Here I'm trying to transform a functional component into class components! I want to achieve nested navigation open only one whenever I click
import React from 'react';
import ReactDOM from 'react-dom';
import 'antd/dist/antd.css';
import './index.css';
import { Menu } from 'antd';
import { AppstoreOutlined, MailOutlined, SettingOutlined } from '@ant-design/icons';
const { SubMenu } = Menu;
// submenu keys of first level
const rootSubmenuKeys = ['sub1', 'sub2', 'sub4'];
const Sider = () => {
const [openKeys, setOpenKeys] = React.useState(['sub1']);
const onOpenChange = keys => {
const latestOpenKey = keys.find(key => openKeys.indexOf(key) === -1);
if (rootSubmenuKeys.indexOf(latestOpenKey) === -1) {
setOpenKeys(keys);
} else {
setOpenKeys(latestOpenKey ? [latestOpenKey] : []);
}
};
return (
<Menu mode="inline" openKeys={openKeys} onOpenChange={onOpenChange} style={{ width: 256 }}>
<SubMenu key="sub1" icon={<MailOutlined />} title="Navigation One">
<Menu.Item key="1">Option 1</Menu.Item>
<Menu.Item key="2">Option 2</Menu.Item>
<Menu.Item key="3">Option 3</Menu.Item>
<Menu.Item key="4">Option 4</Menu.Item>
</SubMenu>
<SubMenu key="sub2" icon={<AppstoreOutlined />} title="Navigation Two">
<Menu.Item key="5">Option 5</Menu.Item>
<Menu.Item key="6">Option 6</Menu.Item>
<SubMenu key="sub3" title="Submenu">
<Menu.Item key="7">Option 7</Menu.Item>
<Menu.Item key="8">Option 8</Menu.Item>
</SubMenu>
</SubMenu>
<SubMenu key="sub4" icon={<SettingOutlined />} title="Navigation Three">
<Menu.Item key="9">Option 9</Menu.Item>
<Menu.Item key="10">Option 10</Menu.Item>
<Menu.Item key="11">Option 11</Menu.Item>
<Menu.Item key="12">Option 12</Menu.Item>
</SubMenu>
</Menu>
);
};
ReactDOM.render(<Sider />, document.getElementById('container'));
Take care of states with declaring it in constructor
, and you need a render
method so you can paste your return on it. and whenever you call your class function you need this
and to update your state, you'll be required this.setState()
.
import React from "react";
import ReactDOM from "react-dom";
import "antd/dist/antd.css";
import "./index.css";
import { Menu } from "antd";
import {
AppstoreOutlined,
MailOutlined,
SettingOutlined
} from "@ant-design/icons";
const { SubMenu } = Menu;
// submenu keys of first level
const rootSubmenuKeys = ["sub1", "sub2", "sub4"];
class Sider extends React.Component {
constructor() {
super();
this.state = {
openKeys: ["sub1"]
};
}
onOpenChange = (keys) => {
const latestOpenKey = keys.find(
(key) => this.state.openKeys.indexOf(key) === -1
);
if (rootSubmenuKeys.indexOf(latestOpenKey) === -1) {
this.setState({ openKeys: keys });
} else {
this.setState({ openKeys: latestOpenKey ? [latestOpenKey] : [] });
}
};
render() {
const { openKeys } = this.state;
return (
<Menu
mode="inline"
openKeys={openKeys}
onOpenChange={this.onOpenChange}
style={{ width: 256 }}
>
<SubMenu key="sub1" icon={<MailOutlined />} title="Navigation One">
<Menu.Item key="1">Option 1</Menu.Item>
<Menu.Item key="2">Option 2</Menu.Item>
<Menu.Item key="3">Option 3</Menu.Item>
<Menu.Item key="4">Option 4</Menu.Item>
</SubMenu>
<SubMenu key="sub2" icon={<AppstoreOutlined />} title="Navigation Two">
<Menu.Item key="5">Option 5</Menu.Item>
<Menu.Item key="6">Option 6</Menu.Item>
<SubMenu key="sub3" title="Submenu">
<Menu.Item key="7">Option 7</Menu.Item>
<Menu.Item key="8">Option 8</Menu.Item>
</SubMenu>
</SubMenu>
<SubMenu key="sub4" icon={<SettingOutlined />} title="Navigation Three">
<Menu.Item key="9">Option 9</Menu.Item>
<Menu.Item key="10">Option 10</Menu.Item>
<Menu.Item key="11">Option 11</Menu.Item>
<Menu.Item key="12">Option 12</Menu.Item>
</SubMenu>
</Menu>
);
}
}
ReactDOM.render(<Sider />, document.getElementById("container"));
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