MeJiGer Posts - Answer Overflow

MeJiGer

•Created by MeJiGer on 1/5/2024 in #help

[ERCore7.0] Customize ModelValidator {Microsoft.EntityFrameworkCore.Infrastructure}

i making CutsmonModelValidator to rewirte ValidateNoMutableKeys() method to design another logic. now i hope use CutsmonModelValidator replace EFCore underly ModelValidator or RelationalModelValidator. sorry, i comfrom asian contry and my english is weak. IDE：VS 2022 Environment： .Net7 & EFCore 7.0 CutsmonModelValidator：

 public class CutsmonModelValidator :
        Microsoft.EntityFrameworkCore.Infrastructure.ModelValidator {

        public CutsmonModelValidator() : base(null) {

        }
        public CutsmonModelValidator(ModelValidatorDependencies dependencies) :base(dependencies) {
           
        }

        protected override void ValidateNoMutableKeys(IModel model, IDiagnosticsLogger<DbLoggerCategory.Model.Validation> logger) {
            /*
             * my validate logic
             */


            //base.ValidateNoMutableKeys(model, logger);
        }
    }

 public class CutsmonModelValidator :
        Microsoft.EntityFrameworkCore.Infrastructure.ModelValidator {

        public CutsmonModelValidator() : base(null) {

        }
        public CutsmonModelValidator(ModelValidatorDependencies dependencies) :base(dependencies) {
           
        }

        protected override void ValidateNoMutableKeys(IModel model, IDiagnosticsLogger<DbLoggerCategory.Model.Validation> logger) {
            /*
             * my validate logic
             */


            //base.ValidateNoMutableKeys(model, logger);
        }
    }

i trying follow code in Program.cs

EntityFrameworkRelationalServicesBuilder.CoreServices.Remove(typeof(IModelValidator));
ServiceCollection Services = new ServiceCollection();
EntityFrameworkServicesBuilder EntityFrameworkServicesBuilder;
EntityFrameworkServicesBuilder = new EntityFrameworkServicesBuilder(Services);
EntityFrameworkServicesBuilder.TryAddProviderSpecificServices((ServiceCollectionMap ByServices) => {
    ByServices.TryAddSingleton<IModelValidator, ExtendRelationalModelValidator>();
});

EntityFrameworkRelationalServicesBuilder.CoreServices.Remove(typeof(IModelValidator));
ServiceCollection Services = new ServiceCollection();
EntityFrameworkServicesBuilder EntityFrameworkServicesBuilder;
EntityFrameworkServicesBuilder = new EntityFrameworkServicesBuilder(Services);
EntityFrameworkServicesBuilder.TryAddProviderSpecificServices((ServiceCollectionMap ByServices) => {
    ByServices.TryAddSingleton<IModelValidator, ExtendRelationalModelValidator>();
});

and run test code try insert new entity, but i got exception.

InvalidOperationException: The database provider attempted to register an implementation of the 'IModelValidator' service. This is not a service defined by Entity Framework and as such must be registered as a provider-specific service using the 'TryAddProviderSpecificServices' method.

InvalidOperationException: The database provider attempted to register an implementation of the 'IModelValidator' service. This is not a service defined by Entity Framework and as such must be registered as a provider-specific service using the 'TryAddProviderSpecificServices' method.

What should I do?

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