Add SetDeleteBehavior option to EnumLookupOptions

Author: BalintBanyasz

src/SpatialFocus.EntityFrameworkCore.Extensions/EnumLookupExtension.cs

@@ -67,7 +67,7 @@ public static void ConfigureEnumLookup(this ModelBuilder modelBuilder, EnumLooku
 				string keyName = enumOptions.UseNumberLookup ? nameof(EnumWithNumberLookup<Enum>.Id)
 					: nameof(EnumWithStringLookup<Enum>.Id);
 
-				modelBuilder.Entity(entityType.Name).HasOne(concreteType).WithMany().HasPrincipalKey(keyName).HasForeignKey(property.Name);
+				modelBuilder.Entity(entityType.Name).HasOne(concreteType).WithMany().HasPrincipalKey(keyName).HasForeignKey(property.Name).OnDelete(enumOptions.DeleteBehavior);
 
 				if (enumOptions.UseNumberLookup)
 				{

src/SpatialFocus.EntityFrameworkCore.Extensions/EnumLookupOptions.cs

@@ -7,6 +7,7 @@ namespace SpatialFocus.EntityFrameworkCore.Extensions
 {
 	using System;
 	using Humanizer;
+	using Microsoft.EntityFrameworkCore;
 
 	public class EnumLookupOptions
 	{
@@ -22,6 +23,7 @@ public static EnumLookupOptions Default
 				enumOptions.SetNamingScheme(NamingScheme.SnakeCase);
 				enumOptions.UseNumberLookup = true;
 				enumOptions.UseEnumsWithAttributesOnly = false;
+				enumOptions.DeleteBehavior = DeleteBehavior.Cascade;
 
 				return enumOptions;
 			}
@@ -33,6 +35,8 @@ public static EnumLookupOptions Default
 
 		internal bool UseNumberLookup { get; private set; }
 
+		internal DeleteBehavior DeleteBehavior { get; private set; }
+
 		public EnumLookupOptions Pluralize()
 		{
 			this.postProcessingTableNamingFunction = name => name.Pluralize(false);
@@ -74,5 +78,12 @@ public EnumLookupOptions UseStringAsIdentifier()
 
 			return this;
 		}
+
+		public EnumLookupOptions SetDeleteBehavior(DeleteBehavior deleteBehavior)
+		{
+			DeleteBehavior = deleteBehavior;
+
+			return this;
+		}
 	}
 }