Convert a string into JSON

Ashutosh

When submitting form data to a webhook, we noticed it automatically gets encoded in Base64. We then need to decode it back into a string to use the form values in the next step. Once it’s decoded into a plain string (essentially a query string), is there a way to convert that string into JSON?

DylanPammett

Ashutosh There isn’t an explicit Wrk Action to convert query strings into a JSON object. The best way to handle this conversion is by using the “Evaluate JavaScript Expression” Wrk Action.

For example, your “JavaScript expression to evaluate” could look like this:

function queryStringToJSON(query) {
  // Remove leading '?' if present
  query = query.startsWith('?') ? query.slice(1) : query;

  const obj = query
    .split('&')
    .filter(Boolean)
    .reduce((acc, pair) => {
      const [key, value] = pair.split('=').map(decodeURIComponent);
      acc[key] = value;
      return acc;
    }, {});

  return JSON.stringify(obj);
}

queryStringToJSON('?name=Wrker&city=Montreal&company=Wrk');

Then, set “Parse JSON response?” to True.

This will produce a structured JSON output like so:

{"name":"Wrker","city":"Montreal","company":"Wrk"}