原始系统中,只有采购量和消耗量,需要添加“余”列,并自动计算的余量
具体实现通过查询GPT获得:
提问:
使用antdesign vue的<a-table>组件做一个互动表,每行输入a和b两值,计算c=a+b,然后显示a、b、c
回答:
下面是使用 Ant Design Vue 的 <a-table>
组件创建一个互动表格,其中每行输入 a
和 b
的值,计算并显示 c = a + b
:
<template><a-table :dataSource="data" :columns="columns"><template v-slot:title>Interactive Table</template><template v-slot:expanded-row="{ record }">a: <a-input-number :value="record.a" @change="handleChange(record, 'a')" />b: <a-input-number :value="record.b" @change="handleChange(record, 'b')" />c: {{ record.c }}</template></a-table>
</template><script>
export default {data() {return {data: [{ key: 1, a: 0, b: 0, c: 0 },{ key: 2, a: 0, b: 0, c: 0 },{ key: 3, a: 0, b: 0, c: 0 }],columns: [{ title: 'Key', dataIndex: 'key' },{ title: 'A', dataIndex: 'a' },{ title: 'B', dataIndex: 'b' },{ title: 'C', dataIndex: 'c' }]};},methods: {handleChange(record, field) {record[field] = parseFloat(record[field]);record.c = record.a + record.b;}}
};
</script>
在上述示例中,我们使用了 <a-table>
组件来创建表格,并使用 :dataSource
和 :columns
属性将数据和列定义传递给表格组件。
在 <template v-slot:expanded-row>
中,我们定义了每行展开的内容。在展开的内容中,我们使用 <a-input-number>
组件来输入 a
和 b
的值。v-model
指令绑定了输入框的值到 record.a
和 record.b
,使其与数据源中对应的值保持同步。
通过 @change
事件监听输入框值的变化,调用 handleChange
方法更新数据源中的值,并计算 c
的值。最后,我们通过插值表达式 {{ record.c }}
显示 c
的结果。
这样,每行输入 a
和 b
的值后,c
的值会自动计算并显示在表格中。、
提问:
限制<a-input-number>输入的数字保留小数点后两位
回答:
要限制 <a-input-number>
输入的数字保留小数点后两位,你可以使用 :precision
属性和 toFixed
方法。
下面是修改后的示例代码:
<template><a-table :dataSource="data" :columns="columns"><template v-slot:title>Interactive Table</template><template v-slot:expanded-row="{ record }">a: <a-input-number :value="record.a" @change="handleChange(record, 'a')" :precision="2" />b: <a-input-number :value="record.b" @change="handleChange(record, 'b')" :precision="2" />c: {{ record.c.toFixed(2) }}</template></a-table>
</template><script>
export default {data() {return {data: [{ key: 1, a: 0, b: 0, c: 0 },{ key: 2, a: 0, b: 0, c: 0 },{ key: 3, a: 0, b: 0, c: 0 }],columns: [{ title: 'Key', dataIndex: 'key' },{ title: 'A', dataIndex: 'a' },{ title: 'B', dataIndex: 'b' },{ title: 'C', dataIndex: 'c' }]};},methods: {handleChange(record, field) {record[field] = parseFloat(record[field]);record.c = record.a + record.b;}}
};
</script>
ps:
toFixed(2) 是js自带函数
成品代码:
<template><a-drawertitle="物品入库":maskClosable="false"placement="right":closable="false":visible="show":width="1200"@close="onClose"style="height: calc(100% - 55px);overflow: auto;padding-bottom: 53px;"><a-form :form="form" layout="horizontal"><a-row :gutter="32"><a-col :span="12"><a-form-item label='保管人' v-bind="formItemLayout"><a-input v-decorator="['custodian',{ rules: [{ required: true, message: '请输入保管人!' }] }]"/></a-form-item></a-col><a-col :span="12"><a-form-item label='入库人' v-bind="formItemLayout"><a-input v-decorator="['putUser',{ rules: [{ required: true, message: '请输入入库人!' }] }]"/></a-form-item></a-col><a-col :span="24"><a-form-item label='备注消息' v-bind="formItemLayout"><a-textarea :rows="4" v-decorator="['content',{ rules: [{ required: true, message: '请输入名称!' }] }]"/></a-form-item></a-col><a-col :span="24"><a-table :columns="columns" :data-source="dataList"><template slot="nameShow" slot-scope="text, record"><a-input v-model="record.name"></a-input></template><template slot="typeShow" slot-scope="text, record"><a-input v-model="record.type"></a-input></template><template slot="typeIdShow" slot-scope="text, record"><a-select v-model="record.typeId" style="width: 100%"><a-select-option v-for="(item, index) in consumableType" :value="item.id" :key="index">{{ item.name }}</a-select-option></a-select></template><template slot="unitShow" slot-scope="text, record"><a-input v-model="record.unit"></a-input></template><template slot="amountShow" slot-scope="text, record"><a-input-number v-model="record.amount" :min="1" :step="1" :precision="2" @change="handleChange(record)"/></template><template slot="consumptionShow" slot-scope="text, record"><a-input-number v-model="record.consumption" :min="0" :max="record.amount" :step="1" :precision="2" @change="handleChange(record)"/></template><template slot="priceShow" slot-scope="text, record"><a-input-number v-model="record.price" :min="0"/></template></a-table><a-button @click="dataAdd" type="primary" ghost size="large" style="margin-top: 10px;width: 100%">新增物品</a-button></a-col></a-row></a-form><div class="drawer-bootom-button"><a-popconfirm title="确定放弃编辑?" @confirm="onClose" okText="确定" cancelText="取消"><a-button style="margin-right: .8rem">取消</a-button></a-popconfirm><a-button @click="handleSubmit" type="primary" :loading="loading">提交</a-button></div></a-drawer>
</template><script>
import {mapState} from 'vuex'
const formItemLayout = {labelCol: { span: 24 },wrapperCol: { span: 24 }
}
export default {name: 'stockAdd',props: {stockAddVisiable: {default: false}},computed: {...mapState({currentUser: state => state.account.user}),show: {get: function () {return this.stockAddVisiable},set: function () {}},columns () {return [{title: '序号',dataIndex: 'key'}, {title: '物品名称',dataIndex: 'name',scopedSlots: {customRender: 'nameShow'}}, {title: '所属类型',dataIndex: 'typeId',width: 200,scopedSlots: {customRender: 'typeIdShow'}}, {title: '型号',dataIndex: 'type',scopedSlots: {customRender: 'typeShow'}}, {title: '采购量',dataIndex: 'amount',scopedSlots: {customRender: 'amountShow'}}, {title: '消耗量',dataIndex: 'consumption',scopedSlots: {customRender: 'consumptionShow'}}, {title: '余',dataIndex: 'balance'}, {title: '单位',dataIndex: 'unit',scopedSlots: {customRender: 'unitShow'}}, {title: '单价',dataIndex: 'price',scopedSlots: {customRender: 'priceShow'}}]}},mounted () {this.getConsumableType()},data () {return {dataList: [],formItemLayout,form: this.$form.createForm(this),loading: false,consumableType: [],keynumber: 1}},methods: {getConsumableType () {this.$get('/cos/consumable-type/list').then((r) => {this.consumableType = r.data.data})},dataAdd () {this.dataList.push({key: this.keynumber++, name: '', type: '', typeId: '', unit: '', amount: 0, consumption: 0, balance: 0, price: 0})},reset () {this.loading = falsethis.form.resetFields()},onClose () {this.reset()this.$emit('close')},handleChange (record) {record.balance = (record.amount - record.consumption).toFixed(2)},handleSubmit () {let price = 0this.dataList.forEach(item => {price += item.price * item.amount})this.form.validateFields((err, values) => {values.price = pricevalues.goods = JSON.stringify(this.dataList)if (!err) {this.loading = truethis.$post('/cos/stock-info/put', {...values}).then((r) => {this.reset()this.$emit('success')}).catch(() => {this.loading = false})}})}}
}
</script><style scoped></style>
开始我犯了两个错误:
①把@change="handleChange(record)"加到了<template slot="consumptionShow" slot-scope="text, record">上,应该加到<a-input-number>上才对。
②data-source数据项没有加如key列,编译报错。看了提示信息,感觉到不加key,程序无法将单行record对应到数组中的具体项,无法绑定数组中的数据。有了key才能绑定,这与vue标签的v-for属性
循环类似。