Filter sub document array in Mongoose and return only matching elements
0
I've UserSchema that looks like this
const userSchema = mongoose.Schema({
email: {
type: String,
trim: true,
required: true,
unique: 1
},
password: {
type: String,
required: true,
minlength: 6
},
token: {
type: String
},
role: {
type: Number,
default: 0 // 0 is student, 1 is admin
},
files: [FileSchema],
internships: [InternshipSchema]
});
As can be seen , files and internships are subdocuments. My goal is to filter either of them based on specific input, e.g I would like to filter internships based on country.
However, I'm having a problem of returning only elements that match the search, I can only return all the elements, regardless of search filters being passed in.
I tried to refer querying-subdocument-and-returning-matching-subdocument-only, but could not get it working.
My current code looks like this
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{
$match: {
"internships.country": req.query.country
}
},
{ $unwind: "internships" },
{
$match: {
"internships.country": req.query.country
}
}
);
});
javascript node.js mongodb mongoose
asked Nov 20 '18 at 14:16
SeinfeldSeinfeld
17111
add a comment |
0
I've UserSchema that looks like this
const userSchema = mongoose.Schema({
email: {
type: String,
trim: true,
required: true,
unique: 1
},
password: {
type: String,
required: true,
minlength: 6
},
token: {
type: String
},
role: {
type: Number,
default: 0 // 0 is student, 1 is admin
},
files: [FileSchema],
internships: [InternshipSchema]
});
As can be seen , files and internships are subdocuments. My goal is to filter either of them based on specific input, e.g I would like to filter internships based on country.
However, I'm having a problem of returning only elements that match the search, I can only return all the elements, regardless of search filters being passed in.
I tried to refer querying-subdocument-and-returning-matching-subdocument-only, but could not get it working.
My current code looks like this
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{
$match: {
"internships.country": req.query.country
}
},
{ $unwind: "internships" },
{
$match: {
"internships.country": req.query.country
}
}
);
});
javascript node.js mongodb mongoose
asked Nov 20 '18 at 14:16
SeinfeldSeinfeld
17111
add a comment |
0
0
0
I've UserSchema that looks like this
const userSchema = mongoose.Schema({
email: {
type: String,
trim: true,
required: true,
unique: 1
},
password: {
type: String,
required: true,
minlength: 6
},
token: {
type: String
},
role: {
type: Number,
default: 0 // 0 is student, 1 is admin
},
files: [FileSchema],
internships: [InternshipSchema]
});
As can be seen , files and internships are subdocuments. My goal is to filter either of them based on specific input, e.g I would like to filter internships based on country.
However, I'm having a problem of returning only elements that match the search, I can only return all the elements, regardless of search filters being passed in.
I tried to refer querying-subdocument-and-returning-matching-subdocument-only, but could not get it working.
My current code looks like this
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{
$match: {
"internships.country": req.query.country
}
},
{ $unwind: "internships" },
{
$match: {
"internships.country": req.query.country
}
}
);
});
javascript node.js mongodb mongoose
asked Nov 20 '18 at 14:16
SeinfeldSeinfeld
17111
I've UserSchema that looks like this
const userSchema = mongoose.Schema({
email: {
type: String,
trim: true,
required: true,
unique: 1
},
password: {
type: String,
required: true,
minlength: 6
},
token: {
type: String
},
role: {
type: Number,
default: 0 // 0 is student, 1 is admin
},
files: [FileSchema],
internships: [InternshipSchema]
});
As can be seen , files and internships are subdocuments. My goal is to filter either of them based on specific input, e.g I would like to filter internships based on country.
However, I'm having a problem of returning only elements that match the search, I can only return all the elements, regardless of search filters being passed in.
I tried to refer querying-subdocument-and-returning-matching-subdocument-only, but could not get it working.
My current code looks like this
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{
$match: {
"internships.country": req.query.country
}
},
{ $unwind: "internships" },
{
$match: {
"internships.country": req.query.country
}
}
);
});
javascript node.js mongodb mongoose
javascript node.js mongodb mongoose
asked Nov 20 '18 at 14:16
SeinfeldSeinfeld
17111
asked Nov 20 '18 at 14:16
SeinfeldSeinfeld
17111
asked Nov 20 '18 at 14:16
SeinfeldSeinfeld
17111
asked Nov 20 '18 at 14:16
SeinfeldSeinfeld
17111
asked Nov 20 '18 at 14:16
SeinfeldSeinfeld
17111
17111
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
1
You can try my code:
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{ $project: { internships: 1 } },
// after $project
/*
{_id: ObjectId01, internships: [{country: 1}, {country: 2},...]}
....
*/
{ $unwind: '$internships' },
// after $unwind
/*
{_id: ObjectId01, internships: {country: 1}}
{_id: ObjectId01, internships: {country: 2}}
...
*/
{
$match: {
"internships.country": req.query.country
}
}
// final result: [{_id: ObjectId01, internships: {country: 2}}, ...]
).exec((err, internships) => {
if (err) throw err;
console.log(internships);
// [{_id: ObjectId01, internships: {country: 2}}, ...]
// send data to client
res.status(200).json(internships);
});
});
answered Nov 20 '18 at 15:02
hoangdvhoangdv
1,704610
Do we need any callback or something that will actually return the result ? Cuz if I test it like this with Postman, it has no response. I'm beginner as well, so something that might seem obvious, isn't obvious to me :P
– Seinfeld
Nov 20 '18 at 19:15
This works, thanks.
– Seinfeld
Nov 21 '18 at 18:53
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
You can try my code:
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{ $project: { internships: 1 } },
// after $project
/*
{_id: ObjectId01, internships: [{country: 1}, {country: 2},...]}
....
*/
{ $unwind: '$internships' },
// after $unwind
/*
{_id: ObjectId01, internships: {country: 1}}
{_id: ObjectId01, internships: {country: 2}}
...
*/
{
$match: {
"internships.country": req.query.country
}
}
// final result: [{_id: ObjectId01, internships: {country: 2}}, ...]
).exec((err, internships) => {
if (err) throw err;
console.log(internships);
// [{_id: ObjectId01, internships: {country: 2}}, ...]
// send data to client
res.status(200).json(internships);
});
});
answered Nov 20 '18 at 15:02
hoangdvhoangdv
1,704610
Do we need any callback or something that will actually return the result ? Cuz if I test it like this with Postman, it has no response. I'm beginner as well, so something that might seem obvious, isn't obvious to me :P
– Seinfeld
Nov 20 '18 at 19:15
This works, thanks.
– Seinfeld
Nov 21 '18 at 18:53
add a comment |
1
You can try my code:
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{ $project: { internships: 1 } },
// after $project
/*
{_id: ObjectId01, internships: [{country: 1}, {country: 2},...]}
....
*/
{ $unwind: '$internships' },
// after $unwind
/*
{_id: ObjectId01, internships: {country: 1}}
{_id: ObjectId01, internships: {country: 2}}
...
*/
{
$match: {
"internships.country": req.query.country
}
}
// final result: [{_id: ObjectId01, internships: {country: 2}}, ...]
).exec((err, internships) => {
if (err) throw err;
console.log(internships);
// [{_id: ObjectId01, internships: {country: 2}}, ...]
// send data to client
res.status(200).json(internships);
});
});
answered Nov 20 '18 at 15:02
hoangdvhoangdv
1,704610
Do we need any callback or something that will actually return the result ? Cuz if I test it like this with Postman, it has no response. I'm beginner as well, so something that might seem obvious, isn't obvious to me :P
– Seinfeld
Nov 20 '18 at 19:15
This works, thanks.
– Seinfeld
Nov 21 '18 at 18:53
add a comment |
1
1
1
You can try my code:
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{ $project: { internships: 1 } },
// after $project
/*
{_id: ObjectId01, internships: [{country: 1}, {country: 2},...]}
....
*/
{ $unwind: '$internships' },
// after $unwind
/*
{_id: ObjectId01, internships: {country: 1}}
{_id: ObjectId01, internships: {country: 2}}
...
*/
{
$match: {
"internships.country": req.query.country
}
}
// final result: [{_id: ObjectId01, internships: {country: 2}}, ...]
).exec((err, internships) => {
if (err) throw err;
console.log(internships);
// [{_id: ObjectId01, internships: {country: 2}}, ...]
// send data to client
res.status(200).json(internships);
});
});
answered Nov 20 '18 at 15:02
hoangdvhoangdv
1,704610
You can try my code:
app.get("/api/getInternships", (req, res) => {
User.aggregate(
{ $project: { internships: 1 } },
// after $project
/*
{_id: ObjectId01, internships: [{country: 1}, {country: 2},...]}
....
*/
{ $unwind: '$internships' },
// after $unwind
/*
{_id: ObjectId01, internships: {country: 1}}
{_id: ObjectId01, internships: {country: 2}}
...
*/
{
$match: {
"internships.country": req.query.country
}
}
// final result: [{_id: ObjectId01, internships: {country: 2}}, ...]
).exec((err, internships) => {
if (err) throw err;
console.log(internships);
// [{_id: ObjectId01, internships: {country: 2}}, ...]
// send data to client
res.status(200).json(internships);
});
});
answered Nov 20 '18 at 15:02
hoangdvhoangdv
1,704610
edited Nov 21 '18 at 0:49
answered Nov 20 '18 at 15:02
hoangdvhoangdv
1,704610
answered Nov 20 '18 at 15:02
hoangdvhoangdv
1,704610
answered Nov 20 '18 at 15:02
hoangdvhoangdv
1,704610
1,704610
Do we need any callback or something that will actually return the result ? Cuz if I test it like this with Postman, it has no response. I'm beginner as well, so something that might seem obvious, isn't obvious to me :P
– Seinfeld
Nov 20 '18 at 19:15
This works, thanks.
– Seinfeld
Nov 21 '18 at 18:53
add a comment |
Do we need any callback or something that will actually return the result ? Cuz if I test it like this with Postman, it has no response. I'm beginner as well, so something that might seem obvious, isn't obvious to me :P
– Seinfeld
Nov 20 '18 at 19:15
This works, thanks.
– Seinfeld
Nov 21 '18 at 18:53
Do we need any callback or something that will actually return the result ? Cuz if I test it like this with Postman, it has no response. I'm beginner as well, so something that might seem obvious, isn't obvious to me :P
– Seinfeld
Nov 20 '18 at 19:15
Do we need any callback or something that will actually return the result ? Cuz if I test it like this with Postman, it has no response. I'm beginner as well, so something that might seem obvious, isn't obvious to me :P
– Seinfeld
Nov 20 '18 at 19:15
This works, thanks.
– Seinfeld
Nov 21 '18 at 18:53
This works, thanks.
– Seinfeld
Nov 21 '18 at 18:53
add a comment |
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