how to parse Json object like an array in typescript . MAP inside MAP firestore

Question

I want to parse driverDocumentDetails like an Array.

JSON is implemented from android (Java) HashMap data structure Angular Firestore MAP inside MAP

{ 
   "driverDocumentDetails":{ 
      "fhgfh":{ 
         "documentCategoryID":"fhgfh",
         "documentCategoryName":"Pan Card",
         "documentUploadedDateTime":null,
         "reasonForRejection":null,
         "uploaded":false,
         "uploadedDocumentURL":null,
         "verified":false
      },
      "bjhbh":{ 
         "documentCategoryID":"bjhbh",
         "documentCategoryName":"Driving License",
         "documentUploadedDateTime":null,
         "reasonForRejection":null,
         "uploaded":false,
         "uploadedDocumentURL":null,
         "verified":false
      },
      "hgvjh":{ 
         "documentCategoryID":"hgvjh",
         "documentCategoryName":"NOC",
         "documentUploadedDateTime":null,
         "reasonForRejection":null,
         "uploaded":false,
         "uploadedDocumentURL":null,
         "verified":false
      }
   },
   "driverID":"bhbjhbjhbj",
   "hgchg":[ 
      { 
         "bjnk":"jhbjhb",
         "fhfyhgf":"jjb"
      },
      { 
         "gfhg":"jgjuy",
         "gh":"guguj"
      }
   ]
}

onCustom(recordRow) {
    console.log("onCustom Driver docs data---->",recordRow);
    this.crudService.ReadDriverDocuments(recordRow.data.id).subscribe(data => {

    this.driverDocument = data.data();
    console.log('ReadDriverDocuments',this.driverDocument);
    });
  }

Why your question contains unwanted commented code? Post it as a try:) — Prashant Pimpale
– Prashant Pimpale, Commented Oct 22, 2019 at 13:49
What is the output of console.log('ReadDriverDocuments',this.driverDocument);? — Prashant Pimpale
– Prashant Pimpale, Commented Oct 22, 2019 at 13:50

Mathew Berg · Accepted Answer · 2019-10-22 14:28:58Z

2

You can use Object.keys to get the keys and then map it into a new array:

var driverDocumentDetailsArray = Object.keys(this.driverDocument.driverDocumentDetails)
    .map(key => this.driverDocument.driverDocumentDetails[key]);

Or if it's available, just Object.values

var driverDocumentDetailsArray = Object.values(this.driverDocument.driverDocumentDetails);

answered Oct 22, 2019 at 14:28

Mathew Berg

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