How to split date from datetime in mongodb? - node.js

Question

I have write below the code.I try to split date and time but I can't get correct solution. I write the service in Node JS. If i try get date between dates, It is working. But if i try to fetch exact date, it is not working.
exports.screenLog = function(req,res){
console.log(req.query);
Timesheet.find({userId: req.params.id,startTime: $match:{$gte : new Date(req.query.startTime),$lte: new Date(req.query.endTime)}}, function (err, timesheet) {
console.log(timesheet);
var timesheetIdArray = timesheet.map(function(ele){return ele._id});
Screenshot.find()
.where('timesheetId')
.in(timesheetIdArray)
.exec(function(err,data){
//console.log('ScreenData:',data);
if(err) {
res.send(err);
}
res.send(data);
});
});
This is My input format below:
[
{
"_id": "5963653e6b43611240189ea2",
"timesheetId": "595f4f2ec456a422bc291169",
"imageUrl": "/images/2017-07-10_05_00_06_PM.jpg",
"__v": 0,
"createdTime": "2017-07-07T09:06:54.000Z"
},
{
"_id": "5964bef37302792b0864009e",
"timesheetId": "595f4f2ec456a422bc291169",
"imageUrl": "/images/2017-07-11_05_35_07_PM.jpg",
"__v": 0,
"createdTime": "2017-07-11T12:05:07.687Z"
},
{
"_id": "5964bf897302792b086400ad",
"timesheetId": "595f4f2ec456a422bc291169",
"imageUrl": "/images/2017-07-11_05_37_37_PM.jpg",
"__v": 0,
"createdTime": "2017-07-11T12:07:37.446Z"
},
{
"_id": "5964ddf0ee77e90288d26eec",
"timesheetId": "5964ddf0ee77e90288d26eeb",
"imageUrl": "/images/2017-07-11_07_47_20_PM.jpg",
"__v": 0,
"createdTime": "2017-07-11T14:17:20.651Z"
}]

Answer 1

Date and Time Can't be Split in MongoDB.They are Store in Date object in database.
But You can Compare the dates By $gte,$lte,$eq etc.
For the Comparisons you can Only Compare with UTC date ,For this You can find out moment Library
eg : date:{ $gte : moment(YOUR_DATE_IN_STRING) }

Answer 2

I am not too familiar with Node.Js, but I think the project aggregation may help you out here:
db.MyCollection.aggregate(
[
{
$project:
{
year: { $year: "$MyDateField" },
month: { $month: "$MyDateField" },
day: { $dayOfMonth: "$MyDateField" },
hour: { $hour: "$MyDateField" },
minutes: { $minute: "$MyDateField" },
seconds: { $second: "$MyDateField" },
milliseconds: { $millisecond: "$MyDateField" },
dayOfYear: { $dayOfYear: "$MyDateField" },
dayOfWeek: { $dayOfWeek: "$MyDateField" },
week: { $week: "$MyDateField" }
}
}
]
)
That will return this:
{
"_id" : "5897697667f26827dc9c9028",
"year" : 2017,
"month" : 2,
"day" : 5,
"hour" : 18,
"minutes" : 5,
"seconds" : 41,
"milliseconds" : 822,
"dayOfYear" : 36,
"dayOfWeek" : 1,
"week" : 6
}
Is that getting you any closer to a solution?

Answer 3

You can do smth like this in mongo shell:
db.foo_collection.aggregate([
{'$addFields': {
'extracted_date': {'$dateFromParts': {
'year': {'$year': "$some_datetime_field"},
'month': {'$month': "$some_datetime_field"},
'day': {'$dayOfMonth': "$some_datetime_field"}
}}
}},
{'$match': {'$extracted_date': ...}}
])
This query extracts date from datetime field and then applies some filter expression on this date.