inertia-sails/lib/location.js

The Sails adapter for Inertia.

const { INERTIA, LOCATION } = require('./helpers/inertia-headers')

/**
 * @typedef {import('./types').InertiaRequest} InertiaRequest
 * @typedef {import('./types').InertiaResponse} InertiaResponse
 */

/**
 * @param {InertiaRequest} req
 * @param {InertiaResponse} res
 * @param {string} url
 * @returns {any}
 */
module.exports = function (req, res, url) {
  if (req.get(INERTIA)) {
    // If the method is PUT, PATCH, or DELETE, force a 303 redirect (so the next request is a GET)
    if (['PUT', 'PATCH', 'DELETE'].includes(req.method)) {
      return res.redirect(303, url)
    }
    // If this is an Inertia request, send a 409 Conflict response
    // with the X-Inertia-Location header so the client performs a full window.location visit.
    res.set(LOCATION, url)
    return res.status(409).end()
  }

  // Otherwise, perform a standard redirect (default is typically a 302)
  return res.redirect(url)
}