CODEWITHSUNDEEP
reactjs
Joseph Akayesi
Joseph Akayesi

Reputation: 471

Map data to table in ReactJS

I have successfully retrieved data from my API and set that data to setOfAllBooks state. I want to map the data in setOfAllBooks to a within the component. The page loads with the header alright but my data isn't there. I think there should be something wrong with mmy map() function.

import React, { Component } from 'react';
import './ViewAll.css';
import axios from 'axios'
const rootURL = 'http://localhost:5000';

const TableRow = ({ row }) => (
    <tr class="table-light">
        <th scope="row" key={row.title}>{row.title}</th>
        <td key={row.author}>{row.author}</td>
        <td key={row.isbn}>{row.isbn}</td>
        <td key={row.isbn}>24</td>
    </tr>
)

const Table = ({data}) => (
    <table class="table table-hover">
        <thead>
            <tr class="table-primary">
                <th scope="col">Title</th>
                <th scope="col">Author</th>
                <th scope="col">ISBN</th>
                <th scope="col">No. Of Copies</th>
            </tr>
        </thead>
        <tbody>
            {data.map(row => {
                <TableRow row={row} />
            })}
        </tbody>
    </table>

)
class ViewAll extends Component {
    constructor(props){
        super(props);

        this.state = {
            setOfAllBooks: []
        }
    }

    componentDidMount(){
        axios.get(`${rootURL}/api/book/viewAll`)
            .then(res => {
                this.setState({ setOfAllBooks: res.data });
                console.log(this.state.setOfAllBooks)
            })
    }

    render(){
        return(          
            <div>
                <Table data={this.state.setOfAllBooks} />       
            </div>
        )
    }
}

export default ViewAll;

Upvotes: 0

Views: 130

Answers (1)

Arup Rakshit
Arup Rakshit

Reputation: 118299

You missed return inside the .map call.

{data.map(row => {
  // Missing return here. Add return, otherwise
  // callback function of the map returns undefined
  // which is the default return value of each functions
  // in JS
  <TableRow row={row} />
 // return <TableRow row={row} /> will fix it.

})}

Or write the implicit return version of the arrow function.

{data.map(row => <TableRow row={row} />)}

Upvotes: 4

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