repo rework

6/Data/PostgresApplicationDbContextFactory.cs

@@ -0,0 +1,19 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace Example.Data;
+
+public sealed class PostgresApplicationDbContextFactory : IDesignTimeDbContextFactory<PostgresApplicationDbContext>
+{
+    public PostgresApplicationDbContext CreateDbContext(string[] args)
+    {
+        var configuration = DesignTimeConfiguration.Create(includeDevelopmentSettings: false);
+        var connectionString = configuration.GetConnectionString("DefaultConnection")
+            ?? throw new InvalidOperationException("Connection string 'DefaultConnection' was not found.");
+
+        var optionsBuilder = new DbContextOptionsBuilder<PostgresApplicationDbContext>();
+        optionsBuilder.UseNpgsql(connectionString);
+
+        return new PostgresApplicationDbContext(optionsBuilder.Options);
+    }
+}