Unable to use Model.ToDebugString with EF Core 6 preview 4

[ErikEJ]

Include your code

var result =dbContext.Model.ToDebugString(MetadataDebugStringOptions.LongDefault);

And I am not able to find "DesignTimeModel" mentioned in the error message anywhere.

Include stack traces

System.InvalidOperationException: The requested configuration is not stored in the read-optimized model, please use 'DbContext.DesignTimeModel'.
   at Microsoft.EntityFrameworkCore.Metadata.SlimModel.Microsoft.EntityFrameworkCore.Metadata.IReadOnlyModel.GetChangeTrackingStrategy()
   at Microsoft.EntityFrameworkCore.Metadata.IReadOnlyModel.ToDebugString(MetadataDebugStringOptions options, Int32 indent)
   at Modelling.EfCoreModelBuilder.BuildResult(String outputPath, String startupOutputPath, Boolean generateDdl) in C:\Code\EFCorePowerTools\src\GUI\efpt30.core\EFCoreModelBuilder.cs:line 41
   at Modelling.Program.Main(String[] args) in C:\Code\EFCorePowerTools\src\GUI\efpt30.core\Program.cs:line 57

Include provider and version information

EF Core version: 6.0 preview 4
Database provider: Microsoft.EntityFrameworkCore.SqlServer
Target framework: .NET 5.0

[ErikEJ]

Did some spelunking, and found this: 3be1be4
So this works:

dbContext.GetService<IDesignTimeModel>().Model.ToDebugString(MetadataDebugStringOptions.LongDefault);

I guess the issue is about updating the error message then.

[AndriySvyryd]

Fixed in a60795c

[ErikEJ]

@AndriySvyryd I most likely misunderstand, but what exactly was fixed in the linked 125 file PR?
I still do not see DbContext.DesignTimeModel in preview 5 !?

[ErikEJ]

Ping?

[AndriySvyryd]

@AndriySvyryd I most likely misunderstand, but what exactly was fixed in the linked 125 file PR?

Sorry, the specific fix is this is Model condition in a60795c#diff-5f6aa389ba014558ff3ca0fe47cd2c69a874c34e32f4e7ee4d7c7b4841f36748

I still do not see DbContext.DesignTimeModel in preview 5 !?

Now it's context.GetService<IDesignTimeModel>().Model, see dotnet/EntityFramework.Docs#3030

[ErikEJ]

@AndriySvyryd Thanks :-)

[jcummings2]

Did some spelunking, and found this: 3be1be4 So this works:

dbContext.GetService<IDesignTimeModel>().Model.ToDebugString(MetadataDebugStringOptions.LongDefault);

I guess the issue is about updating the error message then.

For those like me who encountered this issue later, you may also need to add:

using Microsoft.EntityFrameworkCore.Infrastructure;

line to find the correct extension method.