Salam (means Hello) :)
I'm using node-mongodb-native driver and I need to update specific fields of objects stored in an array. this is a sample document in my mongodb collection:
{
"fields" : [
{
"en" : "birthDate",
"status" : "enable",
"index" : 10
},{
"en" : "email",
"status" : "enable",
"index" : 4
},{
"en" : "inviterCode",
"status" : "enable",
"index" : 2
}
]
}
and this is my new data:
var newData = [
{
"en" : "birthDate",
"status" : "disable",
},{
"en" : "email",
"status" : "disable",
}
];
as you can see, if en field matches, status field should be updated. I know that following query works for a single update, but how can I achieve multiple updates with a single query?
collection.update(
{'fields.en': 'birthDate'},
{$set:{'fields.$.status': 'disable'}},
{w:1, multi: true},
function(error, count){
}
);
Salam (means Hello) :)
I'm using node-mongodb-native driver and I need to update specific fields of objects stored in an array. this is a sample document in my mongodb collection:
{
"fields" : [
{
"en" : "birthDate",
"status" : "enable",
"index" : 10
},{
"en" : "email",
"status" : "enable",
"index" : 4
},{
"en" : "inviterCode",
"status" : "enable",
"index" : 2
}
]
}
and this is my new data:
var newData = [
{
"en" : "birthDate",
"status" : "disable",
},{
"en" : "email",
"status" : "disable",
}
];
as you can see, if en field matches, status field should be updated. I know that following query works for a single update, but how can I achieve multiple updates with a single query?
collection.update(
{'fields.en': 'birthDate'},
{$set:{'fields.$.status': 'disable'}},
{w:1, multi: true},
function(error, count){
}
);
Salam (means Hello) :)
I'm trying to improve speed of my nodejs website which depends on some mongodb operations and serving some static files. I'm using node-mongodb-native driver. as far as I know:
MongoClient.connect() for every database operation. nginx is not currently an option for me. So using a single db connection along side using apache for static files should be fastest combination, but tests on a semi-production environment don't verify this theory:
file server / db connection : speed
nodejs / multiple : 24895ms
apache / multiple : 10770ms
nodejs / single : 7068ms
apache / single : 14995ms
So why when using multiple connections, apache makes my application load faster, and when using a single connection, apache makes my application load slower?
I'm using mongodb native driver in a nodejs environment and I need to convert an id string to ObjectId to use it in my update query, how can I do this?
Salam (means hello) :)
I'm using mongodb native driver in a nodejs environment and I need to convert an id string to ObjectId to use it in my update query, how can I do this?
I need to check if a collection exists on a certain database and create it if it doesn't. I know that
db.createCollection(collName, {strict:true}, function(error, collection))
checks for existance of collection collName before creating it and sets error object. but I need an independent function to check that.
Salam (means Hello) :)
I need to check if a collection exists on a certain database and create it if it doesn't. I know that
db.createCollection(collName, {strict:true}, function(error, collection))
checks for existance of collection collName before creating it and sets error object. but I need an independent function to check that.
Salam (means hello) :)
I'm running mongodb 2.4.8 and Mongo DB Native NodeJS Driver. when I use the following function, only first document that matched query updates. how can I update all matching documents?
function update(coll, query, update, callback){
var options = options || {};
MongoClient.connect('mongodb://127.0.0.1:27017/dbName', function(error, db) {
if(error){
return console.dir(error);
}
db.collection(coll).update(query, update, {w:1}, function(error, result) {
callback(error, result);
});
});
}
I installed my mongodb driver via npm install mongodb command, which installs version 1.3.23, does this driver version support multi update? if not, how can I install a newer version of driver supports multi update?