PHP & MongoDB show results grouped by date - php

Question

I have an mongodb collection with following documents:
{
"_id" : ObjectId("547af6aea3f0eba7148b4567"),
"check_id" : "f5d654e7-257d-4a93-ae50-2d59dfeeb451",
"chunks" : NumberLong(200),
"num_hosts" : NumberLong(1000),
"num_rbls" : NumberLong(163),
"owner" : NumberLong(7901),
"created" : ISODate("2014-11-30T10:51:26.924Z"),
"started" : ISODate("2014-11-30T10:51:31.558Z"),
"finished" : ISODate("2014-11-30T10:57:08.512Z")
}
{
"_id" : ObjectId("54db19a858a5d395a18b4567"),
"check_id" : "9660e510-1349-43f3-9d5e-8bf4b06179be",
"chunks" : NumberLong(2),
"num_hosts" : NumberLong(10),
"num_rbls" : NumberLong(166),
"owner" : NumberLong(7901),
"created" : ISODate("2015-02-11T08:58:17.118Z"),
"started" : ISODate("2015-02-11T08:58:18.78Z"),
"finished" : ISODate("2015-02-11T08:58:47.486Z")
}
{
"_id" : ObjectId("54db267758a5d30eab8b4567"),
"check_id" : "9660e510-1349-43f3-9d5e-8bf4b06179be",
"chunks" : NumberLong(2),
"num_hosts" : NumberLong(10),
"num_rbls" : NumberLong(166),
"owner" : NumberLong(7901),
"created" : ISODate("2015-02-11T09:52:55.388Z"),
"started" : ISODate("2015-02-11T09:52:56.109Z"),
"finished" : ISODate("2015-02-11T09:53:22.095Z")
}
What I need is to get the result and produce an array similar to this:
Array
(
[2015-02-11] => array
(
//array with results from 2015-02-11
)
[2014-11-30] => array
(
//array with results from 2014-11-30
)
)
I know that it's possible to just perform simply collection->find and then loop through results and use php logic to achieve my goal but is it possible to make it using mongo? Maybe using aggregation framework?
EDIT: I want to group results by "created" date
Any help will be highly appreciated.

Answer 1

Monogo aggregation mongo aggregation group used for this, so below query may solve your problem
db.collectionName.aggregate({
"$group": {
"_id": "$created",
"data": {
"$push": {
"check_id": "$check_id",
"chunks": "$chunks",
"num_hosts": "$num_hosts",
"num_rbls": "$num_rbls",
"owner": "$owner",
"started": "$started",
"finished": "$finished"
}
}
}
}).pretty()
Or
db.collectionName.aggregate({
"$group": {
"_id": "$created",
"data": {
"$push": "$$ROOT"
}
}
}).pretty()
Also in mongo 2.8 $dateToString provide facility to convert ISO date to string format so below query also work
db.collectionName.aggregate([
{
"$project": {
"yearMonthDay": {
"$dateToString": {
"format": "%Y-%m-%d",
"date": "$created"
}
},
"check_id": "$check_id",
"chunks": "$chunks",
"num_hosts": "$num_hosts",
"num_rbls": "$num_rbls",
"owner": "$owner",
"started": "$started",
"finished": "$finished"
}
},
{
"$group": {
"_id": "$yearMonthDay",
"data": {
"$push": "$$ROOT"
}
}
}
]).pretty()

Answer 2

I have managed to solve this using the aggregation framework. Here is the answer, in case anyone need it.
$op = array(
array(
'$project' => array(
'data' => array(
'check_id' => '$check_id',
'chunks' => '$chunks',
'num_hosts' => '$num_hosts',
'num_rbls' => '$num_rbls',
'owner' => '$owner',
'started' => '$started',
'finished' => '$finished',
),
'year' => array('$year' => '$created' ),
'month' => array('$month' => '$created' ),
'day' => array('$dayOfMonth' => '$created'),
)
),
array(
'$group' => array(
'_id' => array('year' => '$year', 'month' => '$month', 'day' => '$day'),
'reports_data' => array('$push' => '$data'),
)
),
);
$c = $collection->aggregate($op);