Update array value a given index (mongoose, mongodb)

Question

In my database, I have in my schema a field: priority_data: [ String ] This is an array of priority data.

Here is an example what that field can contain : "priority_data": ["Photo","Video","Music"]

And I want to update for example only the index 2.

I try to proceed with the following code:

await Disk.findOne({_id: id})
   .then(doc => {
   doc.disk_info[1] = 'Office Document';
   doc.save()
   .then(() => {
   res.status(200).json({
  message: 'ok'
})  
})
})

But that throws me an error.

Can anyone help?

Your question statement talks about a field called priority_data that is nowhere to be found in your code snippet. Does your schema also have a field called "disk_info"? — ack_inc
– ack_inc, Commented Dec 12, 2018 at 22:32
when im doing doc.priority_data[1] = 'Office Document'; and after doc.save(); The index 1 of the array is not changed in my database — M3nBeR SuReS
– M3nBeR SuReS, Commented Dec 13, 2018 at 15:43

Sai Reddy · Accepted Answer · 2018-12-13 10:45:00Z

1

await Disk.update(
    {_id: id},
    {$set:{"priority_data.1":"Office Document"}}
)

answered Dec 13, 2018 at 10:45

Sai Reddy

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