【发布时间】：2020-05-19 21:20:28
【问题描述】：
我从 material-ui 表切换到 MuiDataTable 是因为它易于使用，但我看到了一个警告，即使组件按预期运行。话虽如此，警告让我很困扰。
以下是组件的代码：
import React from "react";
import CsvDownload from 'react-json-to-csv'
import MUIDataTable from "mui-datatables";
import { messageService } from "../services/order-item-service";
export default class OrderItemComponent2 extends React.Component {
state = {
data: [],
_columns: [],
Header: [],
totalCount: 10,
options: {
pageSize: 16,
page: 0,
filterType: "dropdown",
selectableRows: false,
responsive: "scroll",
resizableColumns: true,
key: ""
}
};
componentDidMount() {
this.subscription = messageService.getMessage().subscribe((message) => {
let result = message;
this.setState({ data: result.message });
this.setState({ Header: [
{
name: 'order_id',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head first-col'>Order Id</th>
),
customBodyRender: (value, i) => (
<span>{ value }</span>
)
}
},
{
name: 'order_item_id',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head sec-col'>Order Item</th>
)
}
},
{
name: 'product_id',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head bg-col'>Prod ID</th>
)
}
},
{
name: 'code_division',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head thr-col'>Div</th>
)
}
},
{
name: 'code_product',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head sm-col'>Prod Code</th>
)
}
},
{
name: 'quantity_due',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head mid-col'>Qty Due</th>
)
}
},
{
name: 'quantity_shipped',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head mid-col'>Qty Sh</th>
)
}
},
{
name: 'price',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head sm-col'>Price</th>
)
}
},
{
name: 'date_shipped',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head mid-col'>Dt Sh</th>
)
}
},
{
name: 'date_due',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head mid-col'>Dt Due</th>
)
}
},
{
name: 'customer_id',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head bg-col'>Cust ID</th>
)
}
},
{
name: 'ship_via',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head mid-col'>Ship Via</th>
)
}
},
{
name: 'value_due',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head sm-col'>Val Due</th>
)
}
},
{
name: 'value_shipped',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head sm-col'>Val Sh</th>
)
}
},
{
name: 'date_order',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head mid-col'>Dt Or</th>
)
}
},
{
name: 'date_modified',
options: {
customHeadRender: () => (
<th className='MuiTableCell-root MuiTableCell-head bg-col'>Dt Mod</th>
)
}
}]
});
this.setState({
totalCount: Math.ceil(this.state.data.length / this.state.pageSize)
});
});
}
componentWillUnmount() {
// unsubscribe to ensure no memory leaks
this.subscription.unsubscribe();
}
getOrderItem() {
this.setState({ data: messageService.getMessage() });
}
render() {
return (
<div>
<CsvDownload className='btn btn-primary' data={ this.state.data } />
<MUIDataTable
title="Order Item"
data={this.state.data}
columns={this.state.Header}
options={this.state.options}
/>
</div>
);
}
}
如您所见，我正在使用 customHeadRender 来制作自定义标题，这就是警告首次出现的时候。除此之外，它按预期运行。
第 33 行是第一个 customHeadRender
像往常一样，提前谢谢
【问题讨论】：
-
我猜，因为您在数据中有自定义渲染功能，您需要将
key属性添加到这些元素。即每列的customHeadRender: () => (<th key="order_id"...>...</th>)。该自定义渲染函数也可能获得一些道具，因此您可以通过它访问列的name属性，而不是复制/粘贴原始字符串，例如customHeadRender: (props) => (<th key={props.name}...>...</th>)我不知道，试着打印道具，看看有没有，如果有，里面有什么用作唯一标识符 -
感谢您回复@Jayce444。是的，我尝试过类似的方法 - customHeadRender: (value, i) => (
{value} )，但我仍然收到同样的错误。明天上班时，我会尝试打印道具 -
k 听起来不错。使用您的方法，除非他们将索引作为第二个参数传递，否则所有键的
i将是undefined，因此所有键都具有相同的键，然后您将收到错误：P 打印出第一个arg 看看那里有什么，如果有的话。否则可能只需要复制粘贴列名，看看是否有效
标签： reactjs mui-datatable