/AddToPage.cshtml

@@ -22,7 +22,12 @@
     </div>
     <div>
         <label>Zone</label>
-        <input type="text" name="zone" />
+        <select id="zone-select" name="zone">
+            @foreach (var z in ViewBag.Zones as List<string>)
+            {
+                <option value="@z">@z</option>
+            }
+        </select>
     </div>
     <div>
         <label>Role</label>

website/MyWebApp/Views/AdminBlockTemplate/_PageAssignment.cshtml

@@ -6,7 +6,7 @@
         <input type="text" id="page-display" readonly />
         <select id="page-select" name="pageIds" multiple size="5">
             <option value="0">All Pages</option>
             @foreach (var p in ViewBag.Pages as List<Page>)
             {
                 <option value="@p.Id">@p.Slug</option>
             }
@@ -14,7 +14,12 @@
     </div>
     <div>
         <label>Zone</label>
-        <input type="text" name="zone" />
+        <select id="zone-select" name="zone">
+            @foreach (var z in ViewBag.Zones as List<string>)
+            {
+                <option value="@z">@z</option>
+            }
+        </select>
     </div>
     <div>
         <label>Role</label>