How to add react table-Front-end Q&A-php.cn

How to implement the addition of react table: 1. Create two class components in a Table.jsx file; 2. Define variables outside the two components; 3. Create a click-added event method code as " handleAdd = () => { const { data, editingKey } = this.state;let newData = data;..." That's it.

How to add react table

The operating environment of this tutorial: Windows 10 system, react18.0.0 version, Dell G3 computer.

How to add a table in react?

React antd dynamically adds editable rows to Table

## This is implemented based on the editable table example on the antd official website. The newly added editable cell is a sub-component and is introduced by Table. If you have limited understanding of the principles, discussion is welcome.

Take the new schedule information of the activity schedule component in the project as an example

Due to the lack of experience in editing the article before, the readability is too low, so re-edit it Let’s take a look

Implementation process

First, create two class components in a Table.jsx file (you can also use const directly using hook writing here), a sub The component EditableCell, the parent component Schedule, and the child components are mainly used to set editable form elements.

1. Define variables outside the two components first, and use the React.createContext() method to implement the function.

const EditableContext = React.createContext(); 2. First enter the code of the editable cell subcomponent

//子组件class EditableCell extends React.Component {
    getInput = () => {
        const { inputType } = this.props;
        let i = 1
        if (inputType === 'rq') { //可根据不同的inputType来显示不同Form元素，inputType来源于父组件
            return <datepicker></datepicker>;
        }else {
            return <input>
        }
    };
    renderCell = ({ getFieldDecorator }) => {
        const {
            editing,
            dataIndex,
            title,
            record,
            children,
            ...restProps        } = this.props;
        // console.log(record)
        return (
            <td>
                {editing ? ( //editing使用父组件传过来的值，判断是否为编辑状态
                    <formitem>
                        {getFieldDecorator(dataIndex, {
                            rules: [{
                                required: dataIndex === 'bz' || dataIndex === 'id' ? false : true,
                                message: `请输入!`,
                            },
                            ],
                            // initialValue: dataIndex  &&  record[dataIndex] ,
                            initialValue: dataIndex && dataIndex === 'rq' ? (record[dataIndex] ? moment(record[dataIndex]) : null) : record[dataIndex]
                        })(this.getInput())}
                    </formitem>
                ) : (
                        children                    )}
            </td>
        );
    };
    render() {
        return <editablecontext.consumer>{this.renderCell}</editablecontext.consumer>;
    }}

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3. The code of the Schedule part of the parent component

class Schedule extends Component {
	state = {
       data: [],
       editingKey: '',
       dataSource: {}, 
    }//Table渲染的columns，这里只写出三列举例子，在render方法内会重组该数组
	columns = [
	    {
	        className: "columnHead",
	        title: '序号',
	        dataIndex: 'id',
	        key: 'id',
	        width: 60,
	        align: 'center',
	        render: (text, row, index) => <span>{index + 1}</span>
	    },
	    {
	        className: "columnHead",
	        title: '日期',
	        dataIndex: 'rq',
	        key: 'rq',
	        align: 'center',
	        width:100,
	        editable: true,//editable: true是必须加的，哪一列需要编辑就加在哪列
	    },
	    {
	        className: "columnHead",
	        title: '从何地至何地',
	        dataIndex: 'hdzhd',
	        key: 'hdzhd',
	        align: 'center',
	        width:120,
	        editable: true,
	    },
	    {   //该列为操作列，包含编辑、删除、取消、保存按钮，下面代码中的每个方法都在此处定义
			className: "columnHead",
			title: '操作',
			align: 'center',
			render: (text, record) => {
				const { editingKey } = this.state;
				const editable = this.isEditing(record);
				return editable ? (
					<span>
						<popconfirm> this.cancel(record.id)}> //添加了二次确实提醒
							<a>取消</a>
						</popconfirm>
						<divider></divider>
						<editablecontext.consumer>  //保存按钮要用EditableContext包起来
							{(form) => (
								 <a> this.save(form, record.id, record)} style={{ marginRight: 8 }} >保存</a>
							 )}
						 </editablecontext.consumer>
		
					 </span>
				 ) : (
					 <span>
						 <a> this.edit(record.id)}>编辑</a>
						 <divider></divider>
						 <popconfirm> this.delete(record.id)}>
							 <a>删除</a>
						 </popconfirm>
					 </span>
					 );
			}
		}
	]
	render(){
		const components = { //在此处引入可编辑的单元格子组件
			body: {
				cell: EditableCell,
			},
		};
		//重新处理了一下Table的columns
		const columns = this.columns.map((col) => {
			if (!col.editable) {
				return col;
			}
			return {
				...col,
				//此处的数据会传给子组件
				onCell: (record) => ({
					record,
					inputType: col.dataIndex,
					dataIndex: col.dataIndex,
					title: col.title,
					editing: this.isEditing(record),
				}),
			};
		});
		return(
			<editablecontext.provider>
				<table> record.id}
				   dataSource={data}
				   columns={columns}
				   scroll={{ x: "calc(620px + 10%)", y: WinHeight - 580 }}
				   pagination={false}
				   footer={() => <button>+ 新增</button>}
				/>
			
		)
	}}The above code is the code that is simply displayed at the beginning of the page<p></p>
<h5><a id="4_169">4. The default data is empty at first. Clicking the New button will add an editable row</a></h5>Figure 1<p><br><img src="https://img.php.cn/upload/image/514/968/618/1672885464479604.jpg" title="1672885464479604.jpg" alt="How to add react table"></p>
<h5>
<a id="5_172">5. Click on the new event method code</a><pre class="brush:php;toolbar:false">handleAdd = () => { //该方法在Table标签内的footer内定义
	const { data, editingKey } = this.state;
	let newData = data;
	const id = new Date().toString();
	if (newData.length === 0) {
		newData.push({
			id,
			rq: '',
			hdzhd: '',
			gzdd: '',
			nfwdwfdw: '',
			gznr: '',
			bz: ''
		})
	} else {
		if (editingKey !== '') {  //如果上一条还处于编辑状态，不可新增
			message.error('请先保存');
			return;
		}
		const row = {
			id,
			rq: '',
			hdzhd: '',
			gzdd: '',
			nfwdwfdw: '',
			gznr: '',
			bz: ''
		};
		newData.splice(data.length, 1, row);
	}
	this.setState({ data: newData, editingKey: id });};

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The effect after clicking on the new event

Figure 2

How to add react table

At this time, the two operations in the operation column are "Cancel" and "Save"

The editable entire row of cells shown in Figure 2 is The cell subcomponent mentioned at the beginning

If there is no input content for the required items, clicking Save will trigger a prompt message for the required items in the Form form.

Figure 3

How to add react table

If the previous message has not been edited, and you click Add again, you will be prompted to save the previous message first

Code of save operation

save(form, key, record) {
	const { wsCgtzPjxx, data } = this.state;
	form.validateFields((error, row) => {
		if (error) {
			return;
		}
		const { data } = this.state;
		const newData = [...data];
		row.rq = moment(row.rq).format('YYYY-MM-DD') //如果有日期选择框，要用format转一下
		let dataobj = { //接口请求参数，只写了几个
			rq: row.rq,
			hdzhd: row.hdzhd,
			gzdd: row.gzdd,
		}
		const index = newData.findIndex((item) => key === item.id);
		if (index > -1) {
			const item = newData[index];
			newData.splice(index, 1, {
				...item,
				...row,
			});
			http.post('单条数据保存接口调用').then(res => {
				if (res.code === 200) {
					this.initData();//保存后重新获取了一下表格数据
				}
			})
			this.setState({ data: newData, editingKey: '' });
		} else {
			newData.push(row);
			http.post(调用接口, dataobj).then(res => {
				if (res.code === 200) {
					this.initData()
				}
			})
			this.setState({ data: newData, editingKey: '' });
		}
	});}

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Cancel event code in the state of Figure 3

cancel = (key) => {
	if (this.state.isedit) {
		this.setState({ editingKey: '' });
	} else {
		if (key.length > 6) {
			const { data } = this.state;
			const newData = data;
			newData.splice(data.length - 1, 1);
			this.setState({ data: newData, editingKey: key });
		}
		this.setState({ editingKey: '' });
	}};

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After the data is saved, the Table table is displayed as Figure 4

Figure 4

How to add react table At this time, the two operations in the operation column are "edit" and "delete"

Code for editing operation

edit = (key) => {
	this.setState({ editingKey: key, isedit: true });//让单元格变为编辑状态};

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Code for deletion operation

delete = (key) => {
	const { data } = this.state;
	const newData = data;
	const index = newData.findIndex((item) => key === item.id);
	http.get('调用删除接口', { id: key }).then(res => {
		this.initData()
	})
	newData.splice(index, 1);
	this.setState({ data: newData, editingKey: '' });};

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There are deficiencies and need to be supplemented.

This is implemented based on the editable table example on the antd official website. The newly added editable cell is a sub-component. , introduced by Table. If you have limited understanding of the principles, discussion is welcome.

Recommended learning: "

react video tutorial"

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