Mongoose connect to multiple collections.

Mongoose connect to multiple collections db. Also please make sure that you have tried that method yourself. js application: Oct 12, 2017 · my solution is working fine right now but it's taking so much time to iterating data collection for finding ids for metaData collection. Mongoose access multiple collection. The data will be posted to the REST API. collection('collectionA'). This approach allows you to query multiple collections in parallel or in sequence, depending on your Jun 26, 2020 · Join Multiple Collections with Mongoose. js application, you can follow a simple process using the Mongoose library, which provides a flexible way to work with MongoDB. js: If you need connections to different databases look here Mongoose and multiple database in single node Jan 26, 2024 · Learn how to effectively manage multiple collections in MongoDB using Mongoose and Node. when using Mongoose, developers define a schema to structure their data, ensuring con Aug 3, 2019 · Now I want to use Mongoose to practice. I need to call the save function and there I define what Jun 28, 2011 · Hi, @Shubham Verma, how to get the multiple records from "social" or "address" collections. Same directory where your package. js by providing a schema-based solution for data validation, querying, and model creation. I am using mongoose for mongo db connections in node js. For example, a User collection separate from an Orders collection. For every model you create, Mongoose creates a new collection. When no collection argument is passed, Mongoose produces a collection name by passing the model name to the utils. js module that has functions to both connect to mongo and return a mongo db instance:. In this article, we will explore the find() method in detail, its syntax, parameters, and how to implement Jan 9, 2022 · Hi, I need help sone help here. js module that establishes and manages connections between a Node. Is it possible to have multiple collections in mongoDB that I can read and write too using the same mongoose connection? I have a collection that is a list of products. values to employees and customfields to customfield. Let Apr 5, 2025 · The Mongoose Schema API Connection. Dec 11, 2023 · Overview FYI : I uploaded a complete project to GitHub. The Default mongoose. js library that simplifies interactions with MongoDB. createconnection创造所有的内部配置连接池的默认大小为5的支持 。使用您的连接选项调整池大小： 使用您的连接选项调整池大小： Connect and share knowledge within a single location that is structured and easy to search. js application and a MongoDB database. in the same query. Apr 10, 2023 · Hello! For starters, I am new to MongoDB. populate() the "student" path from the WorksnapTimeEntry as a source. js to establish the connection I do: mongoose. In this video, I have discussed how you can link two collections in MongoDB using Node. Since your db itself is changing you can't really do anything with a collection of different db. Mongoose acts as an Object Data Modeling (ODM) library, making it easier to structure and interact with MongoDB from Node. connect Mar 19, 2024 · This below code demonstrates how to connect to a MongoDB database using Mongoose in a Node. Apr 10, 2012 · Since all collections are in the hash mongoose. Structure Models by Domain. save(data); injectedMode. But I am unable to do so. You can also explicitly create a collection with various options, such as setting the maximum size or the documentation validation rules. js and Mongoose, a popular MongoDB library that simplifies database interactions. Supported options include: maxTimeMS: Set maxTimeMS for all queries on this connection. Discriminators are a schema inheritance mechanism. I’m anticipating using some sharding for certain types of data I’m storing, but I’d like to keep other collections unsharded to more easily query the dataset as a whole (using indexes, of course). Let Dec 19, 2021 · Please help me out with this as I can't find the answer anywhere. So in my app. The two solutions I have thought of so far is one collection per game (what I currently have) or a single collection where each document has all the stats for all games. Apr 10, 2021 · Hi there, pretty much I just want to quick as about should it be going with Single collection or Multi collection. Mongoose is the most downloaded database framework for Node. MongoDB is the natural choice for Node. injectedMode. options[key] = val. Equivalent to conn. disconnect(); mongoose. passes to MongoDB when creating a new collection. Adjust the pool size using your connection options: Aug 24, 2019 · The problem in accessing multiple Database with Mongoose. Example: HTML Form for Contact Submission Here’s an example of a simple contact form that interacts with the Node. js and MongoDB. Let Bite-sized Mongoose tutorials for busy developers. 1:27031" -u "m103-admin" -p "m103-pass Jun 25, 2021 · I am new to node. connect或mongoose. connect Multiple connections; Connection Pools for waiting until Mongoose creates collections if you use the Jul 22, 2019 · So I have to somehow atomically update multiple collections using MongoDB. Some instances why you might require multiple connections: you have more than one Mar 30, 2020 · How to Connect MongoDB to Node. If you are expecting it the other way around, then you either include the references as an "array" in each Student or you query and combine manually, looking up the "student" field in the WorksnapTimeEntry. After doing some research, I see that I will most likely need to make use of Apr 14, 2020 · Instead of tables and rows, it uses collections and documents to store data. I need a way of inserting the data in bulk into MongoDB without find query for data id. At times we may need multiple connections open to Mongo, each with different read/write settings, or maybe just to different databases for example. Are you looking to leverage TypeScript’s strong-typing with Mongoose for MongoDB? TypeScript allows for easier development of complex MongoDB-based applications by catching errors at compile-time with static types. Mongoose. js is a fast JavaScript runtime. createConnection(). I am trying to connect with multiple databases using the mongoose module in nestjs framework. A buye Nov 25, 2020 · Well, i am stuck in little technical stuff let me explain. env. Edit: I want to connect to multiple DBs dynamically. $ node node-js-mongoose. I can interact with this collection easily through MongoDB's interactive shell; however, when I try to get the collection through Mongoose in an express. But MongoDB Atlas uses clusters with databases inside which again has collections. prototype. js applications, and Mongoose helps you build fast, production-ready applications with Node. save(data); Sometimes I need to save the model to one collection, and sometimes to another. I have this listing collection that has many types. js: import mongoose from "mongoose" ex Dec 30, 2023 · We’ll cover everything from setting up your Mongoose connection to performing queries on your existing data. If you’re used to traditional SQL database engines like MySQL, you will surely have come across the JOIN keyword, which allows you to combine data from multiple tables. Since unsharded I have a large collection of 300 question objects in a database test. I manage to do the first join with a lookup aggregation but the second one is the problem. 0. ts: instead of mongoose. Here’s a step-by-step guide on how to create and manage m Apr 1, 2025 · The Mongoose Schema API Connection. However, things get a bit more complex when your application requires connections to multiple databases. Adjust the pool size using your connection options: Dec 27, 2021 · need to add multiple mongoose connection, In our app scenario, We have N number of organization, So every organization need to have separate Database, Is this possible with mongoose? Mar 21, 2024 · To connect MongoDB to a Node. insert(docs_array, options, callback_function); method. Jun 18, 2018 · I have multiple databases with multiple collections inside my MongoDB. Let Aug 1, 2024 · The Mongoose Schema API Connection. I started using MongoDB for my capstone, as I needed to work with a client. I am able to connect to them in mongosh using mongosh --host "127. Also I don't want multiple models and I have just one project, not various sub-projects. connect()` and how to troubleshoot common issues. connect Mongoose connect to multiple databases. However, I also have a landing page that caputes leads. js Nov 16, 2018 · So I'm trying to retrieve multiple docs using Mongoose and render them using the HBS view engine. June 26, 2020. Oct 27, 2020 · How to connect Mongoose + MongoDB. js involves defining different Mongoose schemas and models for each collection. Below scripts work fine as my Restful API layers. js application. The main function attempts to establish a connection to the MongoDB database using mongoose. Database Deploy a multi-cloud database Search Deliver engaging search experiences Vector Search Design intelligent apps with gen AI Stream Processing Unify data in motion and data at rest Each connection, whether created with mongoose. Is there any option to perform bulk upserts with mongoose for multiple collections in a single query. He also is requesting a lot of specifics about the cluster, and one of them being that he wants to be able to query across multiple databases. I am expecting joins on two collections. connect does what you asserted. It allows us to check how many connections does connection object poses. Learn more about Teams Mongoose - Query from multiple collections. Getting Started with Transactions If you haven't already, import mongoose: import mongoose from 'mongoose'; Jan 8, 2020 · This issue was resolved by: Put . createConnection(mongodbUri). Here I show you how to connect multiple mongodb instances in node js using mongoose ,if you have any doubts or clarifications comment belowMy GitHub profile: Jan 27, 2025 · Connection Pooling: Use Mongoose’s built-in connection pooling to manage multiple database connections efficiently. Another reason is to work around slow trains. ). Setting up Mongoose. MongoDB 3. env file at root directory of project. Each Schema represents a MongoDB collection that will define our models and each key will define a property in our document that will be associated with a type. Installing Mongoose is a straightforward process using npm: npm install mongoose. Nov 26, 2016 · My understanding on the official documentation is that generally when there is only one connection mongoose. Similar to the top answer above, but this code displays the name for each collection, without the other added information (such as type, options, info, etc. Sep 14, 2022 · Hello everyone. Nov 7, 2017 · In this example, the localfield and foreignfield have the same id in multiple collections, so you may be achieving the join accidentally. JS config/db. But what makes it so versatile — the fact that no schema is required — can also make it more difficult to scale and maintain, particularly in a large, production-grade application. This approach allows you to query multiple collections in par Aug 1, 2019 · The `mongoose. Select the database that contains the collections you want to join. Setting up global Mongoose options (e. connect() is use, whereas if there is multiple instance of connection mongoose. Oct 10, 2020 · Is it possible to save the mongoose injected model to multiple collections? (nestjs inection) I'm looking for something like. I am using Mongoose to connect to the database (mongodb://localhost:3002/ I'm with same problem, and now I know it has to do with the fact that you cannot res. values, customfields. You may need multiple connections to MongoDB for several reasons. All apps use the same mongoose models, so the same models are already available in my worker app. My query: If I update an account number in the accounts array in the customer collection, how to update the same account number in the accounts collection. createConnection() to switch db and create your models from that. May 9, 2021 · As there are several collections in the database, a separate callback function needs to be used. NOTE: mongoose instance will still be pointing to original connected db. Oct 17, 2024 · To retrieve data from two different collections in MongoDB using Node. Database Deploy a multi-cloud database Search Deliver engaging search experiences Vector Search Design intelligent apps with gen AI Stream Processing Unify data in motion and data at rest Jun 23, 2024 · Purpose: Establishes a connection to your MongoDB database(s). It is used to debug the connection object when we have multiple connections pointing to one single connection reference. But I am unable to reproduce my requirements. I have two collections, one is for the user data, with firstName, lastName, etc and theres a field called userRole: userRole:{ type: mongoose. Apr 28, 2025 · This article briefly introduces databases, and how to use them with Node/Express apps. providers. connect ('mongodb://user a single value into multiple values for storage. The client requested that I use MongoDB for this project. Sep 1, 2024 · Now you know the basics for integrating Mongoose into your application – let‘s review some best practices when modeling. It explains how object schema and models are declared, the main field types, and basic validation. It also briefly shows a few of the main ways in which you can access model data. However, with NoSQL databases like MongoDB, joins are not an option, since they are, by definition, not Oct 20, 2013 · Definitely the best and most real-world example. How? I passed the options in the mongoose connect, which I find it a bit more clean: mongoose. There's a solution some recommend: using socket. mongo_connection_string , {useNewUrlParser: true}) . connect you have to use mongoose. js will not allow multiple module instances as it has caching system in require(). I have connected dinners collection to May 14, 2021 · Connect and share knowledge within a single location that is structured and easy to search. Oct 25, 2023 · npm install @nestjs/mongoose mongoose. Before accessing a collection, we need to set up Mongoose. Mar 27, 2025 · The Mongoose Schema API Connection. While using multiple mongoose instances, Node. *) is to Create a mongoose connection to connect to Mongo's admin database and make sure you have an admin user. Connect to the default db (just like if you were using something like SQL Server) and then take advantage of useDb to target your DML at the appropriate database. render() inside the callba Nov 28, 2015 · Hi is there a way to switch database with mongoose? I thought I could do it like that: mongoose. At a high level Dec 16, 2014 · I know in the latest version of Mongoose you can pass multiple documents to the create method, or even better in my case an array of documents. Here’s a step-by-step guide on how to create and manage multiple collections using Mongoose in a Node Mongoose creates a default connection when you call mongoose. First, we have to create a schema and reference the f Nov 19, 2017 · I have a node. View a more thorough discussion here of the pros/cons of each option: Mongoose (mongodb) batch insert? mongoose. Mar 25, 2025 · The Mongoose Schema API Connection. It then goes on to show how we can use Mongoose to provide database access for the LocalLibrary website. useDb('userDB'); const postsDb = mongoose. If you don't like this behavior, either pass a collection name or set your schemas collection name option. connection. connect(). createConnection() Parameters: uri «String»; mongodb URI to connect to [options] «Object» passed down to the MongoDB driver's connect() function, except for 4 mongoose-specific options explained below. So I think using discriminator yields better solution: Jun 22, 2021 · I have multiple games where each game has its own set of stats, as you saw on the original post. render(), can't believe node. model. 10. Let Aug 7, 2018 · First of all, I will give you a glimpse on our project: We have an application, which has two user roles: Merchant and buyer. What is Mongoose Connection?A Mongoose co Nov 29, 2019 · How do I set my database and collection using mongoose ? I am trying to connect to a mongodb atlas database using mongoose. I cannot lookup customfieldvalues. Click on the "Aggregations" tab in the left sidebar. You can connect to MongoDB with the mongoose. Schema. Sets the value of the option key. It’s responsible for: Specifying the connection URI (uniform resource identifier) of your MongoDB database. The question is, how may I join the collection users with the collection usersRole, and Feb 10, 2021 · mongoose only creates collections when first writing an model, and typegoose uses the class name (lower cased) as the model name and mongoose uses the model name as collection name (in plural if not already) if not provided otherwise --- you should maybe set the collection for your Metrics class to something different, because mongodb might use such an collection internally Jan 4, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Nov 24, 2022 · I have two collections Post (belongs to posts database) and User (belongs to account database). js. create() [mongoose] and model. Feb 19, 2020 · Yes you can reference a collection to another collection like the way you're doing, ideally that's how relationships between two collections are maintained in MongoDB, but you need to understand as MongoDB is schema free, there is no direct way to create/update/delete documents in second collection by creating/updating/deleting relative May 7, 2019 · You might handle this with a collection of users and another collection of phone numbers and to get all the phone numbers a user has you’ll need to join the data in both collections together. Jul 6, 2024 · Mongoose is a powerful and flexible Node. However, with NoSQL databases like MongoDB, joins are not an option, since they are, by definition, not To insert Multiple Documents to MongoDB using Mongoose, use Model. createConnection are all backed by an internal configurable connection pool defaulting to a maximum size of 5. model ( 'Blog' , blog) ; Apr 15, 2024 · In this article, we will explore how to remove documents using Node. Feb 18, 2025 · Creating multiple collections in MongoDB using Mongoose with Node. In the process of migrating my application code to async/await using node v8. then( => console. There are two options model. js is a tool with which each of your services communicates with the database, and you need to implement the SAGA pattern at the business logic level, this is a higher-level task. It optimizes resource utilization, handles connection pooling, and manages errors, facilitating efficient data operations. useDb('postsDB'); Only do this if you have a good reason too though, the more standard approach would be to use multiple collections in the same database. This tutorial describes how to use `mongoose. insert() [mongodb] which you can use. The mongoose Mar 16, 2021 · save the project into collection 'project_list' push the uuid of the new project to a client in the collection 'client_list' with transaction enabled, if anything goes wrong (such as the client id is given in the new project JSON object does not exist in the collection 'client_list'), then both step1 and step2 will be canceled. I want to make connection to both Primary (port 27031) and 1 Secondary (port 27032) and in express query either of them depending upon use case. 'debug': If true, prints the operations mongoose sends to MongoDB to the console. The Node. Hey folks! I have a question about whether it would be wiser to use multiple databases or multiple collections within a single database when designing for applications at scale. js application I get an empty array. in Other words, if you use Orchestration-based saga, you will need to implement business logic in one of the services, which will start a chain of calls to other services to save data and in case of errors Dec 11, 2024 · First, you write the collection name that you would like to join (movies) into the ‘from’ field, and write the fields of the local collection (genre list) and the fields of the “form collection” (type) in localField and foreignField, respectively, and in as write the output array field (movies). catch(err => console. Dec 30, 2023 · This establishes a single database connection which suffices in many applications. The mongoose Aug 12, 2019 · I get it now. My database is called "test_db" and collection name is "users" where woul Dec 30, 2023 · Overview. values. Sep 19, 2022 · The Mongoose Schema API Connection. js and mongoose and trying to access an existing collection in MongoDB Atlas named 'questions' inside a database called 'database' i was able to do that using the MongoDB native dr Apr 7, 2022 · Mongoose automatically changes this to the plural form, transforms it to lowercase, and uses that for the database collection name. You can access the default connection using mongoose. asPromise(); Mongoose doesn't allow to use multiple databases in single mongoose instance as the models are build on one connection. A merchant signs up and stores his trade info in his account. connect(DB_CONNECTION_STRING, { useNewUrlParser: true, useUnifiedTopology: true, useCreateIndex: true, useFindAndModify: false}) I'm new to backend development so sorry in advanced if this sounds stupid. connect(process. But if your joins have to be on different fields in subsequent collections, this may not work. Normally, the database connection uri has the structure like: I am creating a MERN stack application and have chosen to use mongoose to communicate with MongoDB Atlas. May 7, 2025 · I want to get access to all the collections of my MongoDB database. This is where tools like Mongoose and TypeScript come in handy. Typically, when working with Mongoose, you define a schema to structure your data before interacting with the database. My requirements to do join on these two collection. ts May 7, 2019 · Inside our grocerydb we will have both a collection for Products and a collection for Reviews. Mongoose Schema Before connecting and configuring our database we are going to create the necessary schemas. Connection to Multiple Databases. Aug 11, 2021 · For Example: Lets take the sample_analytics database within MongoDB as shown below. The new document will added in the collection as shown in the image 12 Jun 26, 2020 · Join Multiple Collections with Mongoose. we've tried to use createConnection() and openSet() in mongoose, but it was not the solution. connect or mongoose. js with Mongoose MongoDB is a flexible NoSQL database, and Node. Can anyone tell me how can I connect multiple databases in node js. Here is my code Sep 11, 2024 · I want to store books in a collection called books and users in a collection called users, but I don’t know how to do this in Mongoose. Feel free to download and see for yourself. connect('localhost',db); but it does not work I receive this error: Error: T Mar 17, 2025 · A Mongoose connection is a Node. In this tutorial we’ll show you a simple example of a one-to-many join using the popular Mongoose library which lets you work with a Mongo Database. If this issue arrises when you deploy it such as on Heroku. var array = [{ type: 'jelly bean' }, { type: 'snicke You can create a mongoUtil. This can be done by first connecting to the second database and using the callback function to access the requested collection. i have one database with name of Company and in this i have two columns name and DBname and i have multiple Companies databases now i want Jan 22, 2013 · I tried the selected answer but when querying on specific model object, it retrieves data of both schemas. It first imports the Mongoose library and defines the MongoDB connection URI. Defining the connection name if you have multiple databases. mongoose. This is best addressed using the Database Level Throughput option, which was previously discussed. js I've always used mongoose. I am using mongoose. Break models into domain-based collections based on relationships and data that‘s likely to be updated together. collections ) { mongoose Apr 22, 2012 · This is an old question, but it came up first for me in google results when searching "mongoose insert array of documents". May 26, 2020 · If a collection does not exist, MongoDB creates the collection when you first store data for that collection. Jun 21, 2024 · Creating multiple collections in MongoDB using Mongoose with Node. Mongoose, a powerful ODM (Object Data Modeling) library, simplifies the interaction between MongoDB and Node. connect() method that we used previously for the primary MongoDB connection: Nov 27, 2019 · Post above from RalphJS really helped, but it only was using one connection for everything. Together, they are a powerful combo for building modern web… Jul 17, 2021 · When connecting to mongodb via mongoose, if your mongodb uri doesn't contain any database name then it will connect to test database. log(err)) Then I have created a schema for one of the objects I want to store in the database. Apr 2, 2024 · This method allows us to establish separate connection pools each tailored to a specific use case or data access pattern, unlike the mongoose. MongoClient Feb 12, 2013 · A very modern approach to get list of all mongo databases using mongoose (version 6. id of the Mongoose API is used on the Connection objects. I'm having trouble switching connections and I'm afraid listing the details of my attempts/results would muddy up the question here. Thanks. createConnection. One reason is if you have multiple databases or multiple MongoDB clusters. getCollection is not a function. Let Sep 17, 2018 · Connect and share knowledge within a single location that is structured and easy to search. Let Sep 15, 2023 · Hi, basically I have a replica set with 3 nodes (1 Primary and 2 Secondaries). So you have to define your database name at the end of the mongodb connection uri and it will connect to that defined database. Let 6 days ago · Transactions in Mongoose are managed through sessions. This comprehensive guide covers schema design, connection management, and practical code examples for creating and interacting with various collections. The mongoose Oct 2, 2015 · Currently I have this code for my connection mongoose. Transactions let you execute multiple operations in isolation and potentially undo all the operations if one of them fails. Introduction. 2 now allows one to combine data from multiple collections May 20, 2024 · To retrieve data from two different collections in MongoDB using Node. Jun 25, 2024 · Creating multiple collections in MongoDB using Mongoose with Node. At best every time you'll need to use mongoose. Unfortunatley, the only way I know how to render the view is to call res. We have an accounts collection and a customers collection. Learn more about Teams Multiple populates - mongoosejs Mongoose. render() twice. const MongoClient = require( 'mongodb' ). Asking for help, clarification, or responding to other answers. You want to . Mongoose schemas support Nov 23, 2021 · Connect and share knowledge within a single location that is structured and easy to search. Mongoose allows for a straightforward and schema-based approach to managing MongoDB collections. collection('collectionB'). To use a single collection, you need to use Mongoose Discriminators. Provide details and share your research! But avoid …. connect()` function is the most common way to connect to MongoDB with Mongoose. json file is located. startSession(); // Using a custom connection const db = await mongoose. 每个连接，使用mongoose. At such times the default mongoose single connection no longer meets your needs. js application will use Mongoose Framework to connect to MongoDB API on Cosmos DB and create a collection of name Products. connect() but I understood that this basically "maps" that mongoose connection with the global connection, so what I'm trying to use is mongoose. Feb 6, 2021 · If they are multiple databases in the same server, you can use useDb. customfield in the customfield collection. May 9, 2023 · The following steps have to be followed to Join 2 Collections in MongoDB using the compass, Launch Compass and connect to your MongoDB instance. io. cluster 1 - mongoose. Prerequisites:Node Dec 14, 2024 · The Mongoose Schema API Connection. I created this project to identify a problem with NestJS, Mongoose and MongoDB. Each type is consisting of different existing fields (indexes), such an example: Type: Estate, Subtype: House other fields garage (Int) (index) bathroom (Int) (index) bedroom (Int) (index) building_size (Int) (index) land_size Apr 15, 2025 · A Mongoose connection is a Node. My MongoDB Database name is myWebsiteDB: myWebsiteDB has 2 collections: dinners and emails. The mongoose Feb 13, 2025 · MongoDB is a popular NoSQL database that offers flexibility and scalability, making it an excellent choice for modern applications. The connection is done using the connection string. Nov 14, 2022 · With the example I can create a model for each collection, but I can not connect to different databases. connect, and logs a success message if the connection is successful. js and Mongoose. Jul 9, 2015 · Depending which app sent the job, it needs to connect to the appropriate mongo database through mongoose. Aug 15, 2022 · I am have two clusters and I need to get data from both the clusters Db Collection. . , connection pool size, retry settings). We'll cover the various methods provided by Mongoose for removing documents including removing a single document, removing multiple documents, and removing all documents from a collection. This method pluralizes the name. toCollectionName method. When I run my application it starts fine and connects to both DB's successfully however I believe that mongoose is either getting overwritten or something because I might be able to do a findOne() command on primary but secondary fails or vice versa. Example: Apr 8, 2022 · How to fetch data from multiple collections in MongoDB by using a common field and sending data (in those fetched collections) using one response? Employee Scheema: const mongoose = require(" Nov 4, 2022 · I am getting errors while trying to connect multiple databases into nestjs framework. 9. Populate from two collections. js application using mongodb native driver. Jul 12, 2019 · In the app. log("Connection established")) . getCollection(collection_name) just above the listen part of code but console is saying mongoose. You can create a session using either the default Mongoose connection or a custom connection: // Using the default Mongoose connection const session = await mongoose. Once installed, setup a connection to your MongoDB database: Apr 23, 2016 · You are doing it the wrong way around. Issue at hand. Mongoose creates a default connection when you call mongoose. js + express + mongoose won't accomplish something Each connection, whether created with mongoose. like I have multiple records in social collections for the single user – Venkatesh Somu Jul 21, 2019 · So far we've seen how to connect to MongoDB using Mongoose's default connection. connect() method will give you the global database connection accessible throughout the app, you cannot switch the Oct 16, 2021 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Hope someone can clarify more about this. 1 const Blog = mongoose. collections, you might simply list them for ( collection in mongoose. 0. I have three collections, named employees, customfield. Then each DB connection gets imported respectively into their schema files, from which the schema files have module exports. js, we typically use the Mongoose library or the native MongoDB driver to establish a connection, query both collections and then combine or process the data as needed. 1, I am struggling to find an elegant way for the mongodb q Mar 24, 2025 · The Mongoose Schema API Connection. Can someone help? //employees Jun 5, 2021 · Multiple Mongoose Connection Mongoose default connection works for most apps but there are instances when you will want to connect to more than databases in your application. Let May 3, 2025 · The Mongoose find() method is one of the most widely used methods for querying MongoDB collections in Node. – Aug 14, 2024 · Best practices for using Mongoose with Azure Cosmos DB. Let Apr 26, 2025 · The Mongoose Schema API Connection. createConnection() is used. All the questions and answers I've found have the models and the connection objects in the same file, but in my project they are in different Aug 1, 2024 · The Mongoose Schema API Connection. I want to join customfield. Firstly, let's quickly see how you should connect to your MongoDB database in 2020 with Mongoose: mongoose. It provides a flexible and powerful way to fetch data from your MongoDB database. Aug 1, 2024 · To retrieve data from two different collections in MongoDB using Node. 1. I'd like to know if there's another solution, in my case I want to get recipes and authors from 2 different mongoDB collections but I can't do it with only 1 res. Our goal will be to create routes to create both Products and Product and Reviews, as well as ( here comes the join functionality ) a GET request that can retrieve a product along with the associated associated Review. Let’s expand upon our setup to include connecting to multiple databases. Here’s a step-by-step guide on how to create and manage m Sets the value of the option key. Basically 1 express app with multiple connections. const userDb = mongoose. Had to change 1 thing in model. g. collection. This guide will get you started using transactions with Mongoose. ObjectId, ref: 'userRoles', required: [true, 'Please Select a Role'] } This field will be responsible to save the role id, it’s a join field. vgzr fzek yilp iqyv zmpdp namhi cbrabpgiw ooiq oms qkvg

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