Hash filter utility. Like strong params.
npm install params
``js`
var params = require('params');
Remove everything, except the supplied keys.
`js
params({ foo: 1, bar: 2, baz: 3 }).only('foo', 'baz');
params({ foo: 1, bar: 2, baz: 3 }).only(['foo', 'baz']);
// => { foo: 1, baz: 3 }
`
Remove the supplied keys.
`js
params({ foo: 1, bar: 2, baz: 3 }).except('foo', 'baz');
params({ foo: 1, bar: 2, baz: 3 }).except(['foo', 'baz']);
// => { bar: 2 }
`
Require given keys
`js
params({ foo: 1, bar: 2, baz: 3 }).require('missing', 'key');
params({ foo: 1, bar: 2, baz: 3 }).require(['missing', 'key']);
// Error: Missing key "missing" for { foo: 1, bar: 2, baz: 3 }
`
Like #only, but mutates the object.
`js
var hash = { foo: 1, bar: 2, baz: 3 };
params(hash)
.permit('foo')
.permit('baz')
.slice()
console.log(hash);
// => { foo: 1, baz: 3 }
`
`
$ npm install params
- Node.js >= 0.6.0
`
$ npm install
$ make test
(The MIT License)
Copyright (c) 2012 Veselin Todorov
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