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В настоящее время я работаю над своей собственной простой CMS с помощью MVC, чтобы ознакомиться с MVC и EF.EF code first Неверное имя столбца
В это время у меня есть только страницы, которые могут содержать несколько абзацев. В базе данных у меня есть 1 страница (Главная) и 1 параграф.
На домашнем индексе дома я вызываю действие GetParagraph моего контроллера, чтобы получить абзац на основе значения-заполнителя. Значение заполнитель правильно отправляется контроллеру и запросу. Но я получаю исключение, когда запрос пытается получить доступ к базе данных для извлечения записи.
Исключение
{"Invalid column name 'ParagraphId'.\r\nInvalid column name 'PageId'.\r\nInvalid column name 'LinkUrl'.\r\nInvalid column name 'LinkText'.\r\nInvalid column name 'LinkTarget'.\r\nInvalid column name 'ImageUrl'.\r\nInvalid column name 'ImageLink'.\r\nInvalid column name 'ImageLinkTarget'.\r\nInvalid column name 'ImageAlt'."}
Модели
public class Page
{
[Key]
public int PageId { get; set; }
[DisplayName("Parent")]
public int? ParentId { get; set; }
[Required]
public string Title { get; set; }
[Required]
[DisplayName("View name")]
public string ViewName { get; set; }
[DataType(DataType.Date)]
public DateTime Created = DateTime.Now;
[Required]
public bool Published { get; set; }
public virtual ICollection<Paragraph> Paragraphs { get; set; }
}
public class Paragraph
{
[Key]
public int ParagraphId { get; set; }
public int PageId { get; set; }
public virtual Page Page { get; set; }
public string Placeholder { get; set; }
public string Title { get; set; }
[AllowHtml]
[DataType(DataType.MultilineText)]
public string Text { get; set; }
public string LinkUrl { get; set; }
public string LinkText { get; set; }
public string LinkTarget { get; set; }
public string ImageUrl { get; set; }
public string ImageLink { get; set; }
public string ImageLinkTarget { get; set; }
public string ImageAlt { get; set; }
[DataType(DataType.Date)]
public DateTime Created = DateTime.Now;
[Required]
public bool Published { get; set; }
}
Контроллер
public class PzzlController : Controller
{
PzzlDB _db = new PzzlDB();
public ActionResult GetParagraph(string placeholder)
{
var viewModel = _db.Paragraphs.GetParagraphByPlaceholder(placeholder);
if (viewModel != null)
{
return PartialView("~/Views/Shared/Pzzl/_Paragraph.cshtml", viewModel);
}
else
{
return null;
}
}
}
Quer у
public static Paragraph GetParagraphByPlaceholder(
this IQueryable<Paragraph> Paragraph, string placeholder)
{
try
{
return Paragraph.Single(p => p.Placeholder == placeholder);
}
catch (Exception)
{
return null;
}
}
Содержание части переменных
Local = 'System.Linq.IQueryable<Pzzl.Models.Pzzl.Paragraph>' does not contain a definition for 'Local' and no extension method 'Local' accepting a first argument of type 'System.Linq.IQueryable<Pzzl.Models.Pzzl.Paragraph>' could be found (are you missing a using di...
StackTrace
[SqlException (0x80131904): Invalid column name 'ParagraphId'.
Invalid column name 'PageId'.
Invalid column name 'LinkUrl'.
Invalid column name 'LinkText'.
Invalid column name 'LinkTarget'.
Invalid column name 'ImageUrl'.
Invalid column name 'ImageLink'.
Invalid column name 'ImageLinkTarget'.
Invalid column name 'ImageAlt'.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +1753986
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5296058
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +558
System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1682
System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() +59
System.Data.SqlClient.SqlDataReader.get_MetaData() +90
System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +365
System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite) +1379
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +175
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +53
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +134
System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) +41
System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) +10
System.Data.Entity.Infrastructure.Interception.<>c__DisplayClassb.<Reader>b__8() +69
System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch(Func`1 operation, TInterceptionContext interceptionContext, Action`1 executing, Action`1 executed) +93
System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.Reader(DbCommand command, DbCommandInterceptionContext interceptionContext) +320
System.Data.Entity.Internal.InterceptableDbCommand.ExecuteDbDataReader(CommandBehavior behavior) +240
System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) +10
System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) +104
[EntityCommandExecutionException: An error occurred while executing the command definition. See the inner exception for details.]
System.Data.Entity.Core.EntityClient.Internal.EntityCommandDefinition.ExecuteStoreCommands(EntityCommand entityCommand, CommandBehavior behavior) +188
System.Data.Entity.Core.Objects.Internal.ObjectQueryExecutionPlan.Execute(ObjectContext context, ObjectParameterCollection parameterValues) +1283
System.Data.Entity.Core.Objects.<>c__DisplayClass3.<GetResults>b__2() +185
System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction(Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess) +499
System.Data.Entity.Core.Objects.<>c__DisplayClass3.<GetResults>b__1() +271
System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Func`1 operation) +251
System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +600
System.Data.Entity.Core.Objects.ObjectQuery`1.<System.Collections.Generic.IEnumerable<T>.GetEnumerator>b__0() +89
System.Lazy`1.CreateValue() +416
System.Lazy`1.LazyInitValue() +152
System.Lazy`1.get_Value() +75
System.Data.Entity.Internal.LazyEnumerator`1.MoveNext() +40
System.Linq.Enumerable.SingleOrDefault(IEnumerable`1 source) +4078797
System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.<GetElementFunction>b__2(IEnumerable`1 sequence) +83
System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.ExecuteSingle(IEnumerable`1 query, Expression queryRoot) +107
System.Data.Entity.Core.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute(Expression expression) +197
System.Data.Entity.Internal.Linq.DbQueryProvider.Execute(Expression expression) +149
System.Linq.Queryable.SingleOrDefault(IQueryable`1 source, Expression`1 predicate) +287
Pzzl.Queries.Pzzl.ParagraphQueries.GetParagraphByPlaceholder(IQueryable`1 Paragraph, String placeholder) in C:\Projects\Speeltuin\MVCWebsite\Portfolio\Pzzl\Queries\Pzzl\ParagraphQueries.cs:43
Portfolio.Controllers.PzzlController.GetParagraphTitle(String placeholder) in C:\Projects\Speeltuin\MVCWebsite\Portfolio\Portfolio\Controllers\PzzlController.cs:17
lambda_method(Closure , ControllerBase , Object[]) +180
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +214
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
Castle.Proxies.ControllerActionInvokerProxy.InvokeActionMethod_callback(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +47
Castle.Proxies.Invocations.ControllerActionInvoker_InvokeActionMethod.InvokeMethodOnTarget() +226
Castle.DynamicProxy.AbstractInvocation.Proceed() +117
Glimpse.Core.Extensibility.CastleInvocationToAlternateMethodContextAdapter.Proceed() +48
Glimpse.Core.Extensibility.ExecutionTimer.Time(Action action) +195
Glimpse.Core.Extensions.AlternateMethodContextExtensions.TryProceedWithTimer(IAlternateMethodContext context, TimerResult& timerResult) +198
Glimpse.Core.Extensibility.AlternateMethod.NewImplementation(IAlternateMethodContext context) +45
Glimpse.Core.Extensibility.AlternateTypeToCastleInterceptorAdapter.Intercept(IInvocation invocation) +183
Castle.DynamicProxy.AbstractInvocation.Proceed() +483
Castle.Proxies.ControllerActionInvokerProxy.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +235
System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +55
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +253
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +21
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +191
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +324
System.Web.Mvc.Controller.ExecuteCore() +106
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +91
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +34
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +19
System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +10
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +48
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.Mvc.<>c__DisplayClassa.<EndProcessRequest>b__9() +22
System.Web.Mvc.<>c__DisplayClass4.<Wrap>b__3() +10
System.Web.Mvc.ServerExecuteHttpHandlerWrapper.Wrap(Func`1 func) +27
System.Web.Mvc.ServerExecuteHttpHandlerWrapper.Wrap(Action action) +65
System.Web.Mvc.ServerExecuteHttpHandlerAsyncWrapper.EndProcessRequest(IAsyncResult result) +71
System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +1097
[HttpException (0x80004005): Fout bij uitvoeren van onderliggende aanvraagelement voor handler 'System.Web.Mvc.HttpHandlerUtil+ServerExecuteHttpHandlerAsyncWrapper'.]
System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride) +3122411
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage) +76
System.Web.HttpServerUtility.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +28
System.Web.HttpServerUtilityWrapper.Execute(IHttpHandler handler, TextWriter writer, Boolean preserveForm) +19
System.Web.Mvc.Html.ChildActionExtensions.ActionHelper(HtmlHelper htmlHelper, String actionName, String controllerName, RouteValueDictionary routeValues, TextWriter textWriter) +483
System.Web.Mvc.Html.ChildActionExtensions.RenderAction(HtmlHelper htmlHelper, String actionName, String controllerName, Object routeValues) +58
ASP._Page_Views_Home_Index_cshtml.Execute() in c:\Projects\Speeltuin\MVCWebsite\Portfolio\Portfolio\Views\Home\Index.cshtml:10
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +197
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +81
System.Web.WebPages.StartPage.RunPage() +17
System.Web.WebPages.StartPage.ExecutePageHierarchy() +62
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +76
System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +222
System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +115
Castle.Proxies.Invocations.IView_Render.InvokeMethodOnTarget() +188
Castle.DynamicProxy.AbstractInvocation.Proceed() +117
Glimpse.Core.Extensibility.CastleInvocationToAlternateMethodContextAdapter.Proceed() +48
Glimpse.Core.Extensibility.ExecutionTimer.Time(Action action) +195
Glimpse.Core.Extensions.AlternateMethodContextExtensions.TryProceedWithTimer(IAlternateMethodContext context, TimerResult& timerResult) +198
Glimpse.Core.Extensibility.AlternateMethod.NewImplementation(IAlternateMethodContext context) +45
Glimpse.Core.Extensibility.AlternateTypeToCastleInterceptorAdapter.Intercept(IInvocation invocation) +183
Castle.DynamicProxy.AbstractInvocation.Proceed() +483
Castle.Proxies.IViewProxy.Render(ViewContext viewContext, TextWriter writer) +202
System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +295
System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
Castle.Proxies.ControllerActionInvokerProxy.InvokeActionResult_callback(ControllerContext controllerContext, ActionResult actionResult) +39
Castle.Proxies.Invocations.ControllerActionInvoker_InvokeActionResult.InvokeMethodOnTarget() +182
Castle.DynamicProxy.AbstractInvocation.Proceed() +117
Glimpse.Core.Extensibility.CastleInvocationToAlternateMethodContextAdapter.Proceed() +48
Glimpse.Core.Extensibility.ExecutionTimer.Time(Action action) +195
Glimpse.Core.Extensions.AlternateMethodContextExtensions.TryProceedWithTimer(IAlternateMethodContext context, TimerResult& timerResult) +198
Glimpse.Core.Extensibility.AlternateMethod.NewImplementation(IAlternateMethodContext context) +45
Glimpse.Core.Extensibility.AlternateTypeToCastleInterceptorAdapter.Intercept(IInvocation invocation) +183
Castle.DynamicProxy.AbstractInvocation.Proceed() +483
Castle.Proxies.ControllerActionInvokerProxy.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +219
System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +23
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +242
System.Web.Mvc.<>c__DisplayClass1e.<InvokeActionResultWithFilters>b__1b() +21
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +177
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +324
System.Web.Mvc.Controller.ExecuteCore() +106
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +91
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +34
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +19
System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +10
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +48
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9628972
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
У вас есть данные в этих таблицах? – Sai
Да, 1 запись в каждой таблице со всеми необходимыми свойствами заполнена – Jop
Вы можете видеть данные в переменной абзаца в методе GetParagraphByPlaceholder? Поместите точку отладки, чтобы увидеть, что состоит из абзаца. – Sai