在我們開發PC端的項目使用表單時，尤其是crm系統，應該經常會遇到這樣的需求， 用戶需要根據設置來自定義顯示列。 查了element的官方文檔， 並沒有此類組件， 所以手動封裝了一個簡單的組件， 希望能在大家開發此類需求時能夠有所幫助。
效果圖
具體效果圖如下：
自定義顯示列 (可實現拖拽進行排序，點擊選中，再次點擊取消選中) 
按照用戶已設置好的字段排序/顯示/隱藏每一列 
setTable組件
首先實現拖拽排序的話我們需要借助一個插件：
npm install vuedraggable -S
具體的組件代碼如下， 代碼內已寫有詳細的注釋，在這里就不過多贅述了。。
setTable.vue
<template>
<div>
<el-dialog title="自定義顯示列" :visible.sync="dialogVisible" width="50%">
<div class="select-menus menus-box">
<p class="menus-title">拖動區塊調整顯示順序</p>
<div class="menus-content">
<draggable v-model="selected" @update="datadragEnd" :options="{animation:500}">
<transition-group>
<div v-for="menu in selected" :key="menu.field" class="drag-item item">{{menu.name}}</div>
</transition-group>
</draggable>
</div>
</div>
<div class="menus-container menus-box" v-if="fields.length">
<p class="menus-title">選擇顯示列</p>
<div class="menus-content">
<div
class="item"
:class="{active:menu.active}"
v-for="menu of fields"
:key="menu.field"
@click="onSelect(menu)"
>{{menu.name}}</div>
</div>
</div>
<span slot="footer" class="dialog-footer">
<el-button @click="dialogVisible = false">取 消</el-button>
<el-button type="primary" @click="onSave">確 定</el-button>
</span>
</el-dialog>
</div>
</template>
<script>
import draggable from "vuedraggable";
import { getFields, setFields, getFieldControl } from "@/api/user";
export default {
name: "setTable",
inject: ["reload"],
props: {
types: String,
},
components: {
draggable,
},
data() {
return {
dialogVisible: false,
fields: [],//全部菜單
selected: [],//已選中菜單
};
},
watch: {
selected: {
handler(oldVal, newVal) {
if (this.fields.length === 0) {
return;
}
newVal.map((i) => {
this.fields.map((j) => {
if (i.field === j.field) {
// 如果已選中數組內已有相同字段， 則active為true。active主要用來控制全部菜單選中/未選中的樣式
j.active = true;
}
});
});
},
},
},
mounted() {
//為了防止火狐瀏覽器拖拽的時候以新標簽打開
document.body.ondrop = function (event) {
event.preventDefault();
event.stopPropagation();
};
},
methods: {
async getData() {
// 獲取全部菜單數據
const { data: fields } = await getFields({
types: this.types,
});
fields.map((item) => {
// 由於服務器並沒有返回active字段， 為此需要每一條數據增加active字段， 來控制選中的樣式
item.active = false;
});
this.fields = fields;
},
async getFields() {
// 獲取用戶已選中的菜單， 為了再次打開設置時能夠把上次選中菜單回顯到頁面，方便用戶再次修改
let fields = await getFieldControl({
account_id: this.$store.state.user.token.account_id,
userid: this.$store.state.user.token.userid,
types: this.types,
});
this.$nextTick(() => {
this.selected.push(...fields.data);
});
},
async onSave() {
// 保存已選中菜單
await setFields({
account_id: this.$store.state.user.token.account_id,
userid: this.$store.state.user.token.userid,
types: this.types,
content: this.selected,
});
this.reload(); //刷新頁面
},
async open() {
// 打開設置窗口時清空數據，並再次請求獲取最新數據
this.fields = [];
this.selected = [];
this.dialogVisible = true;
await this.getData();
await this.getFields();
},
onSelect(item) {
// 判斷已選中菜單內是否已有點擊選擇的菜單
let findex = this.selected.findIndex((i) => {
return item.field === i.field;
});
if (findex === -1) {
// 如果已選中菜單內沒有, 則添加到最后一條
this.selected.push(item);
} else {
// 如果已選中已有，則點擊時應該對其移除，並把active設置為false， 改變其選中的樣式
item.active = false;
this.selected.splice(findex, 1);
}
},
datadragEnd(evt) {
// 拖動排序
evt.preventDefault();
},
},
};
</script>
<style lang="scss" scoped>
/* 全部菜單 */
.menus-container {
margin-top: 20px;
.menus-content {
.item {
color: #575757;
background: rgba(238, 238, 238, 1);
border: 1px solid rgba(220, 220, 220, 1);
border-radius: 2px 0px 0px 2px;
}
}
}
/* 菜單通用樣式 */
.menus-box {
.menus-title {
margin-top: 10px;
line-height: 32px;
}
.menus-content {
display: flex;
flex-wrap: wrap;
.item {
cursor: pointer;
display: inline-flex;
align-items: center;
justify-content: center;
padding: 8px;
margin: 10px;
border-radius: 3px;
}
.active {
color: #fff;
background: rgba(72, 153, 229, 1);
border-radius: 2px 0px 0px 2px;
}
}
}
/* 已選菜單 */
.select-menus {
.menus-content {
.item {
margin: 0px;
border-radius: 0;
background: rgba(255, 255, 255, 1);
border: 1px solid rgba(220, 220, 220, 1);
}
}
}
</style>
使用
具體使用如下, 在這里已經隱去不必要的業務代碼， 只把最核心實現的代碼貼了出來， 以免對大家產生誤導..
<template>
<div>
<el-table
ref="multipleTable"
:data="tableData"
height="60vh"
:row-class-name="tableRowClassName"
@selection-change="handleSelectionChange"
@row-click="handleRead"
>
<el-table-column type="selection" min-width="55px;"></el-table-column>
<template v-for="(item,index) of fields">
<el-table-column
v-if="item.field==='name'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='gender'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="8%;"
show-overflow-tooltip
>
<template slot-scope="scope">{{scope.row.gender===1?'男':'女'}}</template>
</el-table-column>
<el-table-column
v-if="item.field==='corp_full_name'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="14%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='corp_name'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="12%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='up_date'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="14%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='position'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='remark_mobiles'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="14%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='source_name'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='address'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='detail_address'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='description'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='remark'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='recordContent'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="14%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='owner_name'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
<el-table-column
v-if="item.field==='follow_time'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="8%;"
show-overflow-tooltip
>
<template slot-scope="scope">
<div v-if="scope.row.follow_time===scope.row.createtime">暫無</div>
<div v-else>{{scope.row.follow_time | formatDate}}</div>
</template>
</el-table-column>
<el-table-column
v-if="item.field==='next_follow_time'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="8%;"
show-overflow-tooltip
>
<template slot-scope="scope">
<div v-if="scope.row.next_follow_time===0">暫無</div>
<div v-else>{{scope.row.next_follow_time | formatDate}}</div>
</template>
</el-table-column>
<el-table-column
v-if="item.field==='createtime'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="8%;"
show-overflow-tooltip
>
<template slot-scope="scope">
<div>{{scope.row.createtime | formatDate}}</div>
</template>
</el-table-column>
<el-table-column
v-if="item.field==='updatetime'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="8%;"
show-overflow-tooltip
>
<template slot-scope="scope">
<div>{{scope.row.updatetime | formatDate}}</div>
</template>
</el-table-column>
<el-table-column
v-if="item.field==='is_record'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
>
<template slot-scope="scope">
<div>{{scope.row.is_record === 0 ? '未跟進' : '已跟進' }}</div>
</template>
</el-table-column>
<el-table-column
v-if="item.field==='if_record'"
:key="index"
:prop="item.field"
:label="item.name"
min-width="10%;"
show-overflow-tooltip
></el-table-column>
</template>
<el-table-column label="操作" min-width="8%;">
<template slot-scope="scope">
<el-button @click="handleRead(scope.row)" type="text">詳情</el-button>
</template>
</el-table-column>
<el-table-column align="right" min-width="4%;">
<template slot="header">
<i class="iconfont icongengduo" @click="onMore"></i>
</template>
</el-table-column>
</el-table>
<set-table ref="setting" types="leads"></set-table>
</div>
</template>
<script>
import setTable from "@/components/setTable";
import { getFieldControl } from "@/api/user";
export default {
name: "clues",
components: {
setTable,
},
data() {
return {
fields: [],
};
},
async mounted() {
await this.getFields();
this.clues();
},
methods: {
async getFields() {
let fields = await getFieldControl({
account_id: this.$store.state.user.token.account_id,
userid: this.$store.state.user.token.userid,
types: "leads",
});
this.fields = fields.data;
},
onMore() {
this.$refs.setting.open();
},
},
};
</script>
在這里其實也可以設置成固定的列寬或者通過服務器返回具體的尺寸， 這樣的話就不用寫這么多的if語句了， 會更加方便簡潔..
結束語
其實剛接到這個需求時，感覺挺復雜的, 尤其是需要進行拖動， 還要根據服務器返回不同的字段來進行表單列的排序。 但整體做下來並沒有我想象的那么麻煩。 大家在遇到需求時， 也一定不要一直想的太多， 一定要先去嘗試， 說不定它並沒有你想的那么難..