Refactor database schema on migration - php

Question

This is my initial migration
Schema::create('orders', function (Blueprint $table) {
$table->id();
$table->String('customer_name');
$table->String('customer_phone');
//others
});
Now, the easy time ended and now I have to move name and phone to customer table. This is my create customer migration. I don't know where to do this operation so I just throw all in the migration.
Schema::create('customers', function (Blueprint $table) {
$table->id();
$table->string('name');
$table->string('phone', 15);
//others
});
$users = DB::table('orders')->select(['customer_name', 'customer_phone'])->distinct()->get();
foreach ($users as $user) {
$attr['name'] = $user->customer_name;
$attr['phone'] = $user->customer_phone;
Customer::create($attr);
}
And alter order migration
Schema::table('orders', function (Blueprint $table) {
$table->unsignedBigInteger('customer_id')->nullable()->after('id');
$table->foreign('customer_id')->references('id')->on('customers');
});
Now I'm stuck with empty customer_id. I have no clue what to do next, except manually insert it by referring to two table, which can take too much time to update hundreds of rows.

Answer 1

Try use this statement on up function.
DB::statement("UPDATE `orders` o SET `customer_id` = (SELECT `id` FROM `customers` WHERE `name` = o.customer_name AND `phone` = o.customer_phone)");
And you might want to drop those two column. Throw this too.
Schema::table('orders', function (Blueprint $table) {
$table->dropColumn(['customer_name', 'customer_phone']);
});