SailsJS: delete parameters from URL before passing to blueprint

Question

We are building an application which uses SailsJS for backend and ExtJS for frontend. ExtJS automaitcally appends these parameters to every AJAX request coming from its grid: _dc=1421519546371&page=1&start=0&limit=25

I need to remove these parameters on the Sails side before they are passed to the blueprint actions, so that I can take advantage of the blueprint REST API. Where would be the best place to remove these parameters? I can think of my NGINX reverse proxy as one option, but I am sure there is a better place within Sails.

Answer 1

In sails the easiest place would be to remove them with a policy.

RemoveParams.js

module.exports = function(req, res, next) {
    if(req.query._dc) delete req.query._dc
    // ect ....
    next();
};

Alternate method using undocumented req.options. I have not used this, but it would seem to work and was recommended in the comments.

module.exports = function(req, res, next) {
    req.options.values.blacklist = ['_dc']
    // or req.options.values.blacklist.push('_dc') ?? 
    next();
};

If you so choose you could also add your own middleware to replace / remove them as well.