autocde2.0/database/migrations/2024_04_07_211410_create_notifications_table.php

<?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
    {
        Schema::create('notifications', function (Blueprint $table) {
            $table->id();
            $table->string('object_type', 30)->comment("action;announcement");
            $table->integer('object_id')->default(0);
            $table->text('content')->nullable();
            $table->timestamp("start_at")->nullable();
            $table->timestamp("end_at")->nullable();
            $table->integer("created_by")->nullable();
            $table->string("status", 30)->nullable();
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('notifications');
    }
};