Stable multitenancy

PostFundManagement.Domain/Entities/Budget.cs

@@ -1,10 +1,12 @@
+using PostFundManagement.Domain.Abstractions;
 using static PostFundManagement.Domain.Extensions.Constants;
 
 namespace PostFundManagement.Domain.Entities;
 
-[EntityTypeConfiguration<BudgetConfiguration, Budget>]
-public class Budget : Models.Budget
+public class Budget : Models.Budget, ITenantEntity
 {
+    public virtual Tenant? Tenant { get; set; }
+
     public virtual Project? Project { get; set; }
 
     public virtual User? Creator { get; set; }
@@ -19,6 +21,7 @@ public sealed class BudgetConfiguration : IEntityTypeConfiguration<Budget>
         builder.ToTable(nameof(Budget).Pluralize());
 
         builder.HasKey(pk => pk.Id);
+        builder.Property(f => f.TenantId).IsRequired();
         builder.Property(f => f.ProjectId).IsRequired();
         builder.Property(f => f.CreatedBy).IsRequired();
         builder.Property(f => f.ApprovedBy).IsRequired(false);
@@ -27,6 +30,12 @@ public sealed class BudgetConfiguration : IEntityTypeConfiguration<Budget>
         builder.Property(f => f.Name).IsRequired().HasMaxLength(LabelLength);
         builder.Property(f => f.Amount).IsRequired().HasPrecision(18, 2);
 
+        builder.HasOne(f => f.Tenant)
+            .WithMany()
+            .HasForeignKey(fk => fk.TenantId)
+            .IsRequired()
+            .OnDelete(DeleteBehavior.NoAction);
+
         builder.HasOne(f => f.Project)
             .WithMany()
             .HasForeignKey(fk => fk.ProjectId)