How to Pass Query Parameters with Axios in a POST Request?

Passing Query Parameters with Axios

When sending a POST request to an API endpoint that requires query parameters, developers can encounter difficulties when using the Axios library. This question addresses the issue of passing query parameters correctly in an Axios post method.

To solve this problem, the solution lies in utilizing the third parameter of the Axios post method, which is intended for configuration options. By passing an object containing the params key with the desired query parameters as values, developers can specify the parameters to be sent with the request.

For instance, in the given code:

.post(`/mails/users/sendVerificationMail`, {
  mail,
  firstname
})

the data object is being sent as the request body, while the query parameters are not being passed. To correct this, the code should be modified as follows:

.post(`/mails/users/sendVerificationMail`, null, { params: {
  mail,
  firstname
}})

In this configuration, null is used as the second parameter to indicate that no request body is being sent. The query parameters are now passed through the params object in the third parameter. This will result in a POST request with the desired query parameters, which can be observed in the example URL given in the response:

POST
http://localhost:8000/api/mails/users/sendVerificationMail?mail=lol%40lol.com&firstname=myFirstName

By following this approach, developers can successfully pass query parameters with Axios in their POST requests.

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