How to limit the result of the pipeline according to a date, week and month range? - mongodb

Question

I have a pipeline that gives me the result according to the players belonging to a certain company in a daily, weekly, and monthly manner. I have a date filter in the dashboard which gives an iso date range. I want to limit or range my results according to the date filter? is there any way to do it in the pipeline?
if (chartType === 'Daily') {
statsPipelineCondition = {
_id: { day: { $dayOfMonth: '$createdAt' }, month: { $month: '$createdAt' }, year: { $year: '$createdAt' } },
};
sortCondition = { '_id.year': 1, '_id.month': 1, '_id.day': 1 };
} else if (chartType === 'Monthly') {
statsPipelineCondition = {
_id: { month: { $month: '$createdAt' }, year: { $year: '$createdAt' } },
};
sortCondition = { '_id.year': 1, '_id.month': 1 };
} else {
statsPipelineCondition = {
_id: { week: { $week: '$createdAt' }, year: { $year: '$createdAt' } },
};
sortCondition = { '_id.year': 1, '_id.week': 1 };
}
const statsPipeline = [
{
$group: {
...statsPipelineCondition,
TOTAL: { $sum: 1 },
XR: { $sum: { $cond: [{ $in: ['$company', ['XR', 'CR', 'DX']] }, 1, 0] } },
CT: { $sum: { $cond: [{ $eq: ['$company', 'CT'] }, 1, 0] } },
MR: { $sum: { $cond: [{ $eq: ['$company', 'MR'] }, 1, 0] } },
MG: { $sum: { $cond: [{ $in: ['$company', ['NM', 'MM', 'MG']] }, 1, 0] } },
},
},
{
$sort: {
...sortCondition,
},
},
];
Date filter:
datefilter - { '$gte': '2020-09-01T04:49:50.899Z',
'$lte': '2020-11-03T04:49:50.899Z' }

Answer 1

You need to add a $match stage prior to the $group stage to filter our based on the range:
let datefilter = {
'$gte': new Date('2020-09-01T04:49:50.899Z'),
'$lte': new Date('2020-11-03T04:49:50.899Z')
};
const statsPipeline = [
{
$match: {
createdAt: datefilter
}
},
{
$group: {
...statsPipelineCondition,
TOTAL: { $sum: 1 },
XR: { $sum: { $cond: [{ $in: ['$company', ['XR', 'CR', 'DX']] }, 1, 0] } },
CT: { $sum: { $cond: [{ $eq: ['$company', 'CT'] }, 1, 0] } },
MR: { $sum: { $cond: [{ $eq: ['$company', 'MR'] }, 1, 0] } },
MG: { $sum: { $cond: [{ $in: ['$company', ['NM', 'MM', 'MG']] }, 1, 0] } },
},
},
{
$sort: {
...sortCondition,
},
},
];

Answer 2

Okay, So for some reason. MongoDB doesn't like dates in strings. It would be much better if we just convert the strings by an operator provided by the aggregation framework and this will make the things work.
{
$match: {
$expr: {
$and: [
{
$gte: [
'$createdAt',
{
$dateFromString: {
dateString: dateFilter.$gte,
},
},
],
},
{
$lte: [
'$createdAt',
{
$dateFromString: {
dateString: dateFilter.$lte,
},
},
],
},
],
},
},
},