Question

版本信息

Angular： 6.0.4

Firebase： 5.0.3

AngularFire： 5.0.0-rc.10

ng-test-angular6@0.0.0 /home/amine/docker-projects/ng-test-angular6
├── @angular-devkit/build-angular@0.6.8
├── @angular/animations@6.0.4
├── @angular/cli@6.0.8
├── @angular/common@6.0.4
├── @angular/compiler@6.0.4
├── @angular/compiler-cli@6.0.4
├── @angular/core@6.0.4
├── @angular/forms@6.0.4
├── @angular/http@6.0.4
├── @angular/language-service@6.0.4
├── @angular/platform-browser@6.0.4
├── @angular/platform-browser-dynamic@6.0.4
├── @angular/router@6.0.4
├── @types/jasmine@2.8.8
├── @types/jasminewd2@2.0.3
├── @types/node@8.9.5
├── angularfire2@5.0.0-rc.10
├── codelyzer@4.2.1
├── core-js@2.5.7
├── firebase@5.0.3
├── jasmine-core@2.99.1
├── jasmine-spec-reporter@4.2.1
├── karma@2.0.2
├── karma-chrome-launcher@2.2.0
├── karma-coverage-istanbul-reporter@2.0.1
├── karma-jasmine@1.1.2
├── karma-jasmine-html-reporter@0.2.2
├── protractor@5.3.2
├── rxjs@6.2.0
├── ts-node@5.0.1
├── tslint@5.9.1
├── typescript@2.7.2
└── zone.js@0.8.26

如何重现这些条件

查看the angular project ng-angular6-angularfire5.0.0-rc.10

只需克隆，安装和投放。

调试输出

问题来自该行L20

中的功能

  fetchAvailableExercices() {
    this.db.collection('availablesExercices')
    .snapshotChanges()
    .pipe(map( docArray => {
      return docArray.map( doc => {
        console.log(doc);
        return(
           {
           id: doc.payload.doc.id,
           name: doc.payload.doc.data().name,
           duration: doc.payload.doc.data().duration,
           calories: doc.payload.doc.data().calories,
         }
        //doc
      );
      });
    }))
    .subscribe(exercices => {
      this.availableExercices = exercices;
      this.availableExercicesChanged.next([...this.availableExercices]);
    });
  }

我得到的错误是：

Property 'name' does not exist on type '{}'.
Property 'duration' does not exist on type '{}'.
Property 'calories' does not exist on type '{}'.

此外，我无法构建角度应用程序ng build --prod

的prod版本

但是，如果我按原样获取文档（没有设置名称，持续时间，卡路里），我可以获得浏览器控制台获得的预期值：

> temp1.payload.doc.data()
{calories: 8, duration: 60, name: "Burpees"}


  fetchAvailableExercices() {
    this.db.collection('availablesExercices')
    .snapshotChanges()
    .pipe(map( docArray => {
      return docArray.map( doc => {
        console.log(doc);
        return(
        doc
      );
      });
    }))
    .subscribe(exercices => {
      this.availableExercices = exercices;
      this.availableExercicesChanged.next([...this.availableExercices]);
    });
  }

预期行为

以下错误Property 'name' does not exist on type '{}'.必须消失。
建立一个产品必须成功

PS： AngularFire：5.0.0-rc.8 不会抛出错误消息Property 'name' does not exist on type '{}'.。然而，它无法构建角度应用程序的产品版本。

ng build --prod

Date: 2018-06-10T20:10:08.203Z
Hash: 3395c915a85b5198ef71
Time: 4427ms
chunk {0} runtime.a66f828dca56eeb90e02.js (runtime) 1.05 kB [entry] [rendered]
chunk {1} styles.d651e93934b267387a12.css (styles) 56.5 kB [initial] [rendered]
chunk {2} polyfills.cdf87a8e5b31fe8a11f1.js (polyfills) 130 bytes [initial] [rendered]
chunk {3} main.a2bc6cab25d0aa41c17a.js (main) 128 bytes [initial] [rendered]

ERROR in Error during template compile of 'AppModule'
  Function calls are not supported in decorators but 'AngularFireModule' was called.

Answer 1

我对angularfire2＆amp;的版本有一些问题。你项目中的firebase。

这就是我做的事情：

npm i angularfire2@5.0.0-rc.10 --save
npm i firebase@5.0.4 --save

在data.service.ts中：输入db.collection()来电

 fetchAvailableExercices() {
    this.db.collection<IExercice>('availablesExercices') //  <== This line
    .snapshotChanges()
    .pipe(map( docArray => {
      return docArray.map( doc => {
        console.log(doc);
        return(
          {
          id: doc.payload.doc.id,
          name: doc.payload.doc.data().name,
          duration: doc.payload.doc.data().duration,
          calories: doc.payload.doc.data().calories,
        }
      );
      });
    }))
    .subscribe(exercices => {
      this.availableExercices = exercices;
      this.availableExercicesChanged.next([...this.availableExercices]);
    });
  }

app.module中的另外两条评论：

您应该导入AngularFirestoreModule（已注释掉）
无需在此提供AngularFireStore

财产错误消失了＆amp;构建正在发挥作用 Working example here

Answer 2

使用新版本的AngularFire，代码将变为：

  fetchAvailableExercices() {
    this.db.collection('availablesExercices')
    .snapshotChanges()
    .pipe(map( docArray => {
      return docArray.map( doc => {
        console.log(doc);
        return(
           {
           id: doc.payload.doc.id,
           name: doc.payload.doc.data()['name'],
           duration: doc.payload.doc.data()['duration'],
           calories: doc.payload.doc.data()['calories'],
         }
        //doc
      );
      });
    }))
    .subscribe(exercices => {
      this.availableExercices = exercices;
      this.availableExercicesChanged.next([...this.availableExercices]);
    });
  }

构建产品应用程序将很简单。

angularfire2@5.0.0-rc.10 .snapshotChanges（）无法让你获得doc.payload.doc.data（）

版本信息

如何重现这些条件

调试输出

预期行为

2 个答案: