When a certain query is done on a mongodb collection, if there are multiple indexes that can be used to perform the query, how does mongodb choose the index for the query? for an example, in a 'order' collection, if…
When I'm making multiple upload it's working fine, but when I'm uploading single file it doesn't work. it says TypeError: req.body.file.map is not a function I don't know what's happening here. is it because I map already the req.body? exports.create…
Below is an example of my "Event" document in MongoDB. I want to be able to query all of the Event documents where the attendees array contains "623d03730e82c57fefa52fb2" (a user ID). Here is one of my event documents: _id: ObjectId(623ce74372a28f08dea6c959)…
slider_value: { type: Number, required: false, }, This is the Mongoose schema for one of the fields in my MongoDB model. Is it possible to specify the acceptable integer values in this field? for example, this field may only accept…
I have the following Mongodb document. { "_id" : ObjectId("62406bfaa1d66f8d99c6e97d"), "skill": "Programming Language" "supply" : [ { "employeeName" : "A1", "skillRating" : 3 }, { "employeeName" : "A2", "skillRating" : 4 }, { "employeeName" : "A3", "skillRating" : 4 },…
i have a collection of category and a collection of products, each product has a categoryId field that has an id of a perticular category. I want to know how many products are there for each category. const categorySchema =…
I'm trying to do a lookup from collection1 to collection2 using attachments.collection2_keys (an array), and at the same time filter collection1 where collection2.type is typeA, for any key in attachments.collection2_keys. I believe this query should work, but it returns no…
I am getting different ID value in JSON response when checking variable as id & _id in DTO CASE I ( using id as variable ) DTO for the response export class UserDetail { @Expose( ) id: string; //HERE ID…
I have created a WhatsApp clone in the backend of Whatsapp clone i am facing following errors. when i run yarn start i am facing following errors in console. yarn start yarn run v1.23.0-20200615.1913 $ node server.js (node:4316) [MONGODB DRIVER]…
Hi Im trying to save time and date to Mongo DB but it seems to be changing the date to another format and even when I try in that format it removes the timezone and changes the time 2022-03-30T09:00:46-07:00 becomes…