Angular 5：在模型之间检测到循环依赖

Question

我被这个错误困扰了几天，我不知道如何解决它。

我的应用程序中有 2 个模型：User 和 Team。

user.ts :

import { Team } from './team';

export class User {

id: string = null;
name: string = null;
email: string = null;
settings: any = {};

team: Team = null;

constructor(json?: Object){
    var defaultSettings = {};

    if(json){
        this.id = json['id'] || null;
        this.name = json['name'] || null;
        this.email = json['email'] || null;
        this.settings = json['settings'] || {};

        this.team = new Team(json['team']) || null;
    }
}

getSettings(){
    return  Object.assign(this.team.settings, this.settings);
}

team.ts

import { User } from './user';

export class Team {

id: string = null;
name: string = null;
settings: any = {};

users: User[] = [];

constructor(json?: any){
    if(json){
        this.id = json['id'] || null;
        this.name = json['name'] || null;
        this.settings = json['settings'] || {};

        if(json['users']) json['users'].forEach(user => this.users.push(new User(user)));
    }
}

}

当用户登录后，我得到了他在团队中的信息。像那样，我可以直接从用户那里执行 user.getSettings()，并获得这些设置和团队的合并数组。

另一方面，当我展示一个团队时，它可以有一些用户。

但是，我收到了警告：

WARNING in Circular dependency detected: src/app/_models/user.ts -> src/app/_models/team.ts -> src/app/_models/user.ts

是否可以保持这个逻辑并避免循环依赖警告？

非常感谢！

Answer 1

Is it possible to keep this logic and avoid the Circular dependency warning?

通过将此添加到您的 angular-cli。json 您可以摆脱警告。

    "defaults": {

    "build": {

        "showCircularDependencies": false 
    }
  }

Answer 2

几天后，我终于创建了第三个模型 "LoggedUser"，它扩展了我的 "User" 模型，与 "team: Team" 属性 :

user.ts :

export class User {

    id: string = null;
    name: string = null;
    email: string = null;
    settings: any = {};

    constructor(json?: Object){
        var defaultSettings = {};

        if(json){
            this.id = json['id'] || null;
            this.name = json['name'] || null;
            this.email = json['email'] || null;
            this.settings = json['settings'] || {};
        }
    }
}

team.ts :

import { User } from './user';

export class Team {

    id: string = null;
    name: string = null;
    settings: any = {};

    users: User[] = [];

    constructor(json?: any){
        if(json){
            this.id = json['id'] || null;
            this.name = json['name'] || null;
            this.settings = json['settings'] || {};

            if(json['users']) json['users'].forEach(user => this.users.push(new User(user)));
        }
    }
}

loggedUser.ts :

import { User } from './user';
import { Team } from './team';

export class LoggedUser extends User {

    team: Team = null;

    constructor(json?: Object) {
        super(json);

        this.team = new Team(json['team']) || null;
    }    

    getSettings(){
        return  Object.assign(this.team.settings, this.settings);
    }
}

Angular 5：在模型之间检测到循环依赖

Angular 5: Circular dependency detected between models

warnings

model

circular-dependency

angular