我在我的遷移中定義了我的表中唯一的一列。如果我嘗試保存違反當然這種唯一性約束的記錄,我收到一個異常:果園1.8 - 用獨特的字段保存記錄
A duplicate value cannot be inserted into a unique index.
保存記錄我使用的IRepository創建和更新方法,因爲它不具備相當的部分。在收到上面的異常後,我會捕獲它,然後啓動AddModelError以停止保存過程。 Neverthless果園給了我另一個異常後:
[AssertionFailure: null id in MyModule.Models.MyRecord entry (don't flush the Session after an exception occurs)]
NHibernate.Event.Default.DefaultFlushEntityEventListener.CheckId(Object obj, IEntityPersister persister, Object id, EntityMode entityMode) +267
NHibernate.Event.Default.DefaultFlushEntityEventListener.GetValues(Object entity, EntityEntry entry, EntityMode entityMode, Boolean mightBeDirty, ISessionImplementor session) +95
NHibernate.Event.Default.DefaultFlushEntityEventListener.OnFlushEntity(FlushEntityEvent event) +139
NHibernate.Event.Default.AbstractFlushingEventListener.FlushEntities(FlushEvent event) +448
NHibernate.Event.Default.AbstractFlushingEventListener.FlushEverythingToExecutions(FlushEvent event) +283
NHibernate.Event.Default.DefaultAutoFlushEventListener.OnAutoFlush(AutoFlushEvent event) +84
NHibernate.Impl.SessionImpl.AutoFlushIfRequired(ISet`1 querySpaces) +471
NHibernate.Impl.SessionImpl.List(IQueryExpression queryExpression, QueryParameters queryParameters, IList results) +477
NHibernate.Impl.AbstractSessionImpl.List(IQueryExpression queryExpression, QueryParameters parameters) +223
NHibernate.Impl.ExpressionQueryImpl.List() +189
NHibernate.Linq.DefaultQueryProvider.ExecuteQuery(NhLinqExpression nhLinqExpression, IQuery query, NhLinqExpression nhQuery) +61
NHibernate.Linq.DefaultQueryProvider.Execute(Expression expression) +262
NHibernate.Linq.DefaultQueryProvider.Execute(Expression expression) +26
Remotion.Linq.QueryableBase`1.GetEnumerator() +83
System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) +173
System.Linq.Enumerable.ToDictionary(IEnumerable`1 source, Func`2 keySelector) +125
Orchard.Data.Migration.DataMigrationManager.GetFeaturesThatNeedUpdate() +311
Orchard.Modules.Data.Migration.<GetNotifications>d__6.MoveNext() +219
System.Linq.<SelectManyIterator>d__14`2.MoveNext() +507
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +536
System.Linq.Enumerable.ToList(IEnumerable`1 source) +80
Orchard.UI.Admin.Notification.NotificationManager.GetNotifications() +151
Orchard.UI.Admin.Notification.AdminNotificationFilter.OnResultExecuting(ResultExecutingContext filterContext) +380
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +245
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +890
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +890
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +890
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +890
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +97
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +241
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +111
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +19
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +51
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +111
Orchard.Mvc.Routes.HttpAsyncHandler.EndProcessRequest(IAsyncResult result) +95
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +606
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +288
如果我理解正確的是什麼原因造成,果園自動嘗試將記錄刷新到數據庫中,即使我添加了一個模型誤差。我試圖改變事務範圍,但它不起作用。有沒有辦法解決這個問題?
不知道你是否可以使用庫來做到這一點,但通常你會做'_transactionManager.Cancel()' – devqon 2015-04-03 13:49:47
不幸的是,它不起作用。我已經嘗試過,並收到相同的錯誤。 – Soel 2015-04-03 14:20:00