how add react-loading in react bootstrap table - reactjs

Question

i'm new in reactjs and react bootstrap table. i want add react-loading in my react component before data show. because data show so long. but doesn't work.
this is my code
import React, { Component } from 'react';
import { BootstrapTable, TableHeaderColumn } from 'react-bootstrap-table';
import PageHeader from 'react-bootstrap/lib/PageHeader';
import database from './database';
import root from 'window-or-global';
import Loading from 'react-loading';
class User extends Component {
constructor(props) {
super(props);
this.state = {
text:'',
products: []
};
this.userRef = database.ref('users');
}
componentDidMount() {
this.userRef.on('value', this.gotData, this.errData);
}
gotData = (data) => {
let newProducts = []
const userdata = data.val();
const keys = Object.keys(userdata);
for (let i = 0; i < keys.length; i++) {
const k = keys[i];
newProducts.push({
name: userdata[k].nama, address: userdata[k].address, email: userdata[k].email
});
}
this.setState({products : newProducts});
}
errData = (err) => {
console.log(err);
}
handleClick = (rowKey) => {
alert(this.refs.table.getPageByRowKey(rowKey));
}
render() {
return (
<div>
<Loading type ='spinning-bubbles' color='#e3e3e3' />
<div className="col-lg-12">
<PageHeader>Members</PageHeader>
</div>
<BootstrapTable
ref='table'
data={ this.state.products }
pagination={ true }
search={ true }>
<TableHeaderColumn dataField='name' isKey={true} dataSort={true}>Name</TableHeaderColumn>
<TableHeaderColumn dataField='address' dataSort={true}>Address</TableHeaderColumn>
<TableHeaderColumn dataField='email'>Email</TableHeaderColumn>
</BootstrapTable>
</div>
);
}
}
export default User;
Best wishes! Wish for replying.

Answer 1

For that, first maintain a bool in state variable that will track whether data fetched or not, initial value of that bool will be false.
constructor(){
super();
this.state = {
isDataFetched: false,
}
}
Now there a property of React-Bootstrap-Table, option that is used to set the default values and customise the noDataText, you can use that, like this:
<BootstrapTable
....
options={tableOtions}>
</BootstrapTable>
Now define this tableOtions object and edit the noDataText property, like this:
let tableOtions = {
noDataText: this._setTableOption(),
};
If data is fetched successfully then return some text, that will be displayed if data will be empty, otherwise return a loader:
_setTableOption(){
if(this.state.isDataFetched){
return "No expenses found";
}else{
return(
<RefreshIndicator size={40} left={0} top={0} status="loading" style={{position: 'relative', margin: '0px auto'}}/>
);
}
}
Note: I used a Material-UI RefreshIndicator, you can replace that by any other loader also.
Reference of option object in React Bootstrap Table: http://allenfang.github.io/react-bootstrap-table/docs.html#noDataText
Update: Use this code, and replace the RefreshIndicator by Loader that you want to show:
import React, { Component } from 'react';
import { BootstrapTable, TableHeaderColumn } from 'react-bootstrap-table';
import PageHeader from 'react-bootstrap/lib/PageHeader';
import database from './database';
import root from 'window-or-global';
import Loading from 'react-loading';
class User extends Component {
constructor(props) {
super(props);
this.state = {
text:'',
products: [],
isDataFetched: false,
};
this.userRef = database.ref('users');
}
componentDidMount() {
this.userRef.on('value', this.gotData, this.errData);
}
gotData = (data) => {
let newProducts = []
const userdata = data.val();
const keys = Object.keys(userdata);
for (let i = 0; i < keys.length; i++) {
const k = keys[i];
newProducts.push({
name: userdata[k].nama, address: userdata[k].address, email: userdata[k].email
});
}
this.setState({products : newProducts, isDataFetched: true});
}
errData = (err) => {
console.log(err);
}
handleClick = (rowKey) => {
alert(this.refs.table.getPageByRowKey(rowKey));
}
_setTableOption(){
if(this.state.isDataFetched){
return "No expenses found";
}else{
return(
<RefreshIndicator size={40} left={0} top={0} status="loading" style={{position: 'relative', margin: '0px auto'}}/>
);
}
}
render() {
let tableOtions = {
noDataText: this._setTableOption(),
};
return (
<div>
<Loading type ='spinning-bubbles' color='#e3e3e3' />
<div className="col-lg-12">
<PageHeader>Members</PageHeader>
</div>
<BootstrapTable
ref='table'
data={ this.state.products }
pagination={ true }
search={ true }
options={tableOtions}>
>
<TableHeaderColumn dataField='name' isKey={true} dataSort={true}>Name</TableHeaderColumn>
<TableHeaderColumn dataField='address' dataSort={true}>Address</TableHeaderColumn>
<TableHeaderColumn dataField='email'>Email</TableHeaderColumn>
</BootstrapTable>
</div>
);
}
}
export default User;