全栈微信小程序商城 学习笔记8.3 product最近新品接口编写

相关知识

数据集

准备工作

application oute.php

Route::get('api/:version/product/recent', 'api/:version.Product/getRecent');

异常处理

applicationlibexceptionProductException.php

<?php

namespace applibexception;


class ProductException extends BaseException
{
    public $code = 404;
    public $msg = '指定商品不存在，请检查商品ID';
    public $errorCode = 20000;
}

参数检验

applicationapivalidateCount.php

<?php
namespace appapivalidate;

class Count extends BaseValidate
{
    protected $rule = [
        'count' => 'isPositiveInteger|between:1,15',
    ];
}

Product模型

applicationapimodelProduct.php，省略部分代码

<?php


namespace appapimodel;


class Product extends BaseModel
{
    //...
    public static function getMostRecent($count) {
        $products = self::limit($count)->order('create_time desc')->select();
        return $products;
    }
}

Product控制器

applicationapicontrollerv1Product.php

<?php

namespace appapicontrollerv1;

use appapimodelProduct as ProductModel;
use appapivalidateCount;
use applibexceptionProductException;

class Product
{
    public function getRecent($count = 15)
    {
        (new Count())->goCheck();
        $products = ProductModel::getMostRecent($count);
        if (!$products)
        {
            throw new ProductException();
        }
        return $products;
    }
}

测试

上面返回的结果中有一个summary摘要字段仅最近新品的接口不需要，不能通过模型的$hidden属性，需要在接口中对summer做隐藏

使用数据集类

applicationdatabase.php

return [
    //...
    'resultset_type'  => 'collection',
    //...
];

applicationapicontrollerv1Product.php

<?php


namespace appapicontrollerv1;


use appapivalidateCount;
use appapimodelProduct as ProductModel;
use applibexceptionProductException;

class Product
{
    public function getRecent($count = 15) {
        (new Count())->goCheck();
        $products = ProductModel::getMostRecent($count);
        // 如果要判断数据集是否为空，不能直接使用empty判断，而必须使用数据集对象的isEmpty方法判断
        if ($products -> isEmpty()) {
            throw new ProductException();
        }
        $products = $products->hidden(['summary']);
        return $products;
    }
}

测试