Hello I am trying to delete pushed (data) _id from a document array, but I am getting no response while executing.
Also, since it is a relational _id which I am trying to delete. How can I delete from the collection it is actually stored ?
here is my delete route:-
router.delete('/userDelete/:userId', checkAuth , (req, res, next) =>{
if(req.userData.role2 === 'admin') {
Admin.findOneAndDelete({_id: req.params.userId},{ $pull: { 'admins.users': {_id: req.params._id}}},{new: true})
.exec()
.then(result => {
res.status(200).send(["Deleted"]);
})
.catch(err =>{
if (err.code == 500)
res.status(500).send(["Didn't get deleted"]);
else
return next(err);
});
}else{
res.send(["Unauthorized. Not deleted"]);
}
});
This is the nested object looks like :-
{
"admins": {
"users": [
"5d0364048db4957100f33fea" //<===want to delete this relational id
],
"email": "1cf1eede89#himail.online",
"password": "$2a$10$vHyGxX9P.t0/ybKcmIzkc.ZCX18oHaVnvTgJIWA2gTNzJ3TCdXS4a",
"_id": "5d0339d5b4b28b6ddff06802",
"companyName": "GH",
"__v": 0
}
This is my controller :-
var admin = new Admin();
admin.companyName = req.body.companyName;
admin.admins = {
email : req.body.email,
password: req.body.password,
users : []
};
Is is also possible to delete records from each and every collections where particular _id data is located ?
You need to find the Document and update,
Data
{
"_id" : "5d0339d5b4b28b6ddff06802",
"admins" : {
"users" : [
"5d0364048db4957100f33fea"
]
}
}
Query
db.users.updateOne(
{ _id: req.params.userId },
{
$pull: {
"admins.users": req.params._id
}
}
);
Result
{
"_id" : "5d0339d5b4b28b6ddff06802",
"admins" : {
"users" : [ ]
}
}
Related
I want to return one index's object of the array,
but when I query, It returns to me that all of the documents.
This is my Schema(userTb)
const userTbSchema = new Schema({
_id: mongoose.Schema.Types.ObjectId,
userId: String,
folders: [
{
folderTitle: String,
}
]
}
and this is the result of the query of my Schema(userTb).
{
"_id": "5fc4c13f32ab3174acb08540",
"userId": "go05111",
"folders": [
{
"_id": "5fb7b0473fddab615456b166",
"folderTitle": "first-go"
},
{
"_id": "5fb7b0473fddab615456b16b",
"folderTitle": "second-go"
}
]
}
I want to get the only { "folderTitle" : "first-go" } folder's object, like...
{
"_id": "5fb7b0473fddab615456b166",
"folderTitle": "first-go"
}
so I query like this
router.get('/folder/:folderId', (req, res, next) => {
UserTb.find({ folders : { "$elemMatch" : { _id : req.params.folderId} } })
.exec()
.then(docs => {
res.status(200).json({
docs
});
})
.catch(err => {
res.status(500).json({
error: err
});
});
});
but the result is nothing changed.
I tried a few different ways, but it didn't work out.
how can I fix it?
please help me...
Try this (live version):
UserTb.aggregate({
$match: {
"folders._id": req.params.folderId }
},
{
$project: {
folders: {
$filter: {
input: "$folders",
as: "f",
cond: {
$eq: [
"$$f.folderTitle",
"first-go"
]
}
}
},
_id: 0
}
})
It will retrieve folders:[{...}] this will be easy to tackle using JS, and quicker.
Mechanism
Match only documents containing _id:folderId
project only the inner document
This is how my "Users" databse looks like:
{
"_id" : ObjectId("5f1408d3c0e8c130503daafd"),
"username" : "Akhil Jagga",
"data" : [
{
"_id" : ObjectId("5f15cde9329fc9300c7f3843"),
"nameOfList" : "home",
"items" : [
{
"_id" : ObjectId("5f15cde9329fc9300c7f3844"),
"nameOfItem" : "this is the list item"
}
]
},
{
"_id" : ObjectId("5f15cebd9a97051d80c6c6ad"),
"nameOfList" : "personal",
"items" : [
{
"_id" : ObjectId("5f15cebd9a97051d80c6c6ae"),
"nameOfItem" : "this is the list item"
},
{
"_id" : ObjectId("5f15cfd0d73dc330dc8e7fd1"),
"nameOfItem" : "lol"
}
]
}
],
"__v" : 48
}
I want to delete a specific object from "items" array say with ObjectId("5f15cebd9a97051d80c6c6ae"), using mongoose in nodejs .
I tried by writting the following code but it does't work:
app.post("/delete", redirectLogin, function(req, res) {
const checkedItemId = req.body.checkbox;
const checkedItemName = req.body.hiddenInput;
const listName = req.body.listName;
console.log("item id: " + checkedItemId);
User.findOneAndUpdate(
{
username: req.session.userId
},
{
$pull: {
data: {
items: {
_id: checkedItemId
}
}
}
},
function(err, foundList) {
console.log(foundList);
res.redirect("/");
});
});
I have tried using findOneAndUpdate, if I write name of item with the
id it deletes the whole list from data array containing that item
name and id.
Thankyou for your time.
Try this one,
const username = req.session.userId;
const listName = req.body.listName;
const checkedItemId = req.body.checkbox;
User.update({ "username": username}, { "$pull": { `data.${listName}.items`: { "_id": checkedItemId } }}, { safe: true, multi:true }, function(err, obj) {
//do rest
});
I want to update multiple documents.
My current Document,
Document Account
{
"_id" : "5cbd96aca1a6363473d4g8745",
"contact" : [
"5cbd96aca1a6363473d4a968",
]
},
{
"_id" : "5cbd96aca1a6363473d4g8746",
"contact" : [
"5cbd96aca1a6363473d4z7632",
]
}
I need below output,
update contact array with different _id.
Document Account
{
"_id" : "5cbd96aca1a6363473d4g8745",
"contact" : [
"5c98833f98770728a7047f1a",
"5cbd96aca1a6363473d4a968",
]
},
{
"_id" : "5cbd96aca1a6363473d4g8746",
"contact" : [
"5caddf78b8c0645402090536",
"5cbd96aca1a6363473d4z763",
]
}
Use $addToSet or $push to push id with bulk update.
You can use update with upsert. It will update the doc if exist and if not then it will create new one.
for example:
//Make a obj to set
var contacts = {
id: req.body.id,
contactIds: req.body.contactIds,
};
req.app.db.models.ModelsName.update(
{
//if you want multiple fields to be update
$and: [{ id: contacts.id }, { contactIds: { $in: contacts.contactIds } }]
},
//Set the above obj
{ $set: contacts },
{ upsert: true },
(err, result) => {
if (err) {
console.log(err.message)
}
console.log("Updated successfully")
})
This is just a reference. Modify accordingly your use.
You can use Bulk.find.update() method to update all matching documents.
example:
var bulk = db.items.initializeUnorderedBulkOp();
bulk.find( { status: "D" } ).update( { $set: { status: "I", points: "0" } } );
bulk.find( { item: null } ).update( { $set: { item: "TBD" } } );
bulk.execute();
I tried to remove an object from document array but something not working:
This is my object:
{
"_id" : ObjectId("5b487aa1427e5a1edc1cdbac"),
"location" : {
"latitude" : 0,
"longitude" : 0
},
"email" : "ran#gmail.com",
"firstName" : "Ran",
"lastName" : "Alcobi",
"interests" : [
ObjectId("5b49a44bc3b19929b098547e")
],
}
I removed Interest from the interests collection and I need that the interest will be removed from the Interests array of the user:
this is my code:
router.delete('/:id', (req, res) => {
var id = req.params.id;
if (!ObjectID.isValid(id)) {
return res.status(404).send();
}
Interest.findOneAndRemove({
_id: id,
}).then((interest) => {
if (!interest) {
return res.status(404).send();
}
User.update(
{$pull:
{interests: {$in : interest._id} }
},
{multi: true},
).then((user) => {
console.log(user);
res.send({interest});
}).catch((e) => {
res.status(400).send();
});
});
});
Thanks a lot for helpers. I would be happy to know what is my mistake.
You are passing $pull in wrong parameter of update query... In update query first parameter is for filter and second parameter is for update operation... So you have to first filter with $in and then $pull from the interest array...
So, finally you need to do something like this
User.update(
{ interests: { $in : [interest._id] } },
{ $pull: { interests: interest._id } }
{ multi: true },
)
I have a schema that Looks like this
var Post = new mongoose.Schema({
author: {
type: mongoose.Schema.Types.ObjectId,
ref: 'User'
},
created: {
type: Date,
Default: Date.now
})
I have a User Table as well. I Have a array of user ids and i am trying to search the post table based on an array of user ids
For Example
var userIds = ["575e96652473d2ab0ac51c1e","575e96652473d2ab0ac51c1d"] .... and so on
I want to return all posts created by these users. And posts should be sorted by their creation date. Is there a way to group this post based on the user ids provided, basically match the posts for an individual user?
The result I am trying to attain is something like this:
[{
userAId : "56656.....",
post : [postA, postB],
},{
userBId :"12345...",
post : [postA, postB]
}]
How do I write this query?
This is what I have so far
Post.aggregate([{
// {"$unwind" : ""},
// "$group": {
// _id: "$author",
// "created" : {"$sum" : 1 }
// }
"$match" : { author : id}
}]).exec(function(error, data) {
if(error){
return console.log(error);
}else{
return console.log(data)
}
})
{
"_id" : ObjectId("575e95bc2473d2ab0ac51c1b"),
"lastMod" : ISODate("2016-06-13T11:15:08.950Z"),
"author" : ObjectId("575dac62ec13010678fe41cd"),
"created" : ISODate("2016-06-13T11:15:08.947Z"),
"type" : "photo",
"end" : null,
"commentCount" : 0,
"viewCount" : 0,
"likes" : 0,
"tags" : [],
"title" : "Today is a good day",
"__v" : 0
}
To return all posts created by users depicted in a list of ids, use the $in operator in your query and then chain the sort() method to the query to order the results by the created date field:
Post.find({ "author": { "$in": userIds } })
.sort("-created") // or .sort({ field: 'asc', created: -1 });
.exec(function (err, data){
if(err){
return console.log(err);
} else {
return console.log(data);
}
});
To get a result where you have the post id's grouped per user, you need to run the following aggregation operation:
Post.aggregate([
{ "$match" : { "author": { "$in": userIds } } },
{ "$sort": { "created": -1 } },
{
"$group" : {
"_id" : "$author",
"posts" : { "$push": "$_id" }
}
},
{
"$project": {
"_id": 0,
"userId": "$_id",
"posts": 1
}
}
]).exec(function (err, result){
if(err){
return console.log(err);
} else {
return console.log(result);
}
});
Or with the fluent API:
Post.aggregate()
.match({ "author": { "$in": userIds } })
.sort("-created")
.group({
"_id" : "$author",
"posts" : { "$push": "$_id" }
})
.project({
"_id" : 0,
"userId" : "$_id",
"posts": 1
})
.exec(function (err, result){
if(err){
return console.log(err);
} else {
return console.log(result);
}
});
This should be possible without aggregation.
Post
.find({ author: { $in: userIds } })
.sort({ created: -1 })
If you get CastError: Cast to ObjectId failed, make sure to map your userIds array from an array of strings to an array of mongoose id's.
userIds = userIds.map(userId => new mongoose.Types.ObjectId(userId))