271 lines
8.2 KiB
JavaScript
271 lines
8.2 KiB
JavaScript
import { url } from '../request';
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Page({
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data: {
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id: '',
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productList: [], // 商品列表
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select_all: false,
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checkbox_productListid: '',
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totalPrice: 0,
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},
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// 计算总价
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calculateTotalPrice() {
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const totalPrice = this.data.productList
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.filter(item => item.checked) // 只计算勾选的商品
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.reduce((sum, item) => sum + item.quantity * item.commoditiesPrice, 0);
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// 格式化总价为两位小数
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const formattedTotalPrice = totalPrice.toFixed(2);
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// 更新 totalPrice
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this.setData({ totalPrice: formattedTotalPrice });
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},
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// 增加商品数量
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increaseQuantity(e) {
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const { index } = e.currentTarget.dataset; // 获取当前商品的索引
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const updatedProductList = [...this.data.productList];
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const item = updatedProductList[index];
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// 增加数量
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if (item.quantity < 999) {
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item.quantity += 1;
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}
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this.setData({ productList: updatedProductList });
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this.calculateTotalPrice(); // 重新计算总价
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},
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// 减少商品数量
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decreaseQuantity(e) {
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const { index } = e.currentTarget.dataset; // 获取当前商品的索引
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const updatedProductList = [...this.data.productList];
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const item = updatedProductList[index];
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// 减少数量
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if (item.quantity > 1) {
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item.quantity -= 1;
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}
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this.setData({ productList: updatedProductList });
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this.calculateTotalPrice(); // 重新计算总价
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},
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// 全选/取消全选
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selectall(e) {
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const newSelectAll = !this.data.select_all;
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const updatedProductList = this.data.productList.map(item => ({
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...item,
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checked: newSelectAll,
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}));
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const checkbox_productListid = newSelectAll
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? updatedProductList.map(item => item.cartId).join(',')
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: '';
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this.setData({
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productList: updatedProductList,
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select_all: newSelectAll,
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checkbox_productListid,
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});
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console.log("arr=", checkbox_productListid);
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this.calculateTotalPrice(); // 重新计算总价
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const selectedProducts = updatedProductList.filter(item => item.checked);
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this.setData({
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selectedProducts, // 存储勾选的商品信息
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});
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console.log(selectedProducts);
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},
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checkboxChange(e) {
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const { value } = e.detail; // 当前选中的值列表
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const updatedProductList = this.data.productList.map(item => ({
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...item,
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checked: value.includes(item.cartId.toString()),
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}));
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const select_all = updatedProductList.every(item => item.checked);
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this.setData({
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productList: updatedProductList,
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select_all,
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});
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this.calculateTotalPrice(); // 更新总价
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// 提取勾选的商品
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const selectedProducts = updatedProductList.filter(item => item.checked);
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this.setData({
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selectedProducts, // 存储勾选的商品信息
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});
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console.log(selectedProducts,'askldjaslkdaslkdjklas');
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},
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// 获取商品数据
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fetchProductDetails(cartItems) {
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const promises = cartItems.map((item) => {
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return new Promise((resolve, reject) => {
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my.request({
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url: url + '/api/commodities/getById/commodities',
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method: 'GET',
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data: { id: item.commoditiesId },
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headers: { 'content-type': 'application/json' },
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success: (res) => {
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console.log(res);
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if (res.data.code === 0) {
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const productData = res.data.data;
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productData.cartId = item.id; // 将 cartId 添加到商品数据中
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productData.quantity = 1; // 默认数量为 1
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resolve(productData);
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} else {
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reject(`商品信息获取失败: ${res.data.message}`);
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}
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},
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fail: (error) => {
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reject(error);
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},
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});
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});
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});
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Promise.all(promises)
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.then((productList) => {
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this.setData({ productList });
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this.calculateTotalPrice(); // 初始化总价
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})
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.catch((error) => {
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console.error('商品信息获取失败: ', error);
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my.alert({ content: '商品信息获取失败，请稍后重试' });
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});
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},
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// 页面加载时获取商品数据
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onLoad() {
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this.setData({
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select_all: false,
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products:[],
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});
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my.getStorage({
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key: 'userInfo',
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success: (res) => {
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const userInfo = res.data;
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if (userInfo && userInfo.cookie) {
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my.request({
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url: url + '/api/cart/selectByUserId',
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method: 'POST',
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data: { id: this.data.id },
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headers: {
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'content-type': 'application/json',
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'Cookie': userInfo.cookie,
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},
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dataType: 'json',
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success: (res) => {
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if (res.data.code === 0) {
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console.log(res);
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const cartItems = res.data.data;
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this.fetchProductDetails(cartItems);
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} else {
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my.alert({
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content: '登录信息已过期，请重新登录',
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});
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my.navigateTo({
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url: '/pages/denglu/denglu',
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});
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}
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},
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fail: (error) => {
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console.error('请求失败: ', JSON.stringify(error));
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my.alert({ content: '请求失败，请稍后重试' });
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},
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});
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}
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else{
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my.alert({
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content:'您未登录，请先登录'
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})
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my.navigateTo({
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url:'/pages/denglu/denglu'
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})
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}
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},
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});
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},
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yichu(e) {
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const cartId = e.currentTarget.dataset.id; // 获取商品的 cartId
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if (!cartId) {
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console.error('没有找到商品cartId');
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my.alert({ content: '商品ID未找到，请稍后重试' });
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return;
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}
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console.log('需要移除的商品cartId:', cartId);
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my.getStorage({
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key: 'userInfo',
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success: (res) => {
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const userInfo = res.data;
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this.setData({
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id: userInfo.id, // 获取 id
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});
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// 发送请求移除商品
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if (userInfo && userInfo.cookie) {
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my.request({
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url: url + '/api/cart/delete',
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method: 'POST',
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data: { id: cartId }, // 使用 cartId 作为参数
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headers: { 'content-type': 'application/json', 'Cookie': userInfo.cookie },
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dataType: 'json',
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success: (res) => {
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console.log(res);
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if (res.data.code === 0) {
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my.alert({ content: '成功移除商品' });
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console.log(res);
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// 更新购物车
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this.updateCartList();
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} else {
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my.alert({ content: '移除商品失败，请稍后重试' });
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console.log(res);
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}
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},
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});
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}
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},
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});
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},
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// 移除后更新
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updateCartList() {
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this.setData({ select_all: false });
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my.getStorage({
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key: 'userInfo',
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success: (res) => {
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const userInfo = res.data;
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if (userInfo && userInfo.cookie) {
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my.request({
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url: url + '/api/cart/selectByUserId', // 获取最新的购物车数据
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method: 'POST',
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data: {
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id: this.data.id
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}, // 使用当前用户ID
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headers: {
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'content-type': 'application/json',
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'Cookie': userInfo.cookie
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},
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dataType: 'json',
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success: (res) => {
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if (res.data.code === 0) {
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const cartItems = res.data.data;
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this.fetchProductDetails(cartItems, userInfo.id);
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} else {
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my.alert({ content: '获取购物车数据失败，请稍后重试' });
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}
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},
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fail: (error) => {
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console.error('请求失败: ', JSON.stringify(error));
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my.alert({ content: '请求失败，请稍后重试' });
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},
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});
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}
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},
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});
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},
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jiesuan() {
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const products = this.data.selectedProducts;
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if(!products || products.length === 0){
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my.alert({
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content:'请选择商品'
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})
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}else{
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const productsStr = JSON.stringify(products)
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const prices =this.data.totalPrice
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my.navigateTo({
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url: '/pages/zhifujiemian/zhifujiemian?products='+encodeURIComponent(productsStr)+ '&prices=' + encodeURIComponent(prices)
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});
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}
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}
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}); |