[英]Undefined is not an object (evaluating 'type.parameters')
我正在按照本教程進行操作: https : //javebratt.com/angularfire2-email-auth/ ,但出現一個奇怪的錯誤。
我正在執行登錄頁面,並且已經實現了這兩個文件
登錄名
import {
NavController,
LoadingController,
AlertController
} from 'ionic-angular';
import { Component } from '@angular/core';
import { FormBuilder, Validators } from '@angular/forms';
import { AuthData } from '../../providers/auth-data';
import { Page1 } from '../../pages/page1/page1';
import { SignupPage } from '../../pages/signup/signup';
import { ResetPasswordPage } from '../../pages/reset-password/reset-password';
import { EmailValidator } from '../../validators/email';
/*
Generated class for the Login page.
See http://ionicframework.com/docs/v2/components/#navigation for more info on
Ionic pages and navigation.
*/
@Component({
selector: 'page-login',
templateUrl: 'login.html'
})
export class LoginPage {
public loginForm: any;
emailChanged: boolean = false;
passwordChanged: boolean = false;
submitAttempt: boolean = false;
public loading: any;
constructor(public nav: NavController, public authData: AuthData,
public formBuilder: FormBuilder, public alertCtrl: AlertController,
public loadingCtrl: LoadingController) {
this.loginForm = formBuilder.group({
email: ['', Validators.compose([Validators.required,
EmailValidator.isValid])],
password: ['', Validators.compose([Validators.minLength(6),
Validators.required])]
});
}
goToResetPassword(){
this.nav.push(ResetPasswordPage);
}
createAccount(){
this.nav.push(SignupPage);
}
ionViewDidLoad() {
console.log('Hello LoginPage Page');
}
elementChanged(input){
let field = input.inputControl.name;
this[field + "Changed"] = true;
}
loginUser(){
this.submitAttempt = true;
if (!this.loginForm.valid){
console.log(this.loginForm.value);
} else {
this.authData.loginUser(this.loginForm.value.email,
this.loginForm.value.password).then( authData => {
this.nav.setRoot(Page1);
}, error => {
this.loading.dismiss().then( () => {
let alert = this.alertCtrl.create({
message: error.message,
buttons: [
{
text: "Ok",
role: 'cancel'
}
]
});
alert.present();
});
});
this.loading = this.loadingCtrl.create({
dismissOnPageChange: true,
});
this.loading.present();
}
}
}
和auth-data.ts
import { Injectable } from '@angular/core';
import 'rxjs/add/operator/map';
import { AngularFire } from 'angularfire2';
@Injectable()
export class AuthData {
fireAuth: any;
constructor(public af:AngularFire) {
console.log('Hello AuthData Provider');
af.auth.subscribe(user => {
if(user){
this.fireAuth = user.auth;
console.log(user);
}
})
}
loginUser(newEmail: string, newPassword: string): any {
return this.af.auth.login({ email: newEmail, password: newPassword });
}
resetPassword(email: string): any {
return firebase.auth().sendPasswordResetEmail(email);
}
logoutUser(): any {
return this.af.auth.logout();
}
signupUser(newEmail: string, newPassword: string): any {
return this.af.auth.createUser({ email: newEmail, password: newPassword });
}
}
但是當我做“離子服務”時,我通過login.ts得到了以下奇怪的錯誤
類型“ AuthData”上不存在屬性“ loginUser”
這個loginUser函數位於我的auth-data.ts中,所以我不明白它的含義。
我的猜測是永遠不會啟動“ this.authData”,但是即使我在構造函數中添加this.authData = authData
,它也不會改變任何東西。 (這也說明我不明白它是如何啟動的)
有誰知道為什么我得到這個loginUser錯誤?
非常感謝
編輯:
感謝您在下面提供的一項建議,該錯誤似乎已經消失,並且這里出現了一個新錯誤(即使現在說實話,即使我還原更改,但仍然收到新錯誤,我都很困惑)
現在我在Safari中遇到的錯誤是TypeError:undefined不是一個對象(正在評估'type.parameters'),而在Firefox中:TypeError:type是undefined [En savoir plus]
Firefox控制台給了我
ReflectionCapabilitieshttp:// localhost:8100 / build / main.js:45824:1 Reflectorhttp:// localhost:8100 / build / main.js:45964:16 CompileMetadataResolverhttp:// localhost:8100 / build / main.js:25506: 38 CompileMetadataResolverhttp:// localhost:8100 / build / main.js:25471:21 CompileMetadataResolverhttp:// localhost:8100 / build / main.js:25357:51映射自托管的CompileMetadataResolverhttp:// localhost:8100 / build / main .js:25356:65 RuntimeCompilerhttp:// localhost:8100 / build / main.js:40363:24 RuntimeCompilercompileModuleAndComponents http:// localhost:8100 / build / main.js:40301:32 RuntimeCompilerhttp:// localhost:8100 / build /main.js:40292:16 PlatformRefbootstrapModuleWithZone http:// localhost:8100 / build / main.js:27765:16 PlatformRefhttp:// localhost:8100 / build / main.js:27747:16 http:// localhost:8100 /build/main.js:96568:1 webpack_require http:// localhost:8100 / build / main.js:20:12 http:// localhost:8100 / build / main.js:66:18
我很困惑,必須錯誤地啟動某些內容,但錯誤堆棧並不能真正幫助您...
this.authData.loginUser(this.loginForm.value.email,
this.loginForm.value.password)
在這里您不正確地訪問表單參數。 loginUser函數需要2個字符串參數。
嘗試:
this.loginForm.controls["email"].value
this.loginForm.controls["password"].value
編輯:對於第二個錯誤,我猜這是問題所在:
resetPassword(email: string): any {
return firebase.auth().sendPasswordResetEmail(email);
}
我看不到文件中任何地方設置的firebase對象。
我的猜測是永遠不會啟動“ this.authData”,但是即使我在構造函數中添加this.authData = authData,它也不會改變任何東西。 (這也說明我不明白它是如何啟動的)
您不需要這樣做,因為角度噴射器負責提供程序的初始化。 您可以在此處了解更多信息
關於您的問題,您是否按照教程中所述在應用程序根模塊中導入並注冊了提供程序?
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