SailsJS：在传递到蓝图之前从URL删除参数

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.