AxiosError : Request failed with status code 400 (in React JS)

Question

I am trying to post comments using axios. When I submit my datas entered in the form, I see this error in the console :

AxiosError {message: 'Request failed with status code 400', name: 'AxiosError', code: 'ERR_BAD_REQUEST', config: {…}, request: XMLHttpRequest, …}

Here is my code :

import React, { useState } from 'react'
import TextField from '@material-ui/core/TextField';
import { Button } from '@material-ui/core'
import CommentsAPI from '../../Services/CommentsAPI'

export default function CommentForm() {

    const [comment, setComment] = useState({})

    const handleSubmit = async (event) => {
        event.preventDefault();
        try {
            const data = CommentsAPI.create(JSON.stringify(comment))
            console.log(data)
        } catch (error) {
            console.log(error)
        }
    }

    const handleChange = (event) => {
        const {name, value} = event.currentTarget
        setComment({
            ...comment,
            [name]: value
        })
    }

    return (
        <form onSubmit={handleSubmit}>
            <div>
                <TextField 
                    id="pseudo" 
                    label="Pseudo" 
                    type="text" 
                    onChange={handleChange}
                    name="pseudo"
                />
            </div>
            <div>
                <TextField
                    id="outlined-multiline-static"
                    label="Comment"
                    multiline
                    minRows={2}
                    onChange={handleChange}
                    name="content"
                />
            </div>
            <div>
                <Button variant="contained" color="primary" type="submit">
                    Send
                </Button>
            </div>
        </form>
    )
}

CommentsAPI.js file :

import { URL_COMMENTS } from '../config'
import axios from 'axios'

function create(comment) {
    return axios.post(URL_COMMENTS, comment)
}

const CommentsAPI = {
    create
}

export default CommentsAPI

I am trying to understand what is wrong. Thank you very much for your help !

Have a look on my server :

Collection type

Permission with POST api url

Answer 1

You're not sending anything to your API. CommentsAPI.create(YOUR COMMENT HERE)

const handleSubmit = async (event) => {
    event.preventDefault();
    try {
        // const data = CommentsAPI.create() // WRONG !
        // Create expects a comment, send something !
        const data = CommentsAPI.create('This is a test');
        // Or send the valu in your state
        // const data = CommentsAPI.create(comment.content);
    } catch (error) {
        console.log(error)
    }
}

Also, in your server you will need to return helpful error message. Like 'Hey, there is no message, please send a message in the payload'. That will help you understand better what's going on.