Can't update record

When trying to update a record for a simple class, I am getting the following error message:

MultiTenantException: 1 modified entities with TenantId not set.

Looking directly at the database, I can see that the TenantID is set just fine when the record was created.

Any ideas why this may be happening?

[AndrewTriesToCode]

Hi again, I see the issue.

Because you are using _context.Update(siteSettings) to do a direct update the tenant id is not set on the “untracked” entity because tenant id is a shadow property in EFCore.

You have a few options:

1. Use TenantNotSetMode.Overwrite which will plug in the tenant Id when saving. Note that this settings will be in effect for any future saves on the same dbcontext in the request.

_context.TenantNotSetMode = TenantNotSetMode.Overwrite;
_context.Update(siteSettings);
await _context.SaveChangesAsync();

1. You can add a property to the SiteSettings class called TenantId which Finbuckle.MultiTenant will use, then if you make sure it gets passed around in the Get/Post requests the tenant Id should be there when you call Update and SaveChanges.

2. Avoid using Update and instead get the entity from the database via EFCore then update this “tracked” entity, then save it.

var siteSettings = await _context.SiteSettings.FirstOrDefaultAsync(m => m.Id == id);
siteSettings.Prop1 = model.Prop1;
siteSettings.Prop2 = model.Prop2;
// etc..
await _context.SaveChangesAsync();

I think option 1 is probably the best way to go here.

[ericsports]

Thanks for the explanation, really appreciate your help.