Mongodb update deeply nested subdocument

Mongodb update deeply nested subdocument

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Mongodb update deeply nested subdocument
Tag : mongodb , By : omaidog
Date : November 25 2020, 01:01 AM

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mongodb $in, search deeply nested subdocument

Tag : mongodb , By : Raghaw
Date : March 29 2020, 07:55 AM
hope this fix your issue I have the following collections in mongo: , Please check the below query :
                            { "colours.WH" :{ $exists:1 } } , 
                            { "colours.WH.size_code_id" : "S"} 
                                        { "colours.WH" :{ $exists:1 } } , 
                                        { "colours.WH.size_code_id" : "S"} 
                                        { "colours.BL" :{ $exists:1 } } , 
                                        { "colours.BL.size_code_id" : "S"} 
// Colours you want to search
var varray = new Array("WH","BL");
var fname = "colours", lname = "size_code_id";
var arr = new Array();
var mquery = {"$or":[]};

for( var i = 0; i < varray.length; i++ )
    var query = { "$and" : []};

    // This line will dynamically construct a key as "colours.WH"
    var s1 = fname.concat(".").concat(varray[i]);
    // This line will dynamically construct a key as "colours.WH.size_code_id"
    var s2 = fname.concat(".").concat(varray[i]).concat(".").concat(lname);
    var sub1 = {}, sub2 = {};

    sub1[s1] = { $exists:1 };
    sub2[s2] = "S";


mquery["$or"] =arr;


How to update nested subdocument by condition in MongoDB?

Tag : mongodb , By : Mihai Mocanu
Date : March 29 2020, 07:55 AM
around this issue I have the following data structure: , Here you go:
db.journeys.update({'messages.id':  ObjectId("560feab9682290c21877010f")}, {$set: {'messages.$.title': 'New Title'}});

update deeply nested document in mongodb

Tag : mongodb , By : Nulq
Date : March 29 2020, 07:55 AM
this one helps. As mentioned in the documentation there is no way to rename fields within arrays. Your only option is to iterate over your collection documents, read them and update each with $unset old/$set new operations.

Update deeply nested subdocument using mongoose

Tag : node.js , By : Salikh
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further You can get the document with findOne() method. When you have the room object, you can finde the board with this call:
var board = room.Boards.find(board => board.BoardId === BoardID);

update deeply nested array mongodb

Tag : arrays , By : Atanas
Date : March 29 2020, 07:55 AM
Hope this helps I want to push one value in attachments array using mongodb. I want to update query using following criteria. , You can try with mongodb 3.6 arrayFilters
  { "_id": ObjectId(5b56bd2f3e18580edc85af73) },
  { "$push": { "Cards.$[card].comments.$[comment].attachments": "2" } },
  { "arrayFilters": { "card.cardID": ObjectId("5b56c895d0a04836f71aa776"), "comment.commentId": 2 } }
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