Mongoose filter array of objects. Nov 19, 2021 · I am new to MongoDB.

Mongoose filter array of objects I’d like to filter out the subdocuments in this nested array that have the field status: REMOVED, and then return the original document unchanged aside from the fi… Feb 19, 2023 · Hi All, I want to filter documents with elements in the array that must satisfy the condition (using find()). This function was available in Mongoose since its early versions, adapting and evolving over the years with JavaScript and Node. filter (). Jul 8, 2018 · I have the exact same issue as described in this thread (hence the similar title): Mongoose findOneAndUpdate -- updating an object inside an array of objects Given this model: const SavedFoodsSch Oct 20, 2021 · Filtering with an array of objects Regex in mongodb and mongoose Asked 3 years, 6 months ago Modified 3 years, 6 months ago Viewed 923 times Jun 24, 2021 · How can i filter 'array' of object ids inside of mongo document, so that it doesn't include "60ba4ca6f170dsfa234", and will update document. find({roomname:'room1'},'users'). You'll need to complete a few actions and gain 15 reputation points before being able to upvote. May 9, 2024 · 3. js, ejs and mongoose. Jun 28, 2022 · Find an object in nested array of object Working with Data aggregation Wai_Kun (Wai Kun) June 28, 2022, 10:30pm Use the $pull operator to remove all instances of the a value or values from an array that match a specified condition. getTeamsAggregatedByFilter( teamFilter ) // make an array of ObjectIds so we can filter for them. push Oct 16, 2020 · Learn how to filter elements from arrays in MongoDB by using the $elemMatch operator alongside find(), $match, and the $project and $filter functions. let idArray = [] Object. Is there a way to filter out unnecessary exercise objects already during query to mongoose? Pulls items from the array atomically. Model. Let's say I have an array inside documents called attributes: [ { attributes: [ { name: &quot;Cool&quot;, May 9, 2024 · How to search a value in an array of objects in MongoDB? There are some techniques to search for a value in an array of Objects by using find () method. let teams = await TeamMgmt. In Mongoose, how to filter an array of objects Asked 12 years, 4 months ago Modified 6 years, 9 months ago Viewed 38k times Jul 2, 2024 · Mongoose offers a wide array of advanced techniques to filter data, ensuring that you can extract exactly what you need with precision and performance. How can i do that? Specify array filters for update operations using `Bulk. I have the id of the collection where the array is located at. Jan 1, 2011 · How filter array of objects elements mongoose? Asked 8 years ago Modified 8 years ago Viewed 4k times 0 I needed to update an array element with dynamic key-value pairs. deleteMany() Model. As i had an object in the array, my solution was: (I was filtering only the active: true carts and products) Nice solution, avoids (even though I love aggregate and I think the aggregate approach is a great answer) Learn how to use an aggregation operator to return a subset of an array based on a specified condition. How can I pass an array of articles id’s to Articles collection, find necessary articles and return an array of only names to render? Learn about the $map aggregation operator, which applies an expression to each item in an array and returns an array with the applied results. In this tutorial, we’ve explored a variety of methods to achieve this, such as using query conditionals, logical operators, custom query helpers, population, and aggregation. This tutorial explores updating objects within a document’s array, highlighting the power and flexibility Mongoose offers with practical code examples. This guide aims to provide you with the knowledge to make full use of array types in your Mongoose schemas with a progressive step-by-step approach, enriched by real-world code examples. push Dec 30, 2023 · Mongoose, the popular ODM for MongoDB in Node. Jul 23, 2025 · Examples of Querying Array Elements in MongoDB Let’s demonstrate querying arrays using a blogPosts collection. To pull an item from an array, you can use the $pull operator along with the updateOne () or updateMany () method. I do have 2 questions 1-) Running the working example is returning the first object (where a user is below 18) instead I needed second objet (where all users are above 18) 2-) How efficient is this query? My collection has over 200k+ documents with each users field having 100+ users. Aug 31, 2021 · My document have field roomname and field users which is an array: ['name1', 'name2', 'name3', 'name4' ,'name5' ,'name6' ,'name7'] How can I get filtered array of users from 'name2' to 'name5'? I get from 'name1' to 'name7' array by coding : roommodel. Furthermore, we can query all documents where the city field inside the address field inside the student_detail field contains a specific value. This was the best solution for me. What's reputation and how do I get it? Instead, you can save this post to reference later. Apr 2, 2016 · I'm trying to query the property that is an array of both reference to another schema and some additional data. Equality is determined by casting the provided value to an embedded document and comparing using the Document. Whether it’s leveraging basic updates or orchestrating transactions, mastering these updates is essential for the modern developer working with complex data structures. The `updateOne` method updates a single document that meets the specified filter criteria, whereas the `updateMany` method modifies all documents that fulfill the same criteria. subdocs. populate("color") its output is [ { Say I have an array of objects, shown below, and I want to get only the objects that meet a certain condition (in this case have name be equal to A), how can I do that without using aggregation? Dec 30, 2023 · Mongoose’s Model. find(queryobject) returns all collections based on query criteria object Oct 26, 2020 · MongoDB Aggregation Pipeline filter based on properties of child objects within array Asked 5 years ago Modified 4 years, 1 month ago Viewed 3k times Nov 9, 2022 · I am trying to search using node. Why Use Mongoose Aggregate () Over Regular Queries? The aggregate() method is particularly useful when we need to perform operations that are too complex for simple queries You have an array of arrays rather than an array of objects the ‘Depth’ equates to the position in the array. array. populate () method. find() Model. findByIdAndRemove() Model. Example: doc. This article will explore various methods to achieve this task, covering concepts like array filters, positional operators, and update operators. By mapping the update object to new keys containing the $ update operator, I am no longer bound to know the updated keys of the array element and instead assemble a new update object on the fly. It allows you to retrieve a set of documents that match given criteria. Take a note on expected output all properties of particular document must return only the variant array of object Jun 25, 2019 · Many Mongoose model functions, like find(), return a Mongoose query. Jul 13, 2018 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. collection. find({"color":"639b75a799cf2ed9eb2802ec"}). May 20, 2013 · I have a Mongoose schema with an array lists of objects that consist of a reference to another collection and a nested array of numbers: var Schema, exports, mongoose, schema; mongoose = requi Sep 11, 2022 · I would like to check if a field is not present in an array of objects. then(res=>{ console. Jan 16, 2020 · This tutorial will show you how to use mongoose to find in an array of objects. MongoDB Manual code examples for how to query an array of documents, including nested or embedded documents. Updating the property of an object within such an array can be a frequent requirement in many applications. js and MongoDB installed. Apr 21, 2022 · You didnt get it. Indian Cuisine and Bollywood Indian Festival and Cricket Yoga Apr 30, 2022 · failed because of dotted notation comp_users. Oct 19, 2011 · For me, on Mongo 6, this format always returns all documents (even those that shouldn't match) if all documents have the array field, and always returns no documents if at least some of the documents do not have the array field. Nov 19, 2021 · I am new to MongoDB. I tryed to use instead of dotted notation comp_users. We would like to show you a description here but the site won’t allow us. collection array of objects I have th id of the collection and i need to find any match inside the array of objects, to avoid duplicates. See Query. fields «String|Object|Array [String]|Array [Object]» the field (s) to unwind, either as field names or as objects with options. for example the following query on variations collection gets correct color object then populates it. equals() function. Select Jun 19, 2023 · When working with Mongoose, a powerful MongoDB object modeling tool, it’s essential to understand different filtering options for querying documents within a specific date range. Before we start writing code, ensure you have Node. You can reshape at the client (fast) or with an aggregation based projection if you really want it put back into nested objects by the server. findByIdAndDelete() Model. Thank you! { "_id" : ObjectId (&q Aug 9, 2021 · How to filter an array of objects in mongoose by date field only selecting the most recent date Asked 3 years, 3 months ago Modified 3 years, 3 months ago Viewed 279 times Jul 23, 2025 · In MongoDB, it's common to store complex data structures within documents, including arrays of objects. The query needs to calculate the difference between two dates and return only documents where the difference is less than or equal 7 days. This should result in the cards array in the User document containing full Card document details for each reference, not just the May 31, 2023 · Mongoose Filter & Sort Array of Objects Using Aggregate Asked 2 years ago Modified 2 years ago Viewed 100 times May 16, 2024 · In MongoDB/Mongoose, updating deeply nested arrays can be challenging due to the nested structure. I am struggling to get what I expect to see when querying an array using Mongoose. Mongoose applies defaults recursively, which means there's a nice workaround if you want to make sure Mongoose applies subdocument defaults: make the subdocument path default to an empty object. find(conditions, [projection], [options], [callback]) In the above syntax: conditions: Specifies the query conditions (like filters) to match documents. Jul 31, 2021 · If you work with javascript, the chances of you are using array methods like map, filter and reducer Tagged with mongodb, javascript. In this blog post, we will explore the top 10 modern and advanced methods for filtering data using Mongoose. MongooseArray. $pop () Pops the array atomically at most one time per document save (). populate() process that many are used to. Unlike relational databases, this characteristic typically allows each entity's entire data structure to exist in one place as a document. findOne() Model. const query = Character. findOne({ age: { $lt: 'not a number' } }); Query an Array with Compound Filter Conditions on the Array Elements The following example queries for documents where the dim_cm array contains elements that in some combination satisfy the query conditions; e. Next Article: Mongoose: How to turn a document into a plain JS object Previous Article: Mongoose: How to remove an object from an array Series: Mongoose. map( function ( key, index Query an Array with Compound Filter Conditions on the Array Elements The following example queries for documents where the dim_cm array contains elements that in some combination satisfy the query conditions; e. Feb 28, 2023 · I apologize for my mistake, because my subsequent tests use more complex data structures, and part of the code only performs simple tests on local data and specific May 6, 2020 · This article explains how to filter array elements in MongoDB. findOne () searching by id and then filtering using Array. Mongoose is a widely used ODM (Object Data Modeling) library designed for MongoDB and Node. Documents better represent "real-world" objects and how developers think about such entities. , one element can satisfy the greater than 15 condition and another element can satisfy the less than 20 condition, or a single Mongoose: how to filter an array of objects inside an object Asked 4 years, 11 months ago Modified 4 years, 11 months ago Viewed 1k times [options. pull('tag 1', 'tag 2') To remove a document from a subdocument array we may pass an object with a matching _id. js May 10, 2021 · I have a collection with a nested array of subdocuments. So you have to use the positional-operator $ in your second object. { id: 1, entitlements:[{ purchasedAt: 2022-07-20, expiresAt: 2022-07-27 }] }, { id: 2, entitlements:[{ purchasedAt Jul 23, 2025 · In Mongoose, pulling an item from an array can be done using several methods. Adding the issue link directly into the answer content. In our example collection, every document in the collection student includes a deeply nested object with fields for student_detail and address. When writing code Oct 1, 2025 · The find () method in Mongoose is used to query documents from a collection. award':"Ballon d'Or"} I would like to only return the object that matches Ballon d'Or only in the awards array If Mongoose fails to cast the filter to your schema, your query will throw a CastError. js Tutorials Node. db. Apr 10, 2022 · Filter inner documents with array of objects in MongoDB Asked 2 years, 9 months ago Modified 2 years, 9 months ago Viewed 102 times Dec 26, 2012 · How to search in array of object in mongodb Asked 12 years, 10 months ago Modified 2 years, 9 months ago Viewed 350k times Dec 28, 2022 · How to filter record from array of object in mongoose Asked 2 years, 2 months ago Modified 2 years, 2 months ago Viewed 357 times Dec 31, 2023 · Populating nested arrays effectively can significantly enhance data retrieval and the quality of your applications. Upvoting indicates when questions and answers are useful. All the filter parameters are working perfectly but only categoryIds is not (stored as a collection of ObjectIDs in the mongodb document, refe Feb 28, 2022 · This method returns the expected output, now my question is there any other better approach that return the expected output. This article will explore various approaches to update deeply nested arrays efficiently using both MongoDB queries and Mongoose methods. To filter a mongoose schema array of objects, you can use the `filter ()` method. dg_user in array filter. Here is my model: ``` const mongoose = require ('mongoose') const Schema = mongoose. Query Nested Object of Multiple Levels Moreover, we can also query by deeply nested array objects. pull(36) doc. $. Model: The Mongoose model representing your MongoDB collection. Sep 8, 2021 · I have the collection below and would like to return all matches where firstParticipant. I am not 100% why this syntax works because it is still just an array of objects, formatted like before, but I guess there is some stuff mongoose does, that is opaque to me. So direct expansion on an array would be welcomed, as would a "query" to filter results. May 22, 2020 · Mongoose arrays supports arrays of primitives and arrays of subdocuments. projection: Optional. Both of those would be a lot more aligned with the mongoose . Pulls items from the array atomically. If passing a string, prefixing the field name with '$' is optional. Jul 8, 2020 · mongoose filter nested array of object by value in the object Asked 4 years, 8 months ago Modified 4 years, 8 months ago Viewed 386 times Apr 27, 2024 · When using Mongoose's populate () method with an array of ObjectIds in the User schema, I expect that each ObjectId in the cards array should be populated with the corresponding Card document from the database. Each of these functions returns a mongoose Query object. deleteOne() Model. address = 789 how to make this query with the mongoose and return only the objects that match the filter? Dec 27, 2018 · The way I solved this was to return all exercise array of a particular user from model. We'll provide detailed examples and Mar 5, 2015 · The second object tells you which fields of the document to return. In this blog Apr 11, 2020 · How to filter nested objects in array of a document in mongoose? Asked 5 years, 1 month ago Modified 5 years, 1 month ago Viewed 901 times The below example shows an array filter where we get the list of documents where the value of a nested array element i. lean] «Object» if truthy, mongoose will return the document as a plain JavaScript object rather than a mongoose document. find. If you pass an element that has a toString() function, Mongoose will call it, unless the element is an array or the toString() function is strictly equal to Object. log(res) }) When there is less number of users like this one then there is a way: let . findOneAndUpdate() Model. Aug 26, 2022 · Thank you so much for the solution. Basically, Checks nested object array with matched condition, returns parent full document. Mar 16, 2022 · I fixed it like this. The Mongoose Query class provides a chaining interface for finding, updating, and deleting documents. findOneAndDelete() Model. e category [] is equal to the value specified. But the second argument works only with primitive types. address or secondParticipant. I tried many ways, including $elemMatch, but still not Mongoose models provide several static helper functions for CRUD operations. prototype. This is a very clean and updated method, if you don't mind I'd like to ask a few question, if I have an array of referenced ObjectId 's like the above (say, I have projects, and I assigned an array of projects to certain users with the project_id referenced on the user model), if I delete a project, how do I make sure the id is deleted from the array referenced from the user model ? Thanks mat. js, offering robust capabilities for defining schemas, including comprehensive support for managing geospatial Jun 23, 2022 · MongoDB Aggregation: Filter array with _id as string by ObjectId Asked 2 years, 9 months ago Modified 2 years, 9 months ago Viewed 2k times Jul 23, 2025 · Conclusion Overall, updating objects within a document's array in MongoDB requires careful consideration to ensure that only the intended objects are modified. In following example, I’d like to have document 1, but not document 2. find() function is quintessential for querying documents from a MongoDB database using the Mongoose ORM in a Node. But this approach feels wrong to me because I have to load unnecessary data in memory. Oct 20, 2024 · In the array id’s of articles he added to favourites. arrayFilters ()` to determine which array elements to modify in MongoDB. pull(ObjectId) doc. dg_use as suggested still getting failure. MongoDB Manual: How to query or select on embedded or nested documents, subdocuments and fields. A user can have many rooms associated with his/her account. I am currently using this moongose filter {'awards. Something like this : this one should be f Apr 9, 2021 · Hello @Dev_Ops, you need to use arrayFilters option of the update operation to update specific element of an array based upon a condition matching the array element’s field (in your case the userId field). js, offers a comprehensive set of features to define and manipulate such arrays using the Array schema type. , one element can satisfy the greater than 15 condition and another element can satisfy the less than 20 condition, or a single Dec 31, 2023 · Let’s find Mongo queries to find nested array JSON based on filter condition # Mongodb Query find an object based on field matching in array of objects Find the all users whose roles contain name of admin. doc. lean() and the Mongoose lean tutorial. In this article, we will explore how to search through arrays of objects in MongoDB using a variety of techniques from basic to complex. findByIdAndUpdate() Model. By understanding and leveraging the population capabilities of Mongoose, you are well-equipped to handle complex data relations with ease and efficiency. This is what Document#populate() and Query#populate() use to populate documents. pull({ _id: 'someId' }) doc. For better clarification, here's the schema: var orderSchema = new Schema({ For anyone new to MongoDB and isn't familiar with constructing MongoDB JSON query objects inside the find* methods, you can leverage the mongoose Query Builders. I would like to know how can we filter/retrive an object inside an array of multiple objects based on certain fields? for eg. keys( teams ). findById() Model. Schema; const workoutSchema = new Schema ( { date: String, title… Dec 31, 2023 · Applying the best practices outlined will help in crafting well-constructed, performance-efficient database queries. Moreover thank you in advance, and as I am new to nosql database so I am curious to learn from the community. I want to retrive only Object: 0 from Transaction array referencing fields like ProviderName, TimeStamp. replaceOne() Model Dec 31, 2023 · Mongoose ORM simplifies MongoDB interactions. For example, the following code filters the `items` array of the `product` document to only include products with a price of more than $100: Dec 30, 2023 · Conclusion The ability to filter documents by multiple fields in Mongoose is essential for building sophisticated data-driven applications. await Variation. The "$" is a placeholder for the array-entry which were matched by the first Dec 30, 2023 · Removing an object from an array field in Mongoose can vary from simple single-line commands to more intricate operations depending on the data structure and requirements. The room objects are stored in an array attached to th It seems mongoose takes string representation of ObjectId as input and converts it internally depending on the model properties. Jul 23, 2025 · Model. g. It returns a Mongoose Query object, which supports chaining additional operations like sorting, limiting, and filtering. The collection contains fields: _id, title, and comments. toString(). Dec 30, 2023 · In summary, Mongoose provides a rich set of methods to handle nested arrays. But you want only a specific array entry. findOneAndReplace() Model. Jul 13, 2022 · How to filter mongodb documents by array of objects Asked 2 years, 9 months ago Modified 2 years, 9 months ago Viewed 161 times I have a collection that I’d like to query by an array of objects. js environment. See examples from documentation: Update Specific Elements of an Array of Documents Also, see these posts with similar questions and answers: This post is from this site: Nested arrays how Jul 23, 2025 · Defining an object in an array in a Mongoose schema with a 2D geo index is a common requirement for applications that deal with geospatial data. Syntax: Model. The comments field is an array of objects, each containing user details. Oct 21, 2010 · 32 Better you can query in matching array element using $slice is it helpful to returning the significant object in an array. js standards, including the incorporation of If we have one or many mongoose documents or even plain objects (like mapReduce output), we may populate them using the Model. aggregate ( [<pipeline>]); Parameters: pipeline: It is used to specify the pipeline array of objects. Advanced Use Of Expressions For Array Processing One of the most compelling aspects of MongoDB is the ability to embed arrays within documents. Here's how you can work with Mongoose arrays effectively. Below are the data or records inserted into the document of blogPosts collections. However, this query will return the whole array even when there is only one matching entry. Oct 20, 2019 · I would like to know how to retrieve documents in MongoDB using mongoose that all have the value true for the "done" property inside an array of objects. dnwx qxxfm jidowmg gucarrd iihxyp cxi bjtzdh jqobih jmsf qthl ukqx tzyf omgaep wcvc anpmvgz