angular-cn/modules/angular2/docs/cheatsheet/forms.md

@cheatsheetSection
Forms
@cheatsheetIndex 2
@description
`import {FORM_DIRECTIVES} from 'angular2/angular2';`

@cheatsheetItem
`<input [(ng-model)]="userName">`|`[(ng-model)]`
Provides two-way data-binding, parsing and validation for form controls.