Search array for dates within a range - mongodb

Question

I am new to MongoDB, keep that in mind as I ask my questions please. I have the following collection named 'documents' where I have an array named attributes which contains key:value pairs of different types.
{
"_id" : ObjectId("5d376c67f6c305c7571f7dd7"),
"name" : "testContract.pdf",
"fileType" : "pdf",
"attributes" : [
{
"abc" : 1
},
{
"def" : ISODate("2012-12-01T08:00:00Z")
},
{
"ghi" : "test"
}
]
}
{
"_id" : ObjectId("5d376ca4f6c305c7571f7dd8"),
"name" : "1099.pdf",
"fileType" : "pdf",
"attributes" : [
{
"def" : ISODate("2012-06-03T07:00:00Z")
},
{
"ghi" : "taxes"
}
]
}
What I would like to do is return one or more documents from this collection that fit within a date range. For example I can return all documents that have a fileType of 'pdf' with the following query -->
db.documents.find({"fileType":"pdf"});
But what I am trying to figure out is can I search an array containing different data types like dates in a range successfully while also being able to search for strings. I can also search the attributes array with the following -->
db.documents.find({"attributes":{"ghi":"test"}});
Here is an example of what I am trying to get but it is not working...
db.documents.find({'attributes':$match:{[{'def':{$gte:new Date('2011-11-30')}}]}});

Answer 1

Is something like this what you are looking for?
Based on the following documents:
{
"_id" : ObjectId("5d38aad64850fbd5d13f14bd"),
"name" : "testxx.pdf",
"attributes" : [
{
"abc" : 1
},
{
"def" : ISODate("2012-12-01T08:00:00Z")
},
{
"ghi" : "test"
}
]
}
{
"_id" : ObjectId("5d38b0eae4adbe945b6cbb89"),
"name" : "testyy.pdf",
"attributes" : [
{
"abc" : 2
},
{
"def" : ISODate("2013-12-01T08:00:00Z")
},
{
"ghi" : "test1"
}
]
}
{
"_id" : ObjectId("5d38b12f21e647b8d384d841"),
"name" : "testzz.pdf",
"attributes" : [
{
"abc" : 3
},
{
"def" : ISODate("2012-05-01T08:00:00Z")
},
{
"ghi" : "test"
}
]
}
Query def > 2010/11/30 - returns all 3 docs above
db.chkdates.find({'attributes.def':{$gte:new Date(2010,11,30)}}).pretty()
Adding another key/value pair and range looks like:
db.chkdates.find({'attributes.def':{$gte:new Date(2011,12,12),
$lte:new Date(2012,10,12)},
'attributes.ghi':'test'}).pretty()
Returns only 1 document:
{
"_id" : ObjectId("5d38b12f21e647b8d384d841"),
"name" : "testzz.pdf",
"attributes" : [
{
"abc" : 3
},
{
"def" : ISODate("2012-05-01T08:00:00Z")
},
{
"ghi" : "test"
}
]
}

Answer 2

You can use the $gte and $lte for querying within a date range. It would look something like this:
{'def': { $gte: qryDateFrom, $lte: qryDateTo }}
Depending on if you're using aggregate pipleline or a regular mongoose query, you'd just apply this accordingly.
For instance, using $match in an aggregate with a string match included, it would look like this:
$match: {
$and: [
{'id': { $ne: req.user._id }},
{'def': { $gte: qryDateFrom, $lte: qryDateTo }}
]
}