Models: Small payment fixes

Elwig/Models/PaymentMember.cs

@@ -2,7 +2,7 @@ using Microsoft.EntityFrameworkCore;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Elwig.Models {
-    [Table("payment_member"), PrimaryKey("Year", "AvNr", "MgNr")]
+    [Table("payment_member"), PrimaryKey("Year", "AvNr", "MgNr"), Index("Year", "TgNr", IsUnique = true)]
     public class PaymentMember {
         [Column("year")]
         public int Year { get; set; }
@@ -16,6 +16,9 @@ namespace Elwig.Models {
         [Column("amount")]
         public long AmountValue { get; set; }
 
+        [Column("tgnr")]
+        public int? TgNr { get; set; }
+
         [NotMapped]
         public decimal Amount {
             get => Variant.Season.DecFromDb(AmountValue);

Elwig/Models/PaymentVar.cs

@@ -1,5 +1,6 @@
 using Microsoft.EntityFrameworkCore;
 using System;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace Elwig.Models {
@@ -19,12 +20,17 @@ namespace Elwig.Models {
 
         [NotMapped]
         public DateOnly Date {
-            get {
-                return DateOnly.ParseExact(DateString, "yyyy-MM-dd");
-            }
-            set {
-                DateString = value.ToString("yyyy-MM-dd");
+            get => DateOnly.ParseExact(DateString, "yyyy-MM-dd");
+            set => DateString = value.ToString("yyyy-MM-dd");
         }
+
+        [Column("transfer_date")]
+        public string? TransferDateString { get; set; }
+
+        [NotMapped]
+        public DateOnly? TransferDate {
+            get => TransferDateString != null ? DateOnly.ParseExact(TransferDateString, "yyyy-MM-dd") : null;
+            set => TransferDateString = value?.ToString("yyyy-MM-dd");
         }
 
         [Column("test_variant")]
@@ -68,5 +74,8 @@ namespace Elwig.Models {
 
         [ForeignKey("Year")]
         public virtual Season Season { get; private set; }
+
+        [InverseProperty("Variant")]
+        public virtual ISet<PaymentMember> MemberPayments { get; private set; }
     }
 }

Elwig/Models/Season.cs

@@ -48,6 +48,12 @@ namespace Elwig.Models {
         [InverseProperty("Season")]
         public virtual ISet<Modifier> Modifiers { get; private set; }
 
+        [InverseProperty("Season")]
+        public virtual ISet<PaymentVar> PaymentVariants { get; private set; }
+
+        [InverseProperty("Season")]
+        public virtual ISet<Delivery> Deliveries { get; private set; }
+
         public decimal DecFromDb(long value) {
             return Utils.DecFromDb(value, Precision);
         }