javascript - typescript 类不接受参数类型

Question

我正在 Angular 中为数据模型创建新类。

我已经在新文件中创建类并在构造函数中初始化它们

export class CreditPoliciesDetails { 
    private _fileName : string ="" ;
    private _fileDate : string ="" ;
    private _fileSize : string ="" ;
    private _path : string=""; 
    private _extention: string="";
    constructor() {
        this._fileDate="fileDate";
        this._fileName="fileName";
        this._fileSize="fileSize";
        this._path="path";
        this._extention="extension";
    }
}  

export class CreditPolicies {
    private _document : CreditPoliciesDetails[];
    private _directory: string
    constructor (details: CreditPoliciesDetails[]) {
        this._document = details;
        this._directory="";
    }
    get category() {
        return this._document
    }
    public details (detail) {
        console.log(detail)

        this._document= detail;
    }
}

然后在我的组件 ts 文件 中声明新的 CreditPoliciesDetails数组然后将其传递给 files这是 CreditPolicies 类型的数组

  details :CreditPoliciesDetails[] = new Array <CreditPoliciesDetails>(); 

  files : CreditPolicies[] = new Array <CreditPolicies>(this.details);

在 VS 代码中，当我悬停 new Array <CreditPolicies>(this.details); 的参数时，我收到警告Argument of type 'CreditPoliciesDetails[]' is not assignable to parameter of type 'CreditPolicies'.
Property '_document' is missing in type 'CreditPoliciesDetails[]'.

当我 console.log files和 details我得到空数组。

我期待这种格式

[  
   {  
      "directory":"string",
      "document":[{  
         "extension":"string",
         "lastModifiedDate":"string",
         "name":"string",
         "path":"string",
         "size":"0"
      }]
   }
]

Answer 1

您必须调用构造函数，而不是将 CreditPoliciesDetails 数组转换为 CreditPolicies 数组

details :CreditPoliciesDetails[] = new Array <CreditPoliciesDetails>(); 

//files : CreditPolicies[] = new Array <CreditPolicies>(this.details);

files : CreditPolicies = new CreditPolicies(this.details);