Stable multitenancy

PostFundManagement.Domain/Entities/Contract.cs

@@ -1,8 +1,11 @@
+using PostFundManagement.Domain.Abstractions;
+
 namespace PostFundManagement.Domain.Entities;
 
-[EntityTypeConfiguration<ContractConfiguration, Contract>]
-public class Contract : Models.Contract
+public class Contract : Models.Contract, ITenantEntity
 {
+    public virtual Tenant? Tenant { get; set; }
+
     public virtual Award? Award { get; set; }
 
     public virtual User? Creator { get; set; }
@@ -15,8 +18,8 @@ public sealed class ContractConfiguration : IEntityTypeConfiguration<Contract>
         builder.ToTable(nameof(Contract).Pluralize());
 
         builder.HasKey(pk => pk.Id);
+        builder.Property(f => f.TenantId).IsRequired();
         builder.HasIndex(f => f.AwardId).IsUnique();
-
         builder.Property(f => f.AwardId).IsRequired();
         builder.Property(f => f.CreatedBy).IsRequired();
         builder.Property(f => f.CreatedAt).IsRequired().HasDefaultValueSql("now()");
@@ -28,6 +31,12 @@ public sealed class ContractConfiguration : IEntityTypeConfiguration<Contract>
         builder.Property(f => f.Status).IsRequired().HasConversion<int>().HasDefaultValueSql("1")
             .HasSentinel(ContractStatus.Draft);
 
+        builder.HasOne(f => f.Tenant)
+            .WithMany()
+            .HasForeignKey(fk => fk.TenantId)
+            .IsRequired()
+            .OnDelete(DeleteBehavior.NoAction);
+
         builder.HasOne(f => f.Award)
             .WithOne(f => f.Contract)
             .HasForeignKey<Domain.Entities.Contract>(fk => fk.AwardId)