Typescript 如何按父对象的子对象id筛选父对象?

Typescript 如何按父对象的子对象id筛选父对象?,typescript,angular7,ecmascript-5,ngrx-store,Typescript,Angular7,Ecmascript 5,Ngrx Store,我得到的后端响应如下: { "ReturnModel": { "Id": 20, "Name": "tserror.JPG,typeIssue.JPG", "Description": "testing", "SubjectId": 100001, "SubjectTypeId": 100001, "SubjectLevelId": 100001, "SubjectOptionId": 100001, "LanguageId":

我得到的后端响应如下:

{
  "ReturnModel": {
    "Id": 20,
    "Name": "tserror.JPG,typeIssue.JPG",
    "Description": "testing",
    "SubjectId": 100001,
    "SubjectTypeId": 100001,
    "SubjectLevelId": 100001,
    "SubjectOptionId": 100001,
    "LanguageId": 100001,
    "BlobFileUpload": [
      {
        "FileId": 27,
        "FileName": "tserror_20190410110826.JPG",
        "FileDescription": "Upload",
        "CourseId": 20,
        "CourseFileUpload": null
      },
      {
        "FileId": 28,
        "FileName": "typeIssue_20190410110826.JPG",
        "FileDescription": "Upload",
        "CourseId": 20,
        "CourseFileUpload": null
      }
    ]
  }
}
根据上面的json值,我需要从父对象的BlobFileUpload-FileId中筛选父对象。为此,我尝试了以下方法,但没有效果。有人给我建议正确的方法吗

case fileActions.RemoveFileSuccess.TYPE :

            const fileId = (<fileActions.RemoveFileSuccess>action).payload.Id;

            return {
                ...state,
                uploadedFiles : state.uploadedFiles.filter(file => file.BlobFileUpload.filter(blob => blob.FileId !== fileId))
            }
我想您需要的是state.uploadedFiles.filterfile=>file.BlobFileUpload.someblob=>blob.FileId!==文件ID

检查数组中的任何项对于提供的谓词是否真实,并返回布尔值

需要一个返回布尔值的谓词,但筛选器本身返回一个数组,且数组始终为真。这就是为什么它没有为你过滤