Mongoose find by data field from schema into services - mongodb

Question

If i have a schema like this in my mongoose
'use strict';
var mongoose = require('mongoose'),
Schema = mongoose.Schema;
var lovSchema = new mongoose.Schema({
name : { type: String },
values : [{ type: String }]
});
module.exports = mongoose.model('lovs', lovSchema);
Generally in mongoose we find document with reff to _id from collections.
function getOneById(id){
var deferred = Q.defer();
model.findOne({ _id: id })
.exec(function (err, item) {
if(err) {
console.log(err);
deferred.reject(err);
}
else
console.log(item);
deferred.resolve(item);
});
return deferred.promise;
} // gentOneById method ends
But I want to find the document by Name which is a data field in my schema.I tried by modifying _id with name but ended with this error...
{
"message": "Cast to ObjectId failed for value \"regions\" at path \"_id\"",
"name": "CastError",
"type": "ObjectId",
"value": "regions",
"path": "_id"
}

Answer 1

Just use name with a String value:
function getOneByName(name){
var deferred = Q.defer();
model.findOne({ name: name})
.exec(function (err, item) {
if(err) {
console.log(err);
deferred.reject(err);
}
else
console.log(item);
deferred.resolve(item);
});
return deferred.promise;
} // gentOneById method ends
You can test like this:
model.findOne({ name: "Bob"})
And see if you still get an error...