我正在使用Ionic 4 + Anglefire + Firebase制作此应用。 package.json的详细信息在下面提供。
实际上,我在运行ionic serve
时有很多错误。但这很奇怪,因为此错误仅在我运行ionic serve
之后发生一次。 当我重新保存文件find-resto.ts(没有任何更改)时,问题消失了!!!
它开始困扰我,因为它在ionic pro和Ionic DevApp中引发错误。
以下是错误:
1. Typescript Error Type 'AngularFireList<ProfileResto>' is not assignable to type 'AngularFireList<ProfileResto[]>'. (line 29)
2. Typescript Error Type 'AngularFireList<ProfileResto>' is not assignable to type 'AngularFireList<ProfileResto[]>'. Type 'ProfileResto' is not assignable to type 'ProfileResto[]'. Property 'length' is missing in type 'ProfileResto' (line 29)
3. Typescript Error Type 'Observable<AngularFireAction<DatabaseSnapshot<ProfileResto[]>>[]>' is not assignable to type 'AngularFireList<ProfileResto[]>'. (line 30)
4. Typescript Error Type 'Observable<AngularFireAction<DatabaseSnapshot<ProfileResto[]>>[]>' is not assignable to type 'AngularFireList<ProfileResto[]>'. Property 'query' is missing in type 'Observable<AngularFireAction<DatabaseSnapshot<ProfileResto[]>>[]>'. (line 30)
5. Typescript Error Type 'AngularFireList<ProfileResto>' is not assignable to type 'AngularFireList<ProfileResto[]>'. (line 33)
6. Typescript Error Type 'Observable<AngularFireAction<DatabaseSnapshot<ProfileResto[]>>[]>' is not assignable to type 'AngularFireList<ProfileResto[]>'.
7. Typescript Error Cannot find name 'RestoProfile'. (line39)
这是我的文件 find-resto.ts
import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams, ToastController } from 'ionic-angular';
import { AngularFireAuth } from '@angular/fire/auth';
import { AngularFireDatabase, AngularFireList } from '@angular/fire/database';
import { ProfileResto } from './../../models/profile-resto';
import { OrderMenuPage } from '../order-menu/order-menu';
@IonicPage()
@Component({
selector: 'page-find-resto',
templateUrl: 'find-resto.html',
})
export class FindRestoPage {
restoProfileRef: AngularFireList<ProfileResto[]>;
restoProfileData: AngularFireList<ProfileResto[]>;
constructor(private afAuth: AngularFireAuth, private afDatabase: AngularFireDatabase,
private toast: ToastController,
public navCtrl: NavController, public navParams: NavParams) {
}
ionViewDidLoad() {
this.afAuth.authState.subscribe(data => {
if(data && data.email && data.uid){
this.restoProfileRef = this.afDatabase.list<ProfileResto>(`profile-resto/`);
this.restoProfileData = this.restoProfileRef.snapshotChanges();
}
else {
this.restoProfileRef = this.afDatabase.list<ProfileResto>(`profile-resto/`);
this.restoProfileData = this.restoProfileRef.snapshotChanges();
}
});
}
selectResto(restoProfile: RestoProfile){
this.afAuth.authState.subscribe(data => {
if(data && data.email && data.uid){
this.navCtrl.push('OrderMenuPage', {
restoDataPass: restoProfile
});
console.log(restoProfile)
}
else {
this.toast.create({
message: `Harap masuk/daftar terlebih dahulu`,
duration: 3000
}).present();
}
});
}
}
这是我的package.json文件
{
"name": "menuu",
"version": "0.0.1",
"author": "Ionic Framework",
"homepage": "http://ionicframework.com/",
"private": true,
"scripts": {
"start": "ionic-app-scripts serve",
"clean": "ionic-app-scripts clean",
"build": "ionic-app-scripts build",
"lint": "ionic-app-scripts lint"
},
"dependencies": {
"@angular/animations": "5.2.11",
"@angular/common": "5.2.11",
"@angular/compiler": "5.2.11",
"@angular/compiler-cli": "5.2.11",
"@angular/core": "5.2.11",
"@angular/fire": "^5.0.2",
"@angular/forms": "5.2.11",
"@angular/http": "5.2.11",
"@angular/platform-browser": "5.2.11",
"@angular/platform-browser-dynamic": "5.2.11",
"@ionic-native/core": "~4.15.0",
"@ionic-native/splash-screen": "~4.15.0",
"@ionic-native/status-bar": "~4.15.0",
"@ionic/pro": "2.0.3",
"@ionic/storage": "2.2.0",
"firebase": "^5.5.4",
"ionic-angular": "3.9.2",
"ionicons": "3.0.0",
"rxjs": "^6.3.3",
"rxjs-compat": "^6.3.3",
"sw-toolbox": "3.6.0",
"zone.js": "0.8.26"
},
"devDependencies": {
"@ionic/app-scripts": "3.2.0",
"typescript": "~2.6.2"
},
"description": "An Ionic project"
}
任何帮助将不胜感激。谢谢。
答案 0 :(得分:1)
只需按照错误消息查看需要更改的内容。 value
返回this.afDatabase.list(
,因此应该是profile-resto/
)profile-resto/
的类型。 (AngularFireList<ProfileResto>
将是数组的列表 。)同样,修复此问题后,您会看到restoProfileRef
的类型必须为AngularFireList<ProfileResto[]>
。关于restoProfileData
,我想你是说Observable<AngularFireAction<DatabaseSnapshot<ProfileResto>>[]>
?
关于消失的错误,我已经在Stack Overflow上看到了一些有关该错误的报告,但是我不十分了解所涉及的系统,因此我不值得去研究这种现象。