Dear support,
if I create a new Windows application and set it to store the shared models in the database, they will be completely ignored.
The system doesn't use them and doesn't store them. If I create new shared models or import them the result is the same.
When I use the filesystem store all works properly.
Kind regards,
Stefan Bugajczyk
Hello Stefan,
I have researched this issue and found that in version 18.2.3, shared ModelDifference and ModelDifferenceAspect records cannot be saved due to the following API change:
BC4471 - Programmatic CRUD operations before a successful user authentication are denied by default
If you do not allow anonymous access to these types, the following exception occurs (it is visible after enabling all Common Language Runtime Exceptions): DevExpress.Xpo.Exceptions.ObjectLayerSecurityException: 'Saving the 'DevExpress.Persistent.BaseImpl.ModelDifference' object is prohibited by security rules.'
Here is an example of how to resolve this issue:
C#using DevExpress.ExpressApp.Security;
using DevExpress.Persistent.BaseImpl;
public partial class DXApplication19WindowsFormsApplication : WinApplication {
...
public DXApplication19WindowsFormsApplication() {
InitializeComponent();
InitializeDefaults();
((SecurityStrategy)Security).AnonymousAllowedTypes.Add(typeof(ModelDifference));
((SecurityStrategy)Security).AnonymousAllowedTypes.Add(typeof(ModelDifferenceAspect));
}
Starting with version 18.2.4, we are going to include these types to the AnonymousAllowedTypes list by default.
If this is not the issue you have encountered, please describe how to reproduce this issue in greater detail and provide your CreateCustomModelDifferenceStore event handler's code.
Hello Stefan,
In version 18.2.4, we are going to include these types in the AnonymousAllowedTypes list by default. So, the above mentioned lines of code will not be necessary after this update.
Yes, in version 18.2.3, it is necessary to add these classes to the AnonymousAllowedTypes collection in ASP.NET applications, too.
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