How to assign a 'get' function to a variable in a model. Typescript-CodePudding

code below:

export class User {

constructor(

  public Id: number,
  public Prefix: string,
  public FirstName: string,
  public LastName: string,
  public MiddleInitial: string,
  public FullName: string = function() {
    return FirstName   ' '   LastName;
  },
){ }
}

The fullname variable is throwing an error, any help/other approaches would be appreciated.

CodePudding user response：

You state that FullName should expect string, but you try to assign function to it. As you want to assign to FullName value that will be a composition of two constructor params, you have to declare FullName as a User class field, and assign value to it in constructor body:

class User {
  public FullName: string;
  
  constructor(
    public Id: number,
    public Prefix: string,
    public FirstName: string,
    public LastName: string,
    public MiddleInitial: string,
  ) { 
    this.FullName = FirstName   ' '   LastName;
  }
}

CodePudding user response：

It sounds like you just want a property getter on your class.

Something like:

class User {
    constructor(
        public FirstName: string,
        public LastName: string,
    ){}

    get FullName(): string {
        return this.FirstName   ' '   this.LastName;
    }
}

console.log(new User('A', 'B').FullName) // 'A B'

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