express-autoroute-json/lib/helpers/mergeQueries.js

Express Auto Route Json is an automatic JSON 'REST' api builder for express-autoroute

var _ = require('underscore')._;

module.exports = function (first, second) {
    
    var commonKeys = _.intersection(first ? _.keys(first) : [], second ? _.keys(second) : []);
    
    var output = _.extend(_.omit(first || {}, commonKeys), _.omit(second || {}, commonKeys));

    _.each(commonKeys, function (key) {
        output["$and"] = [first, second];
    })
    return output;
}