SJSJ | Simplified JavaScript Jargon | Translation library

api.service.ts

So the problem was the node I was targeting. Removed "child("users")" form fetching function and targeted the whole users node with uids. Then I was looping the snapshot.value while I casted it in [String:[String:Any]], because each snapshot.valuelooked like this (key: "vijwUkzAlbgcqjAammfy0JuVMB33", value: ["name": Silviu, "email": Office@isidors.com]) Finally, I updated the HomeDataShource Class like this:

Yii has a helper class Json it contains a method Json::decode use it to decode the json string.

Dont forget to add namespace use yii\helpers\Json;

You could go with not declaring mainDetails from the beginning, doing something like:

I've tried your code. Seems to be working as intended. It would seem that your problem lies with the data itself. Have you checked your logic for storing data? If there are duplicates in your data, naturally, duplicates will be retrieved.

Edit: I think there was a misunderstanding with the storing data part question. It's not how you store in the database I was asking, its how you were persisting the data. How do you persist your data or how the persistent data was stored? Was there any fetch logic before you arrived in this:

var mainDetails = kesc.tj_xhqd <--- This guy

The part where I tested your code:

Is this what you are trying to achieve?

Your description of your problem sounds like the Linq query you are executing is not returning any results, so your call to FirstOrDefault is defaulting, which is to say it is returning null. You then perform no additional validations, and respond with the result of this line set as the value of an anonymous projection having a data property.

The First() extension method will throw an exception when the source sequence is empty. In this case, it looks like your LINQ expression with that where clause is not returning a valid collection, hence you are getting this error.

You should use FirstOrDefault() and check whether it is null or not before proceeding.

Here's a simple way to check the time difference in minutes.