Node + Mongodb. $pull not working? - node.js

Question

I am using Node.js and MongoDB and I'm trying to setup a DELETE route. In the function responsible for handling the delete I am using Mongo's "$pull" operator. I've looked at a couple of examples now and I don't know what I am doing wrong.
Here's a sample of how the database documents are setup
{
"_id": {
"$oid": "123abc"
},
"sleepData": [
{
"date": "03/28/2016",
"hour": "11",
"minute": "11",
"meridiem": "PM",
"feeling": "7"
},
{
"date": "03/29/2016",
"hour": "3",
"minute": "41",
"meridiem": "PM",
"feeling": "1"
},
{
"date": "03/30/2016",
"hour": "1",
"minute": "29",
"meridiem": "AM",
"feeling": "5"
},
{
"date": "03/30/2016",
"hour": "1",
"minute": "38",
"meridiem": "AM",
"feeling": "4"
},
]
}
*Note the near-duplicate data, thus the reason why my $pull query is so specific.
Here is my function for the route
module.exports.DELETE = function(req, res) {
var sleepDataToDelete = {
date: req.query.date,
hour: req.query.hour,
minute: req.query.minute,
meridiem: req.query.meridiem,
feeling: req.query.feeling
};
// next code block is what this console prints out
console.log("Deleting req.query:\n", sleepDataToDelete);
var sleepObjectId = req.query.sleepObjectId;
var sleepDataCollection = db.get().collection('sleepData');
sleepDataCollection.update(
{
_id: sleepObjectId
},
{
$pull: {
sleepData: {
date: sleepDataToDelete.date,
hour: sleepDataToDelete.hour,
minute: sleepDataToDelete.minute,
meridiem: sleepDataToDelete.meridiem,
feeling: sleepDataToDelete.feeling
}
}
},
function(err, result) {
if(err) {
console.log("err", err);
return res.status(400).end();
} else {
console.log("Count: ", result.result.n);
console.log("Deleted! :) ");
return res.status(200).end();
}
}
);
};
This is what the console.log("Deleting req.query:\n", sleepDataToDelete); prints out, which also matches the third index in the sleepData array.
Deleting req.query:
{
date: '03/30/2016',
hour: '1',
minute: '29',
meridiem: 'AM',
feeling: '5'
}
I have even tried putting the json field names in double/single quotes, but that didn't work either. The number of objects modified is 0. I have also tried reducing the "$pull {...}" query to just "date" instead of having "date", "hour", "minute", "meridiem", and "feeling." This still results in 0 modified items from the print statement.

Answer 1

As #BlakesSeven pointed out, I was not passing in an ObjectId in my query. So, credit goes to him. Needless to say, this solved my issue.