关于apicloud:使用APICloud-AVM多端框架开发课程表功能

一、成果展现

二、性能实现的思路

本我的项目基于APICloud的AVM多端框架编写,因而须要想方法去结构特定数据、而后再扭转数据,本我的项目外围业务就是课程数据的解决,难点就是课表的增加。

我的项目次要针对大学课表进行设计,课程很多中央存在不确定性,如课程周次数可能间断也可能不间断、上课工夫可能1-2节也可能一整天、上课教室也可能不一样,因而课程的数据结构如下图。

后端须要提供以后周、以后周课程数据、增加课程等接口,当然课程数据查问是比较复杂的,这里就不讲。前端次要是将课表信息显示在指定地位,数据比较简单。

1、课程列表页面

(1)以后周课程原始数据构造

这个数据须要再重组,因为须要将课程摆放到指定地位,必须晓得间隔顶部间隔以及本身高度。能够通过上课工夫jie这个参数获取height,top。

 let data = [{
            'name': '大数据可视化技术',
            'room': '机房C414',
            'weekday': '3',
            'bg': '2',
            'jie': '3-4',
            'top': '140px',
            'height': '140px'
 }]

横向分为8份,每份宽度12.5%,高度70px,默认能够显示13节课。课程背景默认有7种款式,星期对应的是left参数也有7种款式,上课节次对应top参数有12种款式具体css如下:

.bg-1 { background: linear-gradient(#facea8, #fe8979)}
.bg-2 { background: linear-gradient(#dfc3fe, #90c5fb)}
.bg-3 { background: linear-gradient(#9deef5, #68e1b5)}
.bg-4 { background: linear-gradient(#eeba93, #dd65c7)}
.bg-5 { background: linear-gradient(#e6f6c9, #68e1b5)}
.bg-6 { background: linear-gradient(#dfc3fe, #dd65c7)}
.bg-7 { background: linear-gradient(#c8e65f, #7abafb)}

.week-1 {left: 12.5%;}
.week-2 {left: 25%;}
.week-3 {left: 37.5%;}
.week-4 {left: 50%;}
.week-5 {left: 62.5%;}
.week-6 {left: 75%;}
.week-0 {left: 87.5%;}

每一门课程都是用相对定位,宽度雷同,依据上课工夫决定高度、地位代码示意如下

<view class="course_list">
        <view v-for="(rs,key) in course_data" :key="key" :class="'course week-'+rs.weekday+' 
        bg-'+rs.bg" :style="'height:'+rs.height+';top:'+rs.top">
                <text class=" course-name">{{rs.name}}</text>
                <text class="course-room">{{rs.room}}</text>
        </view>
</view>

(2)以后周星期数据结构

获取以后周的工夫代码如下

this.setDate(new Date());
        setDate(date) {
            let arr = [];
            let week = date.getDay() - 1;
            date = this.addDate(date, week * -1);
            this.currentFirstDate = new Date(date);
            for (var i = 0; i < 7; i++) {
                arr[i] = this.formatDate(i == 0 ? date : this.addDate(date, 1))
            }
            this.week_data = arr
            this.currentWeek()
        },
        addDate(date, n) {
            date.setDate(date.getDate() + n);
            return date;
        },
        formatDate(date) {
            let year = date.getFullYear();
            let month = (date.getMonth() + 1);
            let day = date.getDate();
            let week = ['周日', '周一', '周二', '周三', '周四', '周五', '周六'][date.getDay()];
            this.currentMonth = month;
            if (month < 10) { month = '0' + month; }
            if (day < 10) { day = '0' + day; }
            return { "week": week, "date": month + '/' + day, "active": false };
        },
        //以后星期
        currentWeek() {
            let date = new Date();
            let weekday = date.getDay();
            if (weekday == 1) {
                this.week_data[0].active = true
            } else if (weekday == 2) {
                this.week_data[1].active = true
            } else if (weekday == 3) {
                this.week_data[2].active = true
            } else if (weekday == 4) {
                this.week_data[3].active = true
            } else if (weekday == 5) {
                this.week_data[4].active = true
            } else if (weekday == 6) {
                this.week_data[5].active = true
            } else if (weekday == 0) {
                this.week_data[6].active = true
            }
        }

上一周以及下一周相应代码

        last() {
            if (this.week > 1) {
                this.week = this.week - 1
                this.setDate(this.addDate(this.currentFirstDate, -7));
            }
        },
        next() {
            if (this.week < 20) {
                this.week = this.week + 1
                this.setDate(this.addDate(this.currentFirstDate, 7));
            }
        },

2、课程增加页面

本我的项目次要针对大学课程进行设计,因为上课工夫地点可能不法则,因而须要思考周次、节次、星期、上课地点几个因素。为了不便用户疾速增加课程,同一门课程可反对增加多个上课工夫。页面业务逻辑只有周次抉择、工夫抉择两个中央有点简单因而将其拆分为两个组件<class-week></class-week> <class-time></class-time>

课程的次要字段如下

name: '大学计算机',       //课程名称
room: '机房C411',        //上课教室
teacher: '李国海',       //任课教师
weekday: '0',            //星期
weeks: '1-9,11-20',      //上课周数
jie: '5-9',              //上课节次
bg:'1',                  //课程色彩,零碎提供7种颜色

大学的课程上课工夫可能不法则上课周数也不肯定是20周,周数大抵分为单双周以及其余,周数的格局如下:
不法则的周次格局:1-9,11,13,15-20
1-20周单周的格局:1,3,5,7,9,11,13,15,17,19
1-20周双周的格局:2,4,6,8,10,12,14,16,18,20
1-20周的格局:1-20
然而这种数据格式对后端数据查问很不敌对。

页面初始数据,默认1-24周全副选中。

(1)单周choose(1),双周choose(2),全选choose(0)具体业务解决源代码如下:

choose(n) {
            for (let i in this.weeks) {
                this.weeks[i].on = false
            }
            if (n == 1) {
                if (this.choose == 1) {
                    this.choose = 3
                } else {
                    this.choose = 1
                    for (let i = 0; i < this.weeks.length; i++) {
                        if (this.weeks[i].week % 2 != 0) {
                            this.weeks[i].on = true
                        }
                    }
                }

            } else if (n == 2) {
                if (this.choose == 2) {
                    this.choose = 3
                } else {
                    this.choose = 2
                    for (let i = 0; i < this.weeks.length; i++) {
                        if (this.weeks[i].week % 2 == 0) {
                            this.weeks[i].on = true
                        }
                    }
                }
            } else if (n == 0) {
                if (this.choose == 0) {
                    this.choose = 3
                } else {
                    this.choose = 0
                    for (let i in this.weeks) {
                        this.weeks[i].on = true
                    }
                }
            }
        }

(2)抉择某一周的函数set_week(i) 源代码如下

set_week(i) {
            if (this.weeks[i].on == true) {
                this.weeks[i].on = false
            } else {
                this.weeks[i].on = true
            }
        }

(3)确定按钮get_weeks()源代码如下

get_weeks() {
            this.mask = false //影藏组件
            let arr = [];
            for (let i = 0; i < this.weeks.length; i++) {
                let on = this.weeks[i].on;
                if (on == true) {
                    arr.push(this.weeks[i].week);
                }
            }

            let result = [];
            let tmp;
            while (tmp = arr.shift()) {
                if (result.length == 0) {
                    result.push([tmp]);
                    continue;
                }
                let e = result[result.length - 1];
                if (tmp == e[e.length - 1] + 1) {
                    e.push(tmp);
                } else {
                    result.push([tmp]);
                }
            }

            for (let i = 0; i < result.length; i++) {
                let res = result[i];
                if (res.length > 1) {
                    result[i] = res[0] + '-' + res[res.length - 1];
                } else {
                    result[i] = res[0] + ''
                }
            }
            for (let i = 0; i < result.length; i++) {
                if (result[i].indexOf("-") != -1) {
                    result[i] = result[i]
                }
            }
            this.fire('GetWeek', { weeks: result.join(',') });//格局为1-9,11,13,15-20
        }

上课工夫组件<class-time></class-time> 外面蕴含星期、上课节次数(留神上课节次数必须是间断的否则须要独自增加另一个上课工夫),次要难点在于判断上课节次数是否间断。
页面初始数据,默认最大上课节次13节。

weekdays: [
                { name: '星期一', on: false },
                { name: '星期二', on: false },
                { name: '星期三', on: false },
                { name: '星期四', on: false },
                { name: '星期五', on: false },
                { name: '星期六', on: false },
                { name: '星期日', on: false }
            ],
            times: base.class_time(),
            num_arr: [],
            mask: false,
            jie: '',
            weekday: 0

    class_time() {
        let data = [
            { 'jie': '1节', 'time': '08:30-09:15' },
            { 'jie': '2节', 'time': '09:25-10:10' },
            { 'jie': '3节', 'time': '10:25-11:10' },
            { 'jie': '4节', 'time': '11:20-12:05' },
            { 'jie': '5节', 'time': '14:00-14:45' },
            { 'jie': '6节', 'time': '14:55-15:40' },
            { 'jie': '7节', 'time': '15:55-16:40' },
            { 'jie': '8节', 'time': '16:50-17:35' },
            { 'jie': '9节', 'time': '17:45-18:30' },
            { 'jie': '10节', 'time': '18:30-19:00' },
            { 'jie': '11节', 'time': '19:00-19:45' },
            { 'jie': '12节', 'time': '19:50-20:35' },
            { 'jie': '13节', 'time': '20:45-21:30' }
        ]
        return data;
    }

抉择上课节次数(如5-9 这里须要判断单击后选中的数据是否为间断的数字)函数set_time(index)源代码如下

set_time(index) {
            let jie = (index + 1);
            //判断是否已增加
            if (this.isInArray(this.num_arr, jie)) {
                this.delArrItem(this.num_arr, jie);
                this.num_arr.sort(function (x, y) {
                    return x - y;
                });
                //console.log('删除' + jie)
                if (this.isContinuityNum(this.num_arr)) {
                    this.times[index].td1 = false
                } else {
                    //console.log('删除后不间断')
                    this.times[index].td1 = true
                    this.num_arr.push(jie);
                    this.num_arr.sort(function (x, y) {
                        return x - y;
                    });
                    api.toast({
                        msg: '上课工夫必须间断'
                    });
                }
            } else {
                this.num_arr.push(jie);
                this.num_arr.sort(function (x, y) {
                    return x - y;
                });
                if (this.isContinuityNum(this.num_arr)) {
                    this.times[index].td1 = true
                } else {
                    //console.log('减少后不间断')
                    this.delArrItem(this.num_arr, jie);
                    this.num_arr.sort(function (x, y) {
                        return x - y;
                    });
                    this.times[index].td1 = false
                    api.toast({
                        msg: '上课工夫必须间断'
                    });
                }
            }
   this.jie =this.num_arr[0]+ '-'+this.num_arr[(this.num_arr.length -1)];//格局1-2
}

        //删除数组元素
        delArrItem(arr, item) {
            for (var i = 0; i < arr.length; i++) {
                if (arr[i] === item) {
                    if (arr[i + 1] === item) {
                        arr.splice(i, 1);
                        i--;
                        continue;
                    }
                    arr.splice(i, 1);
                }
            }
            return arr;
        },
        //判断是否是间断的数字
        isContinuityNum(array) {
            if (!array) {
                //数组为null
                return false;
            }
            if (array.length == 0) {
                //数组为[]
                return true;
            }
            var len = array.length;
            var n0 = array[0];
            var sortDirection = 1;//默认升序
            if (array[0] > array[len - 1]) {
                //降序
                sortDirection = -1;
            }
            if ((n0 * 1 + (len - 1) * sortDirection) !== array[len - 1]) {
                //筛除['3',4,5,6,7,8]
                return false;
            }
            var isContinuation = true;
            for (var i = 0; i < len; i++) {
                if (array[i] !== (i + n0 * sortDirection)) {
                    isContinuation = false;
                    break;
                }
            }
            return isContinuation;
        },

        //判断元素是否在数组外面
        isInArray(arr, value) {
            for (var i = 0; i < arr.length; i++) {
                if (value == arr[i]) {
                    return true;
                }
            }
            return false;
        }

最终前端须要提交给后端的数据格式如下:

yearId: '200',                       //学年id,这里是指那一学期的课程
name: '大学计算机',                    //课程名称
teacher: '李国海',                    //任课教师
bg: '1',                             //课程色彩,零碎提供7种颜色
class_time: [
                { weeks: '1-20', room: '一教A307', weekday: '1', jie: '1-2' },
                { weeks: '1-20', room: '机房C405', weekday: '3', jie: '3-4' }
]

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