baoshi-was/database/migrations/2021_03_09_131039_change_procurements_time_column.php

<?php

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

class ChangeProcurementsTimeColumn extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('procurements', function (Blueprint $table) {
            $table->dropColumn('time');
            $table->timestamp('deadline')->nullable()->comment('接单倒计时');
        });

    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('procurements', function (Blueprint $table) {
            $table->timestamp('time')->nullable()->comment('接单倒计时');
            $table->dropColumn('deadline');
        });
    }
}