Added migration and Updated model, resource, importer, exporter to add part_validation_3 column and Added part_validation_3 columns to Laser Marking Post (Characteristics and Status) API in CharacteristicsController

database/migrations/2026_10_16_094523_add_part_validation_3_column_in_class_characteristics_table.php

@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        $sql1 = <<<'SQL'
+        ALTER TABLE class_characteristics
+        ADD COLUMN part_validation_3 TEXT DEFAULT NULL
+        SQL;
+
+        DB::statement($sql1);
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        // Schema::table('class_characteristics', function (Blueprint $table) {
+        //     //
+        // });
+    }
+};