Example of dynamically overriding locale in Sails.js

example-of-dynamic-override-of-locale-in-sails.js

# Example of dynamically overriding locale in Sails.js

For instance, if your app allows users to pick their preferred language, you might create a [policy](http://sailsjs.com/documentation/concepts/Policies) which checks for a custom language in the user's session, and if one exists, sets the appropriate locale for use in subsequent policies, controller actions, and views:

```js
// api/policies/localize.js
module.exports = function(req, res, next) {
  // If no user is logged in, continue with the default locale.
  if (!req.session.userId) {return next();}
  // Load the user from the database
  User.findOne(req.session.userId).exec(function(err, user) {
    if (err) {return res.serverError(err);}
    // Set the locale to the user's preference
    req.setLocale(user.languagePreference);
  });
};
```