Text search multiple fileds not working in nodejs and mongodb - node.js

Question

I am trying to search by concatenating these firstName,middleName and lastName fields
Here is my model
var lectureSchema = new mongoose.Schema({
firstName:{
type:String,
require:"First Name can\'t be empty "
},
middleName:{
type:String,
require:"Middle Name can\'t be empty "
},
lastName:{
type:String,
require:"Last Name can\'t be empty ",
},
email:{
type:String,
require:"Email can\'t be empty "
}
};
lectureSchema.index({firstName:'text', middleName:'text',lastName:'text'});
mongoose.model('Lecture',lectureSchema);
And also here is my Function respond to search API
module.exports.findLecture=(req,res)=>{
var query = req.params.query;
Lecture.find({
$text: {
$search:query
}
}, function(err, result) {
if (err) throw err;
if (result) {
res.json(result)
} else {
res.send(JSON.stringify({
error : 'Error'
}))
}
})
}
here is the route
router.get('/findLecture/:query',checkerUser.findLecture);
But, this only seems to fetch documents that match the firstName field. It doesn't match middleName and lastName field.someone please help me.

Answer 1

I have implemented query to solve this,
Please follow the link,
https://mongoplayground.net/p/3GW2FYH95tj
You have to use aggregation queries to achieve your requirement.
db.collection.aggregate([
{
$project: {
name: {
$concat: [
"$firstName",
"$middleName",
"$lastName"
]
}
}
},
{
$match: {
name: {
$regex: "john1unknown1Doe1"
}
}
}
])
Replace "john1unknown1Doe1" with your regex value like new Regex(req.query.search).