【laralve项目】@11 商品数据库设计-创建数据库迁移文件(2)

<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateGoodsAttributesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('goods_attributes', function (Blueprint $table) {
            $table->increments('id')->comment('商品属性主键id');
            $table->string('name')->comment('商品属性名');
            $table->integer('category_id')->comment('商品属性id');
            $table->timestamps();
        });
    }
    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('goods_attributes');
    }
}

<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateGoodsAttributeValuesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('goods_attribute_values', function (Blueprint $table) {
            $table->increments('id')->comment('商品属性值：主键id');
            $table->string('name')->comment('商品属性值：名称');
            $table->integer('attribute_id')->comment('商品属性值：名称');
            $table->timestamps();
        });
    }
    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('goods_attribute_values');
    }
}

<?php
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateGoodsSkusTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('goods_skus', function (Blueprint $table) {
            $table->increments('id')->comment('sku主键id');
            $table->integer('goods_id')->comment('商品id');
            $table->integer('attribute_id')->comment('属性id');
            $table->integer('attribute_value_id')->comment('属性值id');
            $table->integer('prcture_id')->comment('图片id');
            $table->decimal('price', 8, 2)->default(0)->comment('价格');
            $table->integer('stock')->default(0)->comment('库存');
            $table->timestamps();
        });
    }
    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('goods_skus');
    }
}