Filter array elements with $regex - regex

Question

///sample Data
{
"_id" : "CUST1234",
"Phone Number" : "9585290750",
"First Name" : "jeff",
"Last Name" : "ayan",
"Email ID" : "",
"createddate" : 1462559400000.0,
"services" : [
{
"type" : "Enquiry",
"timeSpent" : "0:00",
"trxID" : "TRXE20160881",
"CustomerQuery" : "Enquiry about travell agent numbers in basaveshwara nagara",
"ServiceProvided" : "provided info through whatsapp",
"Category" : "Tours/Travels",
"callTime" : "2016-05-06T18:30:00.000Z",
"ActualAmount" : 0,
"FinalAmount" : 0,
"DiscountRuppes" : 0,
"DiscountPerctange" : 0
},
{
"type" : "Enquiry",
"timeSpent" : "0:00",
"trxID" : "TRXE20160882",
"CustomerQuery" : "Enquiry about Electric bill payment of house",
"ServiceProvided" : "Service provided",
"Category" : "Utility Services",
"callTime" : "2016-05-10T18:30:00.000Z",
"ActualAmount" : 0,
"FinalAmount" : 0,
"DiscountRuppes" : 0,
"DiscountPerctange" : 0
},
{
"type" : "Enquiry",
"timeSpent" : "0:00",
"trxID" : "TRXE20160883",
"CustomerQuery" : "Enquiry about KPSC office number",
"ServiceProvided" : "provided info through whatsapp",
"Category" : "Govt Offices/Enquiries",
"callTime" : "2016-05-13T18:30:00.000Z",
"ActualAmount" : 0,
"FinalAmount" : 0,
"DiscountRuppes" : 0,
"DiscountPerctange" : 0
},
{
"type" : "Enquiry",
"timeSpent" : "0:00",
"trxID" : "TRXE20160884",
"CustomerQuery" : "Enquiry about Sagara appolo hospital contact number",
"ServiceProvided" : "provided the information through call",
"Category" : "Hospitals/Equipments",
"callTime" : "2016-05-14T18:30:00.000Z",
"ActualAmount" : 0,
"FinalAmount" : 0,
"DiscountRuppes" : 0,
"DiscountPerctange" : 0
},
]
}
Expected Output : entire data that matches particular string in search box from "services" field.
db.collection.aggregate([
{
$match: {
"Phone Number": "9585290750",
"services": { $regex: "/^t/", $options: "s i" }
}
},
{
$project: {
"Services": "services"
}
}
]);
I am facing an issue in regex portion in the above Collection, services is an array field. Please help me to filter the data.

Answer 1

Guys since i am new to Mongodb it took me a day to find a proper solution to my task. I have a solution to my issue. If you guys have better query than this, just post it or modify it....
db.collections.aggregate([
{"$match":{"Corporate_ID":"id"}},
{"$unwind":"$services"},
{"$match":{"$or":[
{"services.type":{$regex:'TRXF2016088142',"$options": "i"}},
{"services.timeSpent":{$regex:'TRXF2016088142',"$options": "i"}},
{"services.trxID":{$regex:'TRXF2016088142',"$options": "i"}},
{"services.CustomerQuery":{$regex:'F',"$options": "i"}},
{"services.ServiceProvided":{$regex:'F',"$options": "i"}},
{"services.Category":{$regex:'F',"$options": "i"}},
{"services.callTime":{$regex:'TRXF2016088142',"$options": "i"}},
{"services.ActualAmount":{$regex:'TRXF2016088142',"$options": "i"}},
{"services.FinalAmount":{$regex:'TRXF2016088142',"$options": "i"}},
{"services.DiscountRuppes":{$regex:'TRXF2016088142',"$options": "i"}},
{"services.DiscountPerctange":{$regex:'TRXF2016088142',"$options": "i"}}
]}},
{"$unwind":"$services"},
{"$project":{
"service":"$services"}
}
])

Answer 2

This is because you are passing in a string of JavaScript regular expression object to $regex. Change your regex to one of the following.
"service": { "$regex": /^t/, "$options": "si" }
or
"service": { "$regex": "^t", "$options": "si" }