In my mongoose schema, I have defined the following properties:
var personnelSchema = new Schema({
fullName: String,
dob: String,
cNumber: String,
address: String,
wCard: String,
dLic: Number,
hrate: Number,
});
Is there a way to retrieve the value of the "hrate" property using only the "fullName" property? I do not have access to the ID, which would make it easier to retrieve the value.
If you want to learn about the mongoDB documentation regarding the find function, you can check it out here: https://docs.mongodb.com/manual/reference/method/db.collection.find/
For information on using mongoose for finding documents, visit this link: http://mongoosejs.com/docs/2.7.x/docs/finding-documents.html/
However, the common way to find documents by field is through the following code snippet:
Model.findOne({ fullName: 'someName'}, function (err, doc){
// doc holds the Document object
});
To retrieve the hrate from the fullname property, you can utilize the projection method.
Use
findto fetch all records andfindOneto find the first matching record.
var projection = 'hrate'
UserModel.findOne({
fullName: "Some String"
}, projection, function (err, data) {
if (!data) {
callback('No data found', null)
} else {
callback(err, data)
}
})
// Query example for MongoDB shell:
> db.getCollection('test').findOne({fullName : "Hardik Shah"}, {'hrate' : 1})
If you require the full document along with the hrate, simply do not include the projection.
UserModel.findOne({
fullName: "Some String"
}, function (err, data) {
if (!data) {
callback('No data found', null)
} else {
callback(err, data)
}
})
// Query example for MongoDB shell:
> db.getCollection('test').findOne({fullName : "Hardik Shah"})
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