Deleting a document in Mongo with the use of an object as a value

Question

Deleting a document in Mongo with the use of an object as a value

Hello, I'm struggling with deleting a document from my MongoDb using an object.

Let me explain:

const removeDocument = function (db, callback) {
  // Access the collection of documents
  const collection = db.collection(documentName)
  // Delete the specified document
  console.log(trimNameToDelete)
  collection.deleteOne({Video_trim: trimNameToDelete}, function (err, result) {
    assert.equal(err, null)
    assert.equal(1, result.result.n)
    console.log('Document removed')
    callback(result)
  })
  fs.unlink('./public/videos/cut-videos/' + documentName + '/' + trimNameToDelete.trimName + '.mp4', (err) => {
    if (err) {
      console.log('Failed to delete local image: ' + err)
    } else {
      console.log('Local image successfully deleted')
    }
  })
}

Where the value of trimNameToDelete is:

{"trimName":"cut2","startTime":"00:00:05","endTime":"00:00:15"}

and the document in MongoDb looks like this in the shell:

{ "_id" : ObjectId("5abe67897a9b9e0933c64acd"), "Video_trim" : { "trimName" : "cut2", "startTime" : "00:00:05", "endTime" : "00:00:15" } }

The error message I'm receiving is:

AssertionError [ERR_ASSERTION]: 1 == 0

Due to technical limitations, the Id cannot be used for deleting.

javascript mongodb

Answer 1

Answer №1

I have identified the issue – I needed to properly parse the trimNameToDelete. It was a silly mistake on my part as I was passing it as a string.

const deleteTrimByName = function (db, callback) {
  // Access the collection of documents
  const collection = db.collection(documentName)

  console.log('>>>>>' + trimNameToDelete)
  collection.deleteOne({Video_trim: JSON.parse(trimNameToDelete)}, function (err, result) {
    assert.equal(err, null)
    assert.equal(1, result.result.n)
    console.log('Document removed successfully')
    callback(result)
  })
  fs.unlink('./public/videos/cut-videos/' + documentName + '/' + JSON.parse(trimNameToDelete).trimName + '.mp4', (err) => {
    if (err) {
      console.log('failed to delete local image:' + err)
    } else {
      console.log('successfully deleted local image')
    }
  })
}

Answer 2

I have identified the issue – I needed to properly parse the trimNameToDelete. It was a silly mistake on my part as I was passing it as a string.

const deleteTrimByName = function (db, callback) {
  // Access the collection of documents
  const collection = db.collection(documentName)

  console.log('>>>>>' + trimNameToDelete)
  collection.deleteOne({Video_trim: JSON.parse(trimNameToDelete)}, function (err, result) {
    assert.equal(err, null)
    assert.equal(1, result.result.n)
    console.log('Document removed successfully')
    callback(result)
  })
  fs.unlink('./public/videos/cut-videos/' + documentName + '/' + JSON.parse(trimNameToDelete).trimName + '.mp4', (err) => {
    if (err) {
      console.log('failed to delete local image:' + err)
    } else {
      console.log('successfully deleted local image')
    }
  })
}

Deleting a document in Mongo with the use of an object as a value

Answer №1

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