Refactor. Add data layer

BudgetApp.Data/Migrations/AddCurrencyCodeAndCategoryIcon.cs

@@ -0,0 +1,41 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace BudgetApp.Data.Migrations;
+
+/// <inheritdoc />
+public partial class AddCurrencyCodeAndCategoryIcon : Migration
+{
+    /// <inheritdoc />
+    protected override void Up(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.AddColumn<string>(
+            name: "Icon",
+            table: "Categories",
+            type: "TEXT",
+            maxLength: 10,
+            nullable: false,
+            defaultValue: "");
+
+        migrationBuilder.AddColumn<string>(
+            name: "CurrencyCode",
+            table: "Accounts",
+            type: "TEXT",
+            maxLength: 3,
+            nullable: false,
+            defaultValue: "");
+    }
+
+    /// <inheritdoc />
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.DropColumn(
+            name: "Icon",
+            table: "Categories");
+
+        migrationBuilder.DropColumn(
+            name: "CurrencyCode",
+            table: "Accounts");
+    }
+}