ef core实现软删除

protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            foreach (var entityType in modelBuilder.Model.GetEntityTypes())
            {
                entityType.GetOrAddProperty("IsDeleted", typeof(bool));
                var parameter = Expression.Parameter(entityType.ClrType);
                var propertyMethodInfo = typeof(EF).GetMethod("Property").MakeGenericMethod(typeof(bool));
                var isDeletedProperty = Expression.Call(propertyMethodInfo, parameter, Expression.Constant("IsDeleted"));
                BinaryExpression compareExpression = Expression.MakeBinary(ExpressionType.Equal, isDeletedProperty, Expression.Constant(false));
                var lambda = Expression.Lambda(compareExpression, parameter);
                modelBuilder.Entity(entityType.ClrType).HasQueryFilter(lambda);
            }
        }

ChangeTracker.DetectChanges();
            foreach (var item in ChangeTracker.Entries().Where(e => e.State == EntityState.Deleted))
            {
                item.State = EntityState.Modified;
                item.CurrentValues["IsDeleted"] = true;
            }

blogs = db.Blogs
    .Include(b => b.Posts)
    .IgnoreQueryFilters()
    .ToList();