Merge pull request #790 from DFE-Digital/feature/transfer-dates-and-h…

…istory

Fixed bug where it would throw on null date history

Dfe.PrepareTransfers.Data.TRAMS/TramsProjectsRepository.cs

@@ -451,7 +451,10 @@ public async Task<IEnumerable<OpeningDateHistoryDto>> GetOpeningDateHistory(int
                 var apiResponse = await response.Content.ReadAsStringAsync();
                 return JsonConvert.DeserializeObject<IEnumerable<OpeningDateHistoryDto>>(apiResponse);
             }
-
+            if (response.StatusCode is System.Net.HttpStatusCode.NotFound)
+            {
+                return null;
+            }
             throw new TramsApiException(response);
         }
     }

Dfe.PrepareTransfers.Web/Pages/TaskList/DateHistory/DateHistory.cshtml.cs

@@ -17,7 +17,7 @@ public class DateHistory : CommonPageModel
 
         public Project Project { get; set; }
         public AdvisoryBoardDecision Decision { get; set; }
-        public IEnumerable<OpeningDateHistoryDto> OpeningDateHistory { get; set; }
+        public IEnumerable<OpeningDateHistoryDto>? OpeningDateHistory { get; set; }
 
         public DateHistory(IProjects projectsRepository, ILogger<DateHistory> logger)
         {
@@ -28,7 +28,7 @@ public DateHistory(IProjects projectsRepository, ILogger<DateHistory> logger)
         public async Task<IActionResult> OnGetAsync()
         {
             Project = (await _projectsRepository.GetByUrn(Urn)).Result;
-            OpeningDateHistory = await _projectsRepository.GetOpeningDateHistory(Convert.ToInt32(Urn));
+            OpeningDateHistory = await _projectsRepository.GetOpeningDateHistory(Convert.ToInt32(Urn)) ?? null;
 
             return Page();
         }