JavaScript: Backbone Sync for legacy web server

gistfile1.js

Backbone.sync = function (method, model, options) {

    var params = _.extend({
        type: 'POST',
        dataType: 'json',
        url: model.url,
        traditional: true,
        contentType: 'application/x-www-form-urlencoded;charset=UTF-8'
    }, options);

    if (method == 'read') {
        params.type = 'GET';
        params.data = model.id
    }

    if (!params.data && model && (method == 'create' || method == 'update' || method == 'delete')) {
        var urlParams = _( model.toJSON() ).serialize();
        $('.request').html( urlParams );
    }

    if (params.type !== 'GET') {
        params.processData = false;
    }

    return $.ajax(params);
};