angular 个模型中的对象 Declaration/Relationship

Question

是否可以做这样的事情我想在我的模型中声明一个对象，我尝试的第一个是

export class Employee{
    emp_id: number;
    emp_fname: string;
    emp_lname: string;
    emp_birth: string;
    emp_status: string;
    emp_photo: string;
    emp_department: string; 
    department: Array<object> = 
    [{
        dept_id: number;
        dept_name: string;
    }];

第二个是这样的

import { Department } from "./department.model";

export class Employee{
  constructor(department: Department){};
    emp_id: number;
    emp_fname: string;
    emp_lname: string;
    emp_birth: string;
    emp_status: string;
    emp_photo: string;
    emp_department: string; 
    department: department;

}

我的终端出现 return 个错误：第一个 returns 期望，但是当我做到时，它说我应该使用 eg:number 作为类型而不是值。

然后第二个return出错

找不到名称 'department'。

我的部门模型

export class Department {
    dept_id: number;
    dept_name: string;
}

Answer 1

export class Department {
    dept_id: number;
    dept_name: string;
    constructor(dept_id, dept_name){
        this.dept_id = dept_id;
        this.dept_name = dept_name;
    }
}

export class Employee{
    emp_id: number;
    emp_fname: string;
    emp_lname: string;
    emp_birth: string;
    emp_status: string;
    emp_photo: string;
    emp_department: string; 
    department: Department[] = [new Department(1, "dept_name1"), new Department(2, "dept_name2")];
}

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