[9.x] Added whenTableHasColumn and whenTableDoesntHaveColumn on Schema Builder

[eusonlito]

On some systems, database schema is updated from multiple sources. This functions simplify the table columns update on migrations.

• Before:

<?php declare(strict_types=1);

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Migrations\Migration;

return new class extends Migration
{
    /**
     * @return void
     */
    public function up(): void
    {
        if (!Schema::hasColumn('product', 'order')) {
            Schema::table('product', function (Blueprint $table) {
                $table->unsignedInteger('order')->default(0);
            });
        }

        if (!Schema::hasColumn('product_attribute', 'order')) {
            Schema::table('product_attribute', function (Blueprint $table) {
                $table->unsignedInteger('order')->default(0);
            });
        }
    }

    /**
     * @return void
     */
    public function down(): void
    {
        if (Schema::hasColumn('product', 'order')) {
            Schema::table('product', function (Blueprint $table) {
                $table->dropColumn('order');
            });
        }

        if (Schema::hasColumn('product_attribute', 'order')) {
            Schema::table('product_attribute', function (Blueprint $table) {
                $table->dropColumn('order');
            });
        }
    }
};

• After

<?php declare(strict_types=1);

use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Migrations\Migration;

return new class extends Migration
{
    /**
     * @return void
     */
    public function up(): void
    {
        Schema::whenTableDoesntHaveColumn('product', 'order', function (Blueprint $table) {
            $table->unsignedInteger('order')->default(0);
        });

        Schema::whenTableDoesntHaveColumn('product_attribute', 'order', function (Blueprint $table) {
            $table->unsignedInteger('order')->default(0);
        });
    }

    /**
     * @return void
     */
    public function down(): void
    {
        Schema::whenTableHasColumn('product', 'order', function (Blueprint $table) {
            $table->dropColumn('order');
        });

        Schema::whenTableHasColumn('product_attribute', 'order', function (Blueprint $table) {
            $table->dropColumn('order');
        });
    }
};

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