季度選擇器quarter-picker

實現步驟：

1、季度選擇器組件

<template>
  <div style="display: inline-block;">
    <mark
      style="position: fixed;top: 0;bottom: 0;left: 0;right: 0;background: rgba(0,0,0,0);z-index: 999;"
      v-show="showSeason"
      @click.stop="showSeason=false"
    ></mark>
    <el-input :placeholder="placeholder" v-model="showValue" v-bind="$attrs" @focus="clickInput" ref="inputText">
      <i slot="prefix" class="el-input__icon el-icon-date"></i>
    </el-input>
    <el-card
      class="box-card"
      style="width: 322px;padding: 0 30px 20px;margin-top: 10px;position: fixed;z-index: 9999"
      :style="{top:divTop + 'px'}"
      v-show="showSeason"
      ref="card"
    >
      <div class="clearfix" style="text-align: center;padding: 0;" slot="header">
        <button
          class="el-picker-panel__icon-btn el-date-picker__prev-btn el-icon-d-arrow-left"
          type="button"
          aria-label="前一年"
          @click="prev"
        ></button>
        <span class="el-date-picker__header-label">{{ year }}年</span>
        <button
          class="el-picker-panel__icon-btn el-date-picker__next-btn el-icon-d-arrow-right"
          type="button"
          aria-label="后一年"
          @click="next"
        ></button>
      </div>
      <div class="text item" style="text-align: center;">
        <el-button
          style="width: 40%;color: #606266;float: left;"
          type="text"
          size="medium"
          @click="selectSeason(0)"
        >第一季度
        </el-button>
        <el-button
          style="width: 40%;color: #606266;float: right;"
          type="text"
          size="medium"
          @click="selectSeason(1)"
        >第二季度
        </el-button>
      </div>
      <div class="text item" style="text-align: center;">
        <el-button
          style="width: 40%;color: #606266;float: left;"
          type="text"
          size="medium"
          @click="selectSeason(2)"
        >第三季度
        </el-button>
        <el-button
          style="width: 40%;color: #606266;float: right;"
          type="text"
          size="medium"
          @click="selectSeason(3)"
        >第四季度
        </el-button>
      </div>
    </el-card>
  </div>
</template>

<script>
export default {
  name: "quarter-picker",
  model: {
    prop: 'inputValue',
    event: 'inputValue'
  },
  props: {
    valueArr: {
      type: Array,
      default: () => {
        return ['01-01,03-31', '04-01,06-30', '07-01,09-30', '10-01,12-31'];
      }
    },
    placeholder: {
      type: String,
      default: '請選擇季度'
    },
    inputValue: {
      type: Array,
      default: function() {
        return [];
      }
    },
 changeValue: { type: Function, default: () => {}
    },
    otherData: {
      type: Object,
      default: () => {
        return {}; } }
  },
  mounted() {
    if (this.inputValue != null && this.inputValue.length > 0) {
      this.showText(this.inputValue);
    }
    window.addEventListener('scroll', this.handleScroll, true);
  },
  watch: {
    inputValue(newValue) {
      if (newValue.length > 0) {
        this.showText(newValue);
      } else {
        this.showValue = "";
      }
    }
  },
  data() {
    return {
      showSeason: false,
      showValue: '',
      year: new Date().getFullYear(),
      season: '',
      divTop: 0
    };
  },
  methods: {
    handleScroll() {
      let inputText = this.$refs.inputText.$el;
      if (inputText.getBoundingClientRect().top + 220 > document.body.offsetHeight) {
        this.divTop = inputText.getBoundingClientRect().top - 215;
      } else {
        this.divTop = inputText.getBoundingClientRect().top + 30;
      }
    },
    clickInput() {
      this.handleScroll();
      this.showSeason = true;
    },
    prev() {
      this.year = this.year * 1 - 1;
    },
    next() {
      this.year = this.year * 1 + 1;
    },
    selectSeason(i) {
      let that = this;
      that.season = i + 1; // 得到當前季度
      let arr = that.valueArr[i].split(',');
      let value = [];
      let start = that.year + '-' + arr[0]; // 得到當前季度的開始日期
      let end = that.year + '-' + arr[1]; // 得到當前季度的結束日期
      value.push(start); // 將季度開始日期和季度結束日期存入數組中
      value.push(end);
      if (this.inputValue != null && this.inputValue[0] != value[0]) {
        this.changeValue(value, this.otherData);
      }
      this.$emit('inputValue', value);
      that.showSeason = false;
      this.showText(value);
    },
 showText(value) { // value為數組，數組索引為0的值為季度開始時間 let arr = value[0].split('-'); // 將季度開始時間用-進行分割
      this.year = arr[0];
      let month = arr[1];
      this.season = Math.ceil(month / 3); // 向上取整
      this.showValue = `${this.year}年${this.season}季度`; // 設置顯示格式 }
  }
}
</script>

<style scoped>
._mark {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0);
  z-index: 999;
}

.yearBtn {
  text-align: center;
  padding: 0
}

.box-card {
  width: 322px;
  padding: 0 3px 20px;
  margin-top: 10px;
  position: fixed;
  z-index: 9999
}

.text.item {
  text-align: center;
}

.text.item >>> .el-button {
  width: 40%;
  color: #606266;
}

.text.item ._left {
  float: left;
}

.text.item ._right {
  float: right;
}
</style>

2、引入季度選擇器組件

import QuarterPicker from "../../../components/quarter-picker/index";

3、注冊季度選擇器組件

components: { QuarterPicker },

4、使用季度選擇器組件

<el-table-column label="季度" align="center" width="150px">
        <template slot-scope="scope">
            <quarter-picker v-model="scope.row.quarter" readonly="readonly" :other-data="scope.row" :change-value="saveQuarter" />
        </template>
      </el-table-column>

通過other-data屬性將scope.row傳遞到子組件，通過change-value將saveQuarter方法傳遞到子組件，然后在子組件中調用saveQuarter方法。

其中saveQuarter方法如下：

saveQuarter(value, row) {
        const data = {
          id: row.id,
          start: value[0], // 季度開始日期
          end: value[1]    // 季度結束日期
        };
        inAPI.saveOrUpdateQuarter(data).then(response => {
          if (response.success) {
            this.$message.success(response.msg);
          }
        });
      },

后台可以使用NVARCHAR2存儲季度，長度為6，格式為：年度-季度，如2022-1，2022-2，2022-3，2022-4

將季度開始時間轉化為季度的方法：

private String toQuarter(String start) {
        String[] arr = start.split("-");
        String year = arr[0];
        String month = arr[1];
        int q = Integer.parseInt(month) / 3 + 1;
        return year + "-" + q;
    }

將季度轉成季度開始日期和季度結束日期的方法：

    private List<String> toRange(String quarter) {
        List<String> result = new ArrayList<>();
        String[] arr = quarter.split("-");
        String year = arr[0];
        String q = arr[1];
        switch (q) {
            case "1":
                result.add(year + "-01-01");
                result.add(year + "-03-31");
                break;
            case "2":
                result.add(year + "-04-01");
                result.add(year + "-06-30");
                break;
            case "3":
                result.add(year + "-07-01");
                result.add(year + "-09-30");
                break;
            case "4":
                result.add(year + "-10-01");
                result.add(year + "-12-31");
                break;
        }
        return result;
    }