CODEWITHSUNDEEP
node.jsreactjsexpress
Person
Person

Reputation: 2259

How to return json data from 400 error to React from Express?

I have an array of errors on my backend which I want to send back to client to display.

I'm making the request in my action like so

export const registerUser = registeredUserData => async (dispatch) => {
    const response = await axios.post('/user/register', registeredUserData);
};

And on backend I have something like this

if (errors && errors.length) {
    res.status(400).json({ errors });
  }

My question is how can I get errors array back to the client?

I tried wrapping await in try catch but error in catch only contains a name of error and it doesn't have the data.

What works is if I get rid of status(400). Then it is gets handled like succesfull call and data is assigned to response variable.

Is there a way to keep status of error and at the same time catch the data on client side?

Upvotes: 1

Views: 1602

Answers (3)

ravibagul91
ravibagul91

Reputation: 20755

You can use this,

export const registerUser = registeredUserData => async (dispatch) => {
  axios.post('/user/register', registeredUserData)
    .then(function (response) {
      console.log(response);
    })
    .catch(function (error) {
      console.log(error);
    });
};

Upvotes: 1

Amol B Jamkar
Amol B Jamkar

Reputation: 1257

Use try/catch in your function

try {
    const response = await axios.post('/user/register', registeredUserData);
} catch (e) {
    console.log(e);
}

When success request comes then you will get data in the response or catch block will print the error.

Upvotes: 2

Mykybo
Mykybo

Reputation: 1499

Do this:

catch (error) {
    if (error.response) {
        console.log(error.response.data); // => the response payload 
    }
}

Upvotes: 7

Related Questions