angular - angular2 dynamic validate message doesn't work after upgrade to final -


i custom dynamic validate message form in angular2.rc4 (validate form without defining error messages @ each input)

changepass.ts

@component({     selector: '[change-password]',     template: `<form [ngformmodel]="passwordform" id="passwordform" (ngsubmit)="changepassword()">         <div class="row">             <div class="input-field col s12">                 <input type="password" class="form-control" id="oldpassword" ngcontrol="oldpassword" [(ngmodel)]="model.oldpassword">                 <label for="oldpassword">current password</label>                 <control-messages control="oldpassword"></control-messages>             </div>         </div>     </form>`,     directives: [controlmessages], }) export class changepasswordcomponent {     formbuilder;      constructor(myelement:elementref, formbuilder:formbuilder) {         this.formbuilder = formbuilder;         this.passwordform = this.formbuilder.group({             oldpassword: ['', validators.required]         });     } }

controlmessages.ts

import {component, host} '@angular/core'; import {ngformmodel} '@angular/common'; @component({     selector: 'control-messages',     inputs: ['controlname: control'],     template: `<div *ngif="errormessage !== null">{{errormessage}}</div>` }) export class controlmessages {     controlname:string;      constructor(@host() private _formdir:ngformmodel) {         this.helper = helper;     }      errormessage() {         let formcontrols = this._formdir.form;         let control = formcontrols.find(this.controlname);          if (control) {             //do         }         return null;     } }

when upgrade angular2 final.
changed [ngformmodel] [formgroup], ngcontrol formcontrolname. , in controlmessages component can not formcontrols find control controlname.
how can it?

as per angular 2 final release can not use directives inside @component decorator.add controlmessagescomponent module declaration , use below controlmessages directive :

import { component, host, input } '@angular/core'; import { formgroupdirective } '@angular/forms';  @component({   selector: 'control-messages',   template: `<div class="form-error" *ngif="errormessage !== null">{{errormessage}}</div>` }) export class controlmessagescomponent {   @input() public controlname: string;    constructor(@host() private _formdir: formgroupdirective) {   }    errormessage() {     // find control in host (parent) form     let allcontrols = this._formdir.form.controls;      let c = allcontrols.hasownproperty(this.controlname) ? allcontrols[this.controlname] : null;     if (c !== null) {       //do     }     return null;   } }

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