Server receives three dynamic keys: map_id -> section_id -> subsection_id.
User model:
{
_id: userId,
skills: {
[map_id]: {
[section_id]: {
[subsection_id]: {
...subsectionData
}
}
},
...otherMapKeys
}
}
How to update subsection data?
This solution with mongoose Model.update works correctly:
const dynamicLink = `skills.${map_id}.${section_id}.${subsection_id}`;
userModel.update(
{ id: userId },
{ $set: { [dynamicLink]: subsection } },
{ upsert: true }
);
Related
I have a mongo schema like this.
{
userID:19202,
products:[ { id:020, name:'first' }]
}
I want to pop items from the product array based on id. I used the following command. although it didn't give any error, it also not deleting elements from an array.
userCart.updateOne(
{ userID:userID},
{ $pull: { products: { id:id } } }
)
.then((data) =>
{
if(data)
{
//data is {
"n": 1,
"nModified": 0,
"ok": 1
}
return res.json({
status:true,
message:"cart updated"
})
}
})
Demo - https://mongoplayground.net/p/mh6fXN21vyR
Make sure id and products.id are of the same type as in your document in the database. As your sample, both should be numbers.
if they both are number
db.collection.update({
userID: 19202
},
{
$pull: {
"products": { id: 20 }
}
})
Not Working here - https://mongoplayground.net/p/3zhv8yoH2o9 when "products": { id: "20" }. products.id is a string in the mongo query and in the database in number so mismatched.
Try this one:
db.userCart.update(
{ userID:userID },
{ $pull: { items: { id: 020 } } },
false, // Upsert
true, // Multi
);
I'm using mongoose with Node.js to create a document of chat with participants as one of the fields if the chat doesn't exist.
If it does exist then simply increment the status to 1 or any number.
My current Solution:
try {
let query = { participants: { $all: [CURRENT_USER_ID, TARGETED_ID] } };
let update = { $inc: { status: 1 }};
let options = { upsert: true, new: true };
let chat = await Chat.findOneAndUpdate(
query,
update,
options
).exec();
console.log(chat);
} catch (err) {
console.log(err.message);
}
I will receive an error
"cannot infer query fields to set, path 'participants' is matched
twice"
I even use this solution and it doesn't work, it created an empty list of participants instead.
let query = {
participants: {
$all: [
{ $elemMatch: { $eq: CURRENT_USER_ID } },
{ $elemMatch: { $eq: TARGETED_ID } }
]
}
};
Any help would be really helpful. Thanks
I am basically trying to update a document and then select the fields from the result where the field value is not equal to something. Assume jwt_id to be b816cf00e9f649fbaf613e2ca2d523b5.
Query
const removeDevices = await Identity.findOneAndUpdate(
{
userID: user_id
},
{
$pull: {
activeTokens: {
jti: {
$ne: jwt_id
}
}
}
},
).select(["-_id", "activeTokens.jti"]);
Now, running this query gives the following output:
{ activeTokens:
[ { jti: '5d872359af2c47e5970c1fae531adf0e' },
{ jti: 'd3ac84f520614067b1caad504d7ab27f' },
{ jti: '25c6fa96705c4eec96e1427678c3ff50' },
{ jti: 'b816cf00e9f649fbaf613e2ca2d523b5' }
]
}
How can I get all the jti fields except { jti: b816cf00e9f649fbaf613e2ca2d523b5 } from the select command?
Desired Output
{ activeTokens:
[ { jti: '5d872359af2c47e5970c1fae531adf0e' },
{ jti: 'd3ac84f520614067b1caad504d7ab27f' },
{ jti: '25c6fa96705c4eec96e1427678c3ff50' },
]
}
It's hard to say for certain without testing, but i don't think mongoose returns the document after it was modified, but rather simply returns the matching document. So, i think in the case of findOneAndUpdate, you would have to have your query match to do the pull, and then manually filter the array again in application code to get the desired output.
This might work:
const removeDevices = await Identity.findOneAndUpdate(
{
userID: user_id
},
{
$pull: {
'activeTokens.jti': { $ne: jwt_id }
}
},
).select(["-_id", "activeTokens.jti"]).then(identity=>identity.activeTokens.filter(token=>token.jti!==jwt_id));
If the above doesn't work for some reason, then i would try something more simpler
simple:
const removeDevices = await Identity.findOne({userID: user_id}).select(["-_id", "activeTokens"]).then(identity=>{
const removedTokens = []
identity.activeTokens = identity.activeTokens.filter(token=>{
if(token.jti===jwt_id) {
return true;
}
removedTokens.push(token);
})
identity.save(err=>{
console.log('doc saved')
});
return removedTokens;
});
or (atomic):
const removeDevices = await Identity.findOne({userID: user_id}).select('activeTokens','jti _id').then(identity=>{
const removedTokens = identity.activeTokens.filter(token=>token.jti!==jwt_id);
const result = await Identity.update({userId:user_id},{$pull:{'activeTokens._id': { $in: removedTokens.map(t=>t._id) } }});
console.log(result.nModified);
return removedTokens;
});
I want to do all the find the data from the collection and then want to update some field as well as depending on want to empty the array.
const addCityFilter = (req, res) => {
if (req.body.aCities === "") {
res.status(409).jsonp({ message: adminMessages.err_fill_val_properly });
return false;
} else {
var Cities = req.body.aCities.split(","); // It will make array of Cities
const filterType = { "geoGraphicalFilter.filterType": "cities", "geoGraphicalFilter.countries": [], "geoGraphicalFilter.aCoordinates": [] };
/** While using $addToset it ensure that to not add Duplicate Value
* $each will add all values in array
*/
huntingModel
.update(
{
_id: req.body.id,
},
{
$addToSet: {
"geoGraphicalFilter.cities": { $each: Cities }
}
},
{$set:{filterType}},
).then(function(data) {
res.status(200).jsonp({
message: adminMessages.succ_cityFilter_added
});
});
}
};
Collection
geoGraphicalFilter: {
filterType: {
type:String,
enum: ["countries", "cities", "polygons"],
default: "countries"
},
countries: { type: Array },
cities: { type: Array },
aCoordinates: [
{
polygons: { type: Array }
}
]
}
But as result, the only city array is getting an update. No changes in filterType.
You appear to be passing the $set of filterType as the options argument, not the update argument.
huntingModel
.update(
{
_id: req.body.id,
},
{
$addToSet: {
"geoGraphicalFilter.cities": { $each: Cities }
},
$set: {
filterType
}
}
).then(function(data) {
res.status(200).jsonp({
message: adminMessages.succ_cityFilter_added
});
});
I'm using sails.js and sails-mongo adapter. Suppose I have a model:
module.exports = {
attributes: {
shema: true
, attributes: {
description: {
type: 'TEXT'
, max: 200
}
, tags: {
type: 'ARRAY'
}
}
}
};
How can I carry out a search in an tags array?
Model.find({
'tags.title': {
contains: 'query'
}
})
.done(function (err, response) {
/**/
});
db.schools.find( { criteria },
{ atributes: { $elemMatch: { tags: value } } } )
there are a great example here: http://docs.mongodb.org/manual/reference/operator/projection/elemMatch/
with waterline
Model.native(function(err, collection) {
// Execute any query that works with the mongo js driver
collection.find( { criteria },
{ atributes: { $elemMatch: { tags: value } } } )
});