PianoTime/database/migrations/2018_06_25_230153_create_leaves_table.php

<?php

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

class CreateLeavesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('leaves', function (Blueprint $table) {
            $table->increments('id');
            $table->unsignedInteger('student_id')->nullable()->comment('学员ID');
            $table->unsignedInteger('course_id')->nullable()->comment('课程ID');
            $table->unsignedInteger('student_course_id')->nullable()->comment('学员课程（合同）ID');
            $table->tinyInteger('type')->nullable()->comment('请假类型：1短假；2长假');
            $table->string('days', 50)->nullable()->comment('天数');
            $table->string('remark', 200)->nullable()->comment('说明');
            $table->timestamps();
        });
    }

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