Enable default zones for 4d systems

database/migrations/2021_08_15_134329_default_zones.php

@@ -0,0 +1,42 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class DefaultZones extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+		Schema::table('domains', function (Blueprint $table) {
+			$table->dropColumn('default');
+		});
+
+		Schema::table('zones', function (Blueprint $table) {
+			$table->boolean('default')->default(FALSE);
+			$table->unique(['zone_id','default']);
+		});
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+		Schema::table('zones', function (Blueprint $table) {
+			$table->dropUnique(['zone_id','default']);
+			$table->dropColumn('default');
+		});
+
+		Schema::table('zones', function (Blueprint $table) {
+			$table->boolean('default')->default(FALSE);
+		});
+    }
+}