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总结vue映射的方法与混入的使用过程

2022-04-12 15:42:53 作者：云中漫步ZDC

这篇文章主要介绍了总结vue映射的方法与混入的使用过程，具有很好的参考价值，希望对大家有所帮助。如有错误或未考虑完全的地方，望不吝赐教

vue映射方法与混入使用

v-select中的内容封装

场景：当在不同的组件中共同使用一些select的"内容"就可以将这些内容封装在一个文件里

1.cig2.0/src/contants.js

export const data = {
  whether: [
    //是/否
    { value: 1, label: "是" },
    { value: 0, label: "否" }
  ],
  hour: [
    { value: "0", label: "0" },
    { value: "1", label: "1" },
    { value: "2", label: "2" },
    { value: "3", label: "3" },
    { value: "4", label: "4" },
    { value: "5", label: "5" },
    { value: "6", label: "6" },
    { value: "7", label: "7" },
    { value: "8", label: "8" },
    { value: "9", label: "9" },
    { value: "10", label: "10" },
    { value: "11", label: "11" },
    { value: "12", label: "12" },
    { value: "13", label: "13" },
    { value: "14", label: "14" },
    { value: "15", label: "15" },
    { value: "16", label: "16" },
    { value: "17", label: "17" },
    { value: "18", label: "18" },
    { value: "19", label: "19" },
    { value: "20", label: "20" },
    { value: "21", label: "21" },
    { value: "22", label: "22" },
    { value: "23", label: "23" }
  ],
  //分钟
  minute: [
    { value: "0", label: "0" },
    { value: "30", label: "30" }
  ],
};
export function getValues(key) {
  //debugger
  return JSON.parse(JSON.stringify(data[key] || []));
}

2.在需要使用select的组件里引入【混入】

在混入文件里返回封装的select的内容应用到组件中使用select的地方

引入混入：

import MixSearch from “@/mixins/mix-search.js”;
let mixSearch = MixSearch(); //因为在mix-search.js文件里 export default 是一个function()
mixins: [mixSearch]

import {getValues} from "@/contants.js"
let cache = {}
function saveCache(key, value) {
    if (!key) return;
    if (value) {
        cache[key] = JSON.stringify(value)
    } else {
        if (!cache[key]) return
        return JSON.parse(cache[key])
    }
}
export default function (ext) {
    ext = ext || {}
    let mixin = {
        data() {
            return {
                fullscreenLoading: false,
                pageBean: {
                    pageSize: 10,
                    page: 1,
                    showTotal: true
                },
                searchModel: JSON.parse(JSON.stringify(ext))
            }
        },
        methods: {
            async payload(fn, fail) {
                try {
                    this.fullscreenLoading = true;
                    await fn()
                } catch (e) {
                    console.error(e)
                }
                this.fullscreenLoading = false;
            },
            getKeyValues(key, opt) {
                return getValues(key, opt)
            },
            // 映射字段
            getSelectLabel(type, id) {
                for (let i = 0; i < type.length; i++) {
                    if (type[i].value == id) {
                        return type[i].label
                    }
                }
            }
        },
        created() {
            let {pageBean, searchModel} = saveCache(this.$options.name) || {}
            if (pageBean) {
                this.pageBean = pageBean;
                this.searchModel = searchModel;
            }
        },
        beforeDestroy() {
            saveCache(this.$options.name, {pageBean: this.pageBean, searchModel: this.searchModel})
        }
    }
    return mixin
}

 <div style="display: flex;justify-content: left">
                        <el-form-item label="更新时间期限：" class="dataTimeBox">
                          <el-select
                                  placeholder="请选择"
                                  v-model="day.hour"
                          >
                            <el-option
                                    v-for="(item,index) in getKeyValues('hour')"
                                    :key="index"
                                    :label="item.label"
                                    :value="item.value"
                            ></el-option>
                          </el-select>
                          <span> 时 </span>
                          <el-select
                                  placeholder="请选择"
                                  v-model="day.minute"
                          >
                            <el-option
                                    v-for="(item,index) in getKeyValues('minute')"
                                    :key="index"
                                    :label="item.label"
                                    :value="item.value"
                            ></el-option>
                          </el-select>
                          <span> 分</span>
                        </el-form-item>
                      </div>