|
|
// pages/call_roll/call_roll.js
|
|
|
Page({
|
|
|
|
|
|
/**
|
|
|
* 页面的初始数据
|
|
|
*/
|
|
|
data: {
|
|
|
className: "",
|
|
|
students:[
|
|
|
{
|
|
|
id: "102201",
|
|
|
name: "Jhon",
|
|
|
point: 3
|
|
|
},
|
|
|
{
|
|
|
id: "102202",
|
|
|
name: "Kun",
|
|
|
point: 2
|
|
|
},
|
|
|
{
|
|
|
id: "102203",
|
|
|
name: "Tom",
|
|
|
point: 2
|
|
|
},
|
|
|
],
|
|
|
rolling: false, // 控制是否滚动
|
|
|
currentStudentIndex: 0, // 当前选中学生索引
|
|
|
currentStudentName: "", // 当前显示的学生名称
|
|
|
rollInterval: null, // 随机点名的定时器
|
|
|
point: 1, // 设置的积分
|
|
|
},
|
|
|
onLoad: function (options) {
|
|
|
clearInterval(this.data.rollInterval);//清除定时器,防止内存泄漏
|
|
|
console.log(options);
|
|
|
// options 参数包含了从上一个页面传递过来的数据
|
|
|
const receivedClassName = options.className; // 获取传递过来的 className,默认为空字符串
|
|
|
// 更新页面的数据
|
|
|
this.setData({
|
|
|
className: receivedClassName // 将接收到的 className 赋值给页面的 data 属性
|
|
|
});
|
|
|
|
|
|
// const url = `https://your-backend-server.com/api/students?className=${this.data.className}`
|
|
|
//根据className向后端请求数据
|
|
|
wx.request({
|
|
|
url: `http://192.168.152.1:8090/student/${this.data.className}`,
|
|
|
method: 'GET',
|
|
|
success: function(res) {
|
|
|
// 后端返回的数据格式如下:
|
|
|
// {
|
|
|
// students: [
|
|
|
// { id: "102201", name: "Jhon", point: 3 },
|
|
|
// { id: "102202", name: "Kun", point: 2 },
|
|
|
// { id: "102203", name: "Tom", point: 1 }
|
|
|
// ]
|
|
|
// }
|
|
|
if (res.statusCode === 200 && Array.isArray(res.data)) {
|
|
|
// 使用setData方法更新data内的students数组
|
|
|
this.setData({
|
|
|
students: res.data
|
|
|
});
|
|
|
} else {
|
|
|
console.error('请求成功但数据格式不正确或数据不是数组');
|
|
|
}
|
|
|
}.bind(this), // 注意这里使用.bind(this)来确保this指向当前页面实例
|
|
|
fail: function(err) {
|
|
|
console.error('请求失败', err);
|
|
|
}
|
|
|
});
|
|
|
},
|
|
|
|
|
|
setPoint: function(e) {
|
|
|
const value = e.detail.value;
|
|
|
// 简单的正则表达式验证,允许负号和数字
|
|
|
if (/^-?\d+(\.\d+)?$/.test(value)) {
|
|
|
this.setData({
|
|
|
point: value //string类型
|
|
|
});
|
|
|
} else {
|
|
|
// 如果输入无效,可以重置输入框的内容或显示提示
|
|
|
wx.showToast({
|
|
|
title: '请输入有效的数字',
|
|
|
icon: 'none'
|
|
|
});
|
|
|
}
|
|
|
},
|
|
|
|
|
|
// 切换随机点名
|
|
|
toggleRoll: function() {
|
|
|
const { rolling, students, point } = this.data;
|
|
|
if (!rolling) {
|
|
|
this.setData({
|
|
|
currentStudentName: students[0].name, // 设置初始显示的学生名称
|
|
|
});
|
|
|
}
|
|
|
const newRolling = !rolling;
|
|
|
if (newRolling) {
|
|
|
this.startRoll();
|
|
|
} else {
|
|
|
console.log(this.data.currentStudentName)
|
|
|
clearInterval(this.data.rollInterval);
|
|
|
}
|
|
|
this.setData({
|
|
|
rolling: newRolling
|
|
|
});
|
|
|
},
|
|
|
|
|
|
// 开始随机点名
|
|
|
startRoll: function() {
|
|
|
const { students, point } = this.data;
|
|
|
let { currentStudentIndex } = this.data;
|
|
|
const rollInterval = setInterval(() => {
|
|
|
const totalPoints = students.reduce((acc, student) => acc + student.point, 0);
|
|
|
let randomPoint = Math.random() * totalPoints;
|
|
|
let sum = 0;
|
|
|
for (let i = 0; i < students.length; i++) {
|
|
|
sum += students[i].point;
|
|
|
if (randomPoint < sum) {
|
|
|
currentStudentIndex = i;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
this.setData({
|
|
|
currentStudentIndex,
|
|
|
currentStudentName: students[currentStudentIndex].name
|
|
|
});
|
|
|
}, 100); // 每100毫秒更新一次
|
|
|
this.setData({
|
|
|
rollInterval
|
|
|
});
|
|
|
},
|
|
|
|
|
|
confirmPoint: function() {
|
|
|
const Point = parseInt(this.data.point);
|
|
|
const id = this.data.students[this.data.currentStudentIndex].id;
|
|
|
const finalPoint = this.data.students[this.data.currentStudentIndex].point + Point;
|
|
|
if(finalPoint % 13 === 0){
|
|
|
finalPoint += 1; //积分等于13的整数倍加一分
|
|
|
}
|
|
|
// this.data.students[this.data.currentStudentIndex].point += point; 不会重新渲染视图
|
|
|
this.setData({
|
|
|
['students[' + this.data.currentStudentIndex + '].point']: finalPoint //会重新更新并渲染视图
|
|
|
});
|
|
|
const newStu = this.data.students[this.data.currentStudentIndex];
|
|
|
//发送请求更新后端数据
|
|
|
console.log(newStu);
|
|
|
wx.request({
|
|
|
url: 'http://192.168.152.1:8090/student/update',
|
|
|
method: 'PUT',
|
|
|
data: {
|
|
|
point: newStu.point,
|
|
|
name: newStu.name //只发送修改对象
|
|
|
},
|
|
|
header: {
|
|
|
'Content-Type': 'application/json' // 设置请求头,指定数据格式为JSON
|
|
|
},
|
|
|
success: function(res) {
|
|
|
// 处理后端返回的响应
|
|
|
console.log('发送成功', res.data);
|
|
|
// 根据需要更新小程序页面的数据或执行其他操作
|
|
|
},
|
|
|
fail: function(err) {
|
|
|
// 处理请求失败的情况
|
|
|
console.error('发送失败', err);
|
|
|
// 可以向用户显示错误信息或执行其他错误处理操作
|
|
|
}
|
|
|
});
|
|
|
},
|
|
|
|
|
|
|
|
|
goTofunction:function(){
|
|
|
wx.navigateTo({
|
|
|
url: '/pages/function/function',
|
|
|
});
|
|
|
},
|
|
|
}) |