PHP tp6 购物车的流程
作者：互联网
控制层
/加入购物车 表单提交
public function addcart()
{
// if(request()->isGet()){
// //如果是get请求 跳转到首页
// $this->redirect('home/index/index');
// }
//接收数据
$params = input();
// var_dump($params);die;
//参数检测
$validate = $this->validate($params, [
'goods_id' => 'require|integer|gt:0',
'number' => 'require|integer|gt:0',
'spec_goods_id' => 'integer|gt:0',
]);
if($validate !== true){
$this->error($validate);
}
//判断登录状态：已登录，添加到数据表；未登录，添加到cookie
//处理数据 调用封装好的方法
\app\home\logic\CartLogic::addCart($params['goods_id'], $params['spec_goods_id'], $params['number']);
//结果页面展示
//查询商品相关信息以及SKU信息
$goods = \app\common\model\Goods::getGoodsWithSpec($params['spec_goods_id'], $params['goods_id']);
return view('addcart', ['goods' => $goods, 'number' => $params['number']]);
}
public function index()
{
//查询所有的购物记录
$list = \app\home\logic\CartLogic::getAllCart();
// var_dump($list);die;
//对每一条购物记录 查询商品相关信息（商品信息和SKU信息）
foreach($list as &$v){
//$v['goods_id'] $v['spec_goods_id']
$v['goods'] = \app\common\model\Goods::getGoodsWithSpec($v['spec_goods_id'], $v['goods_id'])->toArray();
}
unset($v);
return view('index', ['list' => $list]);
}
/**
* ajax修改购买数量
*/
public function changenum()
{
//接收参数 id number
$params = input();
//参数检测
$validate = $this->validate($params, [
'id' => 'require',
'number' => 'require|integer|gt:0'
]);
if($validate !== true){
$res = ['code' => 400, 'msg' => '参数错误'];
echo json_encode($res);die;
}
//处理数据
\app\home\logic\CartLogic::changeNum($params['id'], $params['number']);
//返回数据
$res = ['code' => 200, 'msg' => 'success'];
echo json_encode($res);die;
}
/**
* ajax删除购物记录
*/
public function delcart()
{
//接收参数
$params = input();
//参数检测
/*$validate = $this->validate($params, [
'id' => 'require'
]);
if($validate !== true){
$res = ['code' => 400, 'msg' => $validate];
echo json_encode($res);die;
}*/
if(!isset($params['id']) || empty($params['id'])){
$res = ['code' => 400, 'msg' => '参数错误'];
echo json_encode($res);die;
}
//处理数据
\app\home\logic\CartLogic::delCart($params['id']);
//返回数据
$res = ['code' => 200, 'msg' => 'success'];
echo json_encode($res);die;
}
/**
* ajax修改选中状态
*/
public function changestatus()
{
//接收参数
$params = input();
//参数检测
$validate = $this->validate($params, [
'id' => 'require',
'status' => 'require|in:0,1'
]);
if($validate !== true){
$res = ['code' => 400, 'msg' => $validate];
echo json_encode($res);die;
}
//处理数据
\app\home\logic\CartLogic::changeStatus($params['id'], $params['status']);
//返回数据
$res = ['code' => 200, 'msg' => 'success'];
echo json_encode($res);die;
}
}
//逻辑层
public static function getAllCart()
{
//判登录断用户是否
if (session('?uid')) {
$user_id = session('uid.id');
$data = \app\home\model\Cart::where('user_id', $user_id)->select();//将列表展示
return $data->toArray();
} else {
$cart = \cookie('cart')?:[];
// dd($cart);
if (empty($cart)) {
return [];
}
$cart_data = unserialize($cart);
// dd($cart_data);
return array_values($cart_data);
}
}
public static function addCart($goods_id, $spec_goods_id, $number, $is_selected)
{
if (session('?uid.id')) {
$user_id = session('uid.id');
// 如果登录
$data = \app\home\model\Cart::where('goods_id', $goods_id)
->where('spec_goods_id', $spec_goods_id)
->where('user_id', $user_id)
->find();
if (!$data) {
// 找到相同的数据
$cart_arr = [
'number' => $number,
'is_selected' => $is_selected,
'spec_goods_id' => $spec_goods_id,
'goods_id' => $goods_id,
'user_id' => $user_id,
];
$goods = \app\home\model\Cart::create($cart_arr);
return $goods;
} else {
$cart_data['number'] = $data['number'] + $number;
\app\home\model\Cart::update($cart_data, ['id' => $data['id']]);
return $data;
}
} else {
// 未登录
// 取出cookie 如果是第一次在浏览器上加购商品是数组；
//如果不是取出cookie值进行反序列hua；
$cart = \cookie('cart') ?: [];
// 拼接$key
$key = $goods_id . '_' . $spec_goods_id;
if (is_array($cart)) {
$cart[$key]= [
'number' => $number,
'is_selected' => $is_selected,
'spec_goods_id' => $spec_goods_id,
'goods_id' => $goods_id,
];
\cookie('cart', serialize($cart));
}
$cart_arr = unserialize($cart);
// dd($cart_arr);
if (isset($cart_arr[$key])) {
// 如果存在键 数量加一
$cart_arr[$key]['number']+= $number;
\cookie('cart', serialize($cart_arr));
// dd($cart_arr);
} else {
$cart_arr[$key] = [
'number' => $number,
'is_selected' => $is_selected,
'spec_goods_id' => $spec_goods_id,
'goods_id' => $goods_id,
];
}
\cookie('cart', serialize($cart_arr));
return array_values($cart_arr);
}
}
// cookie中取出数据
static function getCookie()
{
//如果不是取出cookie值进行反序列hua；
$cart = \cookie('cart') ?: [];
if(empty($cart)){
return [];
}
$cart_arr = unserialize($cart);
foreach ($cart_arr as &$v){
self::addCart($v['goods_id'],$v['spec_goods_id'],$v['number'],$v['is_selected']);
}
unset($val);
\cookie('cart',null);
}
//model层
//获取商品以及sku信息
public static function getGoodsWithSpec($spec_goods_id, $goods_id)
{
//如果有sku的id， 就以之作为查询条件
if($spec_goods_id){
//有sku，且有多个，需要根据sku的id取指定的一个
$where = ['t2.id'=>$spec_goods_id];
}else{
//没有sku， 就根据商品id查询，sku相关的字段都是null
$where = ['t1.id' => $goods_id];
}
//如果没有，就以商品id作为查询条件
$goods = self::alias('t1')
->join('pyg_spec_goods t2', 't1.id=t2.goods_id', 'left')
->field('t1.*, t2.value_ids, t2.value_names, t2.price, t2.cost_price as cost_price2, t2.store_count')
->where($where)
->find();
// //如果sku信息中，price cost_price 大于0，则覆盖商品信息中的对应字段
if($goods['price'] > 0){
$goods['goods_price'] = $goods['price'];
}
if($goods['cost_price2'] > 0){
$goods['cost_price'] = $goods['cost_price2'];
}
return $goods;
}
标签：goods,number,spec,cart,购物车,tp6,params,PHP,id 来源： https://www.cnblogs.com/qsn17501005/p/15748302.html