Storing time using default in mongoose schema , saves the same time again and again

Question

I have a mongoose schema which includes:

dateTime: {
    type: Date,
    default: moment().tz("Asia/Karachi").format(),
},

But when I am saving records in MongoDB its storing the same time again and again.

Record One saved: enter image description here

Record Two saved:

enter image description here

Answer 1

By specifing a default value this exact value will be used for all the records. You probably want to define a default function instead:

dateTime: {
    type: Date,
    default: () => moment().tz("Asia/Karachi").format()
},