firebase realtime database to update an entry after filter on list

[Vik]

The data in the realtime db is structure like below:

"orders" : {
    "-LM5p4tl7Og_PMJOspZ-" : {
      "customer" : {
        "_name" : "Vik Kumar",
        "_uid" : "oSEYj0zrkhPCk9r7uwyOOkHcqe53"
      },
      "order" : {
        "_orderNumber" : "VikKumar-26954",
        "_orderStatus" : "Pending",
        "_orderTotal" : 500,
      }
    },
    "-LM5s1wRCvqWA1vsZONy" : {
      "customer" : {
        "_name" : "Vik Kumar",
        "_uid" : "oSEYj0zrkhPCk9r7uwyOOkHcqe53"
      },
      "order" : {
        "_orderNumber" : "VikKumar-11423",
        "_orderStatus" : "Pending",
        "_orderTotal" : 500,
      }
    },
    "-LM5sOHzjLeqFGFleMxq" : {
      "customer" : {
        "_name" : "Vik Kumar",
        "_uid" : "oSEYj0zrkhPCk9r7uwyOOkHcqe53"
      },
      "order" : {
        "_orderNumber" : "VikKumar-63772",
        "_orderStatus" : "Pending",
        "_orderTotal" : 500,
      }
    }
}

I am using angularfire2 in my ionic app and filtering few orders as below:

getPendingOrders(dateStr:string){
    return new Promise((resolve, reject) =>
      {
        this.db.list('orders',
                     ref =>  ref.orderByChild("order/_date").equalTo(dateStr)
       ).valueChanges().subscribe(
        res => {
          resolve(res)
        },
        err => {
          console.log(err)
          reject(err)
        }
      )
      })
  }

The above query gives me the response as below

[{"customer": {}, "order": {}}, {"customer": {}, "order": {}}]

I can render it in UI just fine and i want the end user to be able to update the value of property "_orderStatus". The trouble is the way i queried the data i have lost the keys to identify a particular object to update it. Please advise

Thankx and Regards

Vik
Photographer
http://www.viksphotography.com

[Kiana McNellis]

Try this doc: https://github.com/angular/angularfire2/blob/91ec37eed9c33ed5bd084ebb016a4bb70916bf3f/docs/rtdb/objects.md#retrieving-the-snapshot

Looks like you can use res.key

-Kiana

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