angular-docs-cn/public/docs/js/latest/api/forms/NgFormModel-class.jade

p.location-badge.
  exported from <a href='../forms'>angular2/forms</a>
  defined in <a href="https://github.com/angular/angular/tree/2.0.0-alpha.34/modules/angular2/src/forms/directives/ng_form_model.ts#L15-L142">angular2/src/forms/directives/ng_form_model.ts (line 15)</a>

:markdown
  Binds an existing control group to a DOM element.
  
  # Example
  
  In this example, we bind the control group to the form element, and we bind the login and
  password controls to the
  login and password elements.
  
   ```
  @Component({selector: "login-comp"})
  @View({
       directives: [formDirectives],
       template: "<form [ng-form-model]='loginForm'>" +
               "Login <input type='text' ng-control='login'>" +
               "Password <input type='password' ng-control='password'>" +
               "<button (click)="onLogin()">Login</button>" +
               "</form>"
       })
  class LoginComp {
   loginForm:ControlGroup;
  
   constructor() {
     this.loginForm = new ControlGroup({
       login: new Control(""),
       password: new Control("")
     });
   }
  
   onLogin() {
     // this.loginForm.value
   }
  }
  
   ```
  
  We can also use ng-model to bind a domain model to the form.
  
   ```
  @Component({selector: "login-comp"})
  @View({
       directives: [formDirectives],
       template: "<form [ng-form-model]='loginForm'>" +
               "Login <input type='text' ng-control='login' [(ng-model)]='login'>" +
               "Password <input type='password' ng-control='password' [(ng-model)]='password'>" +
               "<button (click)="onLogin()">Login</button>" +
               "</form>"
       })
  class LoginComp {
   credentials:{login:string, password:string}
   loginForm:ControlGroup;
  
   constructor() {
     this.loginForm = new ControlGroup({
       login: new Control(""),
       password: new Control("")
     });
   }
  
   onLogin() {
     // this.credentials.login === 'some login'
     // this.credentials.password === 'some password'
   }
  }
   ```
  
  

.l-main-section
  h2 Annotations
  .l-sub-section
    h3.annotation Directive
    pre.prettyprint
      code.
        @Directive({
          selector: &#39;[ng-form-model]&#39;,
          bindings: [formDirectiveBinding],
          properties: [&#39;form: ng-form-model&#39;],
          lifecycle: [LifecycleEvent.onChange],
          host: {
            &#39;(submit)&#39;: &#39;onSubmit()&#39;,
          },
          events: [&#39;ngSubmit&#39;],
          exportAs: &#39;form&#39;
        })


.l-main-section
  h2 Members
  .l-sub-section
    h3 form

    
    :markdown
      
      





  .l-sub-section
    h3 directives

    
    :markdown
      
      





  .l-sub-section
    h3 ngSubmit

    
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  .l-sub-section
    h3 onChange

    
    pre.prettyprint
      code.
        onChange(_: any)
    
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  .l-sub-section
    h3 formDirective

    
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  .l-sub-section
    h3 control

    
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  .l-sub-section
    h3 path

    
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  .l-sub-section
    h3 addControl

    
    pre.prettyprint
      code.
        addControl(dir: NgControl)
    
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  .l-sub-section
    h3 getControl

    
    pre.prettyprint
      code.
        getControl(dir: NgControl)
    
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  .l-sub-section
    h3 removeControl

    
    pre.prettyprint
      code.
        removeControl(dir: NgControl)
    
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  .l-sub-section
    h3 addControlGroup

    
    pre.prettyprint
      code.
        addControlGroup(dir: NgControlGroup)
    
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  .l-sub-section
    h3 removeControlGroup

    
    pre.prettyprint
      code.
        removeControlGroup(dir: NgControlGroup)
    
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  .l-sub-section
    h3 getControlGroup

    
    pre.prettyprint
      code.
        getControlGroup(dir: NgControlGroup)
    
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  .l-sub-section
    h3 updateModel

    
    pre.prettyprint
      code.
        updateModel(dir: NgControl, value: any)
    
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  .l-sub-section
    h3 onSubmit

    
    pre.prettyprint
      code.
        onSubmit()
    
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