Mongoose sort array of objects. I tried but it is not changing anything.
Mongoose sort array of objects Nov 9, 2012 · Why not sort by _id. handle": 1}, {unique: true}); Please read the MongoDB documentation about Compound Indexes for more detail. May 12, 2018 · 3 This question already has answers here: How to sort array inside collection record in MongoDB? (16 answers) MongoDB sort documents by array elements (1 answer) Jan 17, 2023 · If you look at the $sort documentation you will see that this stage sorts top level documents. Each of these functions returns a mongoose Query object. Do not reference the containing array Jul 23, 2025 · In Mongoose, pulling an item from an array can be done using several methods. You do not need to set this parameter to ensure Mongoose handles your query projection. I am trying to slice it by adding this stage at the end of the pipeline: let limit = 5; let skip = limit * 1; const page_limit_stag May 16, 2017 · You call the index method on your Schema object to do that as shown here. sortByCount(expression) Parameters: This method accepts a single parameter as mentioned above and described below: expression: It is used to specify the name of 21 If it is an array of objects and you want to use just single object field, ie: Jan 1, 2022 · Here's an example of storing an array of objects in a Mongoose field with a real-world example. 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. Through proper technique, one can easily order queries to most effectively serve their application’s needs. The method works correctly when the field is a single ObjectId, but fails to populate properly when the field is an array of Dec 31, 2016 · Mongoose, check if value exists in an array of objects Asked 8 years, 10 months ago Modified 2 years, 9 months ago Viewed 56k times If the value is a document, MongoDB determines that the document is a duplicate if an existing document in the array matches the to-be-added document exactly; i. Starting from the fundamentals, we have progressed to more sophisticated methods, topping off with examples that For making an array in schema we have to make one more schema as monetizationSchema which is used to store one data at a time and another as blogSchema we have monetization field containing monetizationSchema in square brackets as an array. deleteMany() Model. "Agenda":[ { "_id":"df12a76a-1e9f-4247-b48d Mongoose models provide several static helper functions for CRUD operations. findByIdAndDelete() Model. after this you will have to call the save () method. Dec 30, 2023 · Mongoose, the popular ODM for MongoDB in Node. find() Model. I have documents like { "_id:" Feb 28, 2022 · so that mean no way to sort by a property in array that match a condition? @turivishal May 31, 2023 · Mongoose Filter & Sort Array of Objects Using Aggregate Asked 2 years ago Modified 2 years ago Viewed 100 times For <sort specification>: To sort array elements that are not documents, or if the array elements are documents, to sort by the whole documents, specify 1 for ascending or -1 for descending. Nov 14, 2022 · I guess that other collection doesn’t matter I just want to unwind a field contains array of objects without duplicating the main collection but for your order I’m going to share with you 1 - Sample of other collection : { _id: new ObjectId("62cd33dda9b59d77cffef126"), sn: 'xxx', terminalId: 'xxx', merchantId: 'xxx', merchantName: 'xxx', networkType: '', binded: true, longitude: 'xx I currently have some documents of items for dynamic forms. 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. Apr 2, 2021 · When trying to update an array of objects, using mongoose, you will have to tell MongoDB that there are pending changes by using the markModified (path) method. [options. Next, we will discuss the method to read this collection. When retrieved to the front-end with mongoose and graphql, using . { field: 1 } or { field: -1 }. 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 Jan 30, 2020 · The query part contains an array of objects (documents). Jump to the Sorting option you need: In ascending order In descending order With multiple fields With the limit () method With the skip () method Metadata With an index Sorting in ascending order In this example, I use the “make” text field to obtain the Jan 19, 2015 · sort operator when sorting docs by array field, does the following: When sorting descending, it takes the biggest element from each array and compares with other When sorting ascending , it takes the smallest element from each array and compares with other These are used only to sort the documents, so thats why the order inside the document is the same With arrays, a less-than comparison or an Learn about the $map aggregation operator, which applies an expression to each item in an array and returns an array with the applied results. For your case it would be something like: FieldGroupsSchema. options: (Optional) Additional options such as sort, skip, and others. Learn More For additional examples on querying arrays, see: Query an Array Query an Array of Embedded Documents For additional examples on querying, see Query Documents. equals() function. The first four bytes of the Object id is a timestamp, so should serve your purpose. Syntax: aggregate(). For example, a list of data in the frontend contains ways to sort the data based on a given column. js standards, including the incorporation of If the array elements are documents, you can sort by a document field. projection: (Optional) An object or string specifying the fields to return. findByIdAndRemove() Model. toString(). Here is a sample of what is this array looks like and what I want to do with it. To pull an item from an array, you can use the $pull operator along with the updateOne () or updateMany () method. Compound Sorting: Multi-Field Ordering Compound sorting allows you to sort by multiple fields, providing a fine-grained control over the order of your results. You can also clean up or project the foreign records with additional stage s, as indicated by the comment above. Below are 3 samples. Mar 14, 2020 · This can help people facing the issue withArray of Objects in Mongoose Schema: To ensure error-proof handling of arrays of objects in Mongoose schemas, define each field with its appropriate type and default value. $pop () Pops the array atomically at most one time per document save (). { "_id" : ObjectId ("610024d989c5b829e72940c5"), "firstname" : "Christophe", "lastname Jul 26, 2021 · Here issue i'm facing is with sorting. Advanced Use Of Expressions For Array Processing One of the most compelling aspects of MongoDB is the ability to embed arrays within documents. the existing document has the exact same fields and values and the fields are in the same order. Here we took a blog post with an array of comments. Apr 27, 2024 · I am developing an application using NestJS and Mongoose and have encountered a problem when using the populate() method in a schema that contains an array of ObjectIds. Jul 27, 2021 · I want to find a brand and then sort the product associated with the brand in ascending and descending order on the basis of price. findById() Model. Let's say you are creating a blog website, and you have a schema for a "Post" collection that has a field called "comments," which is an array of objects, each object containing properties such as "text", "author" and "date". pull({ _id: 'someId' }) doc. In Mongoose, how to filter an array of objects Asked 12 years, 4 months ago Modified 6 years, 9 months ago Viewed 38k times Dec 30, 2023 · Model. findOneAndUpdate() Model. Sep 8, 2022 · Sorting data is an essential task in applications. Jul 2, 2024 · This blog explores ten advanced techniques for sorting data with Mongoose, elevating your data querying capabilities to new heights. Dec 29, 2022 · Reading more carefully, it looks like the sort findOption is only for sorting the target documents themselves - not the target documents’ embedded documents array. Feb 26, 2024 · To update the value of an object in a deeply nested array in Mongoose, you can use the positional $ operator combined with the dot notation. sort({createdAt: 1}); also you can use " asc ", " ascending " instead of 1. See Query. Unlike relational databases, this characteristic typically allows each entity's entire data structure to exist in one place as a document. In some cases, the operators are specific to array fields. 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. 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. sort () on the array throws an error. 1. so that test2 appears above test1. Here's an example: fields «String|Object|Array [String]|Array [Object]» the field (s) to unwind, either as field names or as objects with options. This tutorial explores updating objects within a document’s array, highlighting the power and flexibility Mongoose offers with practical code examples. When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. I would like to sort my results by notifications date and it doesn't wo Dec 30, 2023 · Mongoose’s Model. Unlike document arrays, Mongoose 5 does not convert an objects in schemas into nested schemas. if two documents have the same firstName mongodb will check there lastName example: given the following documents Feb 11, 2018 · A mongodb Document contains an array. "Cookies" are small files that enable us to store information while you visit one of our websites. If true, mongoose doesn't add an _id field to the document. Nov 4, 2022 · Mongoose how to sort by date which is in array of objects of a field Asked 2 years, 9 months ago Modified 2 years, 9 months ago Viewed 213 times I'm looking for a way to sort a nested array of objects. currently if userId: 2 has latest updated date then it is coming first. sortByCount(expression) Parameters: This method accepts a single parameter as mentioned above and described below: expression: It is used to specify the name of 21 If it is an array of objects and you want to use just single object field, ie: Jan 19, 2015 · sort operator when sorting docs by array field, does the following: When sorting descending, it takes the biggest element from each array and compares with other When sorting ascending , it takes the smallest element from each array and compares with other These are used only to sort the documents, so thats why the order inside the document is the same With arrays, a less-than comparison or an Learn about the $map aggregation operator, which applies an expression to each item in an array and returns an array with the applied results. const childSchema = new Schema({ name: 'string' }); const parentSchema = new Schema({ // Array of subdocuments children: [childSchema], // Single nested subdocuments child Jun 12, 2020 · I'm new with NodeJS and MongoDB and I encounter an issue when I want to execute a Find() query with a Sort() using Mongoose. Nov 10, 2022 · How to sort the content of an array of objects inside an array of object with Mongoose Asked 2 years, 8 months ago Modified 2 years, 8 months ago Viewed 62 times Jan 12, 2018 · mongoose sort by value of multiple objects in array Asked 6 years, 11 months ago Modified 6 years, 11 months ago Viewed 987 times Oct 1, 2025 · The find () method in Mongoose is used to query documents from a collection. aggregate ( [<pipeline>]); Parameters: pipeline: It is used to specify the pipeline array of objects. ". Dec 30, 2023 · This tutorial explains the steps necessary to push an object to an array within a document using Mongoose, the popular MongoDB object data modeling (ODM) library for Node. lean() and the Mongoose lean tutorial. Parameters doc «Object» values for initial set optional « [fields]» object containing the fields that were selected in the query which returned this document. (API pass in Dec 21, 2019 · You have to use aggregation to sort the sub-documents in an array - sort by the sub-document's field. Sep 4, 2021 · Your example does not show the case of sorting with multiple fields sort({firstName: -1, lastName:-1 ,email:-1,createdAt:-1, updatedAt:-1 }) means that mongodb will sort in descending order according to the firstName. Throughout this guide, I will be assuming that you have a Mar 24, 2021 · NestJS/Mongoose - Create an Array of Object with reference to another Schema Asked 4 years, 8 months ago Modified 2 years, 11 months ago Viewed 26k times Model() Parameters: doc «Object» values for initial set [fields] «Object» optional object containing the fields that were selected in the query which returned this document. Oct 10, 2015 · 46 Another way to push items into array using Mongoose is- $addToSet, if you want only unique items to be pushed into array. Model. find() function is quintessential for querying documents from a MongoDB database using the Mongoose ORM in a Node. imagine having an array Agenda that holds multiple AgendaItem objects and the user is free to reorder this array by dragging and dropping any agendaItem to any position. Seamlessly navigate the intricacies of data path «String|Object|Array» either the path to populate or an object specifying all parameters, or either an array of those [select] «Object|String» Field selection for the population query Feb 16, 2016 · Really unclear as to your intent. It allows you to retrieve a set of documents that match given criteria. how can I sort an embedded array in a mongoose/mongo doc I have a data structure like this { _id: 123242353463484, name: list_one, queue: [ { _id: 121324124235235235 order: 0 }, { _id: 1213241242asdfvr235 order: 2 }, { _id: 1aweed1242asdfvr235 order: 1 } ] } when I query this doc, how can I get the queue sorted by the order field? Jul 13, 2015 · Other solutions are possible using either . Dec 23, 2019 · Please help to make query in mongodb. aggregate() to sort the array and/or "re-casting" to mongoose objects after you have done that operation or after doing your own . var childSchema = new Schema({ name: 'string' }); var parentSchema = new Schema({ // Array of subdocuments children: [childSchema], // Single nested subdocuments. ” This book is your passport to unlocking MongoDB’s full potential, whether you’re a beginner or an experienced enthusiast. Specify the field name and a sort direction, ascending (1), or descending (-1 ). Mongoose has two distinct notions of subdocuments: arrays of subdocuments and single nested subdocuments. args, which contains the fields from the record that the body function takes as parameter. projection: Optional. When I want to list all the documents, how can I do sorting based on the dynamic fields? For example, from UI side we can sort by First Name, or Middle Name dynamically but the sorting is applied on the related value’s field. What I understand is that you want the sort the array invoices within the top level documents. Jan 3, 2022 · To store an array of objects in a Mongoose field, you can define the field as an array of a specific sub-schema. When writing code Jul 23, 2025 · Model. Pulls items from the array atomically. js. "I have an array that contains multiple objects in it. Inherits: «Document» Applying operators to an array MongoDB provides several aggregate operators that can be useful when working with arrays in your aggregate statements. In Mongoose, this means you can nest schemas in other schemas. For example, the following query finds shoes with sizes greater than 9 and sorts the results by size in ascending order: Is it possible to populate nested arrays of object ids while preserving order? I understand that lookup is essentially random but is there a way to use the initial array of object ids to set the order for the populated ids after the lookups? Nov 2, 2022 · Or you can modify your update operation for the Notification model so that it already sorts, the messages by their createdAt, in descending order and you don't have to perform the sorting while fetching the notification using find method. [skipId=false] «Boolean» optional boolean. . Select mongoose nested schemas for multiple array of objectsI am trying to build a rest api with node, express and mongodb Jul 29, 2021 · Hi There, I need to sort documents by an array field containing boolean values. Here's a basic example: Nov 26, 2020 · MongoDB sort () method usage This section will cover how the sort () method can be used to carry out different sorting operations. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. find(). Model() Parameters: doc «Object» values for initial set [fields] «Object» optional object containing the fields that were selected in the query which returned this document. i need to sort record only on userId = 1 from child array. Also, you might want to sort the data in ascending or descending order. deleteOne() Model. May 27, 2022 · this is my sample data in this I have a userId and a array "watchHistory", "watchHistory" array contains the list of videos that is watched by the user : { "_id Apr 28, 2025 · The Aggregate sortByCount () method of the Mongoose API is used for performing aggregation tasks. The catch here is to match all objects in the ObjectId array (foreign _id that is in local field/prop products). The dataValues property stores the array of dynamic fields and its value. js, offers a comprehensive set of features to define and manipulate such arrays using the Array schema type. In the below example, nested is a nested path rather than a subdocument. You'll also get tips on how to optimize your schema for performance and scalability. pull(ObjectId) doc. js environment. Example. as i need to consider updatedDate of userId:1 In this tutorial, you will learn how to sort an array of objects in JavaScript using the sort() method of the Array object. See the answer with the aggregation in this post: How to sort sub-documents in the array field?. This function was available in Mongoose since its early versions, adapting and evolving over the years with JavaScript and Node. It returns a Mongoose Query object, which supports chaining additional operations like sorting, limiting, and filtering. e. It can be implemented in various ways, like passing a string, an object, or a 2D array of Strings or objects. Documents better represent "real-world" objects and how developers think about such entities. Learn how to use the merge aggregation stage to output pipeline results to a collection. Nov 19, 2012 · 3 In order to sort array, follow these steps: 1) use unwind to iterate through array 2) sort array 3) use group to merge objects of array into one array 4) then project other fields Query Jun 7, 2022 · How to "sort" nested object array on MongoDB, so all items with a specific value are the firsts? Asked 3 years, 4 months ago Modified 3 years, 4 months ago Viewed 934 times May 28, 2022 · Hello guys! I am stuck here trying to find the best approach to reorder an array of objects. Jan 16, 2020 · This tutorial will show you how to use mongoose to find in an array of objects. So, If we want to sort documents above by parts named “Memory” by field size, then here comes the mongodb aggregator. 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 In Mongoose, this means you can nest schemas in other schemas. Model: The Mongoose model representing your MongoDB collection. sort() on the plain object. Example: doc. findByIdAndUpdate() Model. Cannot assign to read only property '1' of object ' [ob. Okay, where? Is it in a text file as a string in JSON format? Have you created this object in memory? Is this the result of some other function? Then of course what do you intend to do for storage? Are these meant to be separate documents? Are these instead members of an array contained in a single Learn how to use the merge aggregation stage to output pipeline results to a collection. Apr 26, 2021 · sort () can't take arrays it either takes string or an object const posts = await Post. Dec 26, 2018 · I want to ask your thoughts about best practice to sort objects on expressjs + mongodb (mongoose) web apps. The information does not usually directly identify @KennyWorden the populate method from mongoose simulate a join in traditional relational databases. For making an array in schema we have to make one more schema as monetizationSchema which is used to store one data at a time and another as blogSchema we have monetization field containing monetizationSchema in square brackets as an array. Syntax: Model. replaceOne() Model Subdocuments are documents embedded in other documents. Learn how to create a mongoose schema array of objects with this step-by-step guide. Mar 14, 2017 · The returned value is an array containing an object that contains all individual objects within 'Items', but the original output I mentioned in my question, was returning an object pointing to an array containing individual objects within 'Items', how do I edit your answer to change it to that? Apr 28, 2025 · The Mongoose Query API sort () method is used to sort out the documents, from a collection, using the MongoDB query system. fields «String|Object|Array [String]|Array [Object]» the field (s) to unwind, either as field names or as objects with options. defaults=true] «Boolean» if false, skip Jul 12, 2025 · The $addToSet operator in MongoDB is used to add a value to an array and if the value already exists in the array then this operator will do nothing. Nov 20, 2023 · Custom sorting on nested fields with array of objects Working with Data node-js, aggregation, queries Ekene_Samson (Ekene Samson) November 20, 2023, 8:30pm MongooseArray. In Mongoose, how to filter an array of objects Asked 12 years, 4 months ago Modified 6 years, 9 months ago Viewed 38k times Aug 9, 2021 · I have an aggregate query that returns an array of objects. Yes! All three documents are inserted into the collection. So in this case the populate will replace the friends array with an array of Users documents. Currently my data is stored in this form (if I may use set builder notation for simplicity) { character, { enemy1, enemy2, enemy3 Dec 31, 2023 · Mongoose ORM simplifies MongoDB interactions. is it possible with mongoose or what else code i must add? Oct 26, 2020 · sort in nested object array mongoose Asked 4 years, 9 months ago Modified 4 years, 9 months ago Viewed 815 times Feb 24, 2021 · Mongoose - How to sort a query based on a populated field Working with Data Node. Starting from the fundamentals, we have progressed to more sophisticated methods, topping off with examples that Dec 30, 2023 · In this tutorial, we will cover how you can implement ascending and descending sort operations on your dataset using Mongoose and dive into more advanced scenarios to showcase how sorting can be used effectively. prototype. findOneAndReplace() Model. callback: (Optional) A function to execute if not using promises. Mar 29, 2019 · Recently I’ve struggle to find a way to sort those document list by nested array of object item, in this case, certain item in parts array. doc. Parameters [pipeline] «Array» aggregation pipeline as an array of objects Dec 30, 2023 · This level of abstraction allows quick adjustments and viewing sorting as a manipulable object rather than hardcoded instructions, augmenting both flexibility and maintainability. Let say my Product model has four attributes: May 31, 2017 · How sort array of objects in collection MongoDB? [duplicate] Asked 7 years, 8 months ago Modified 7 years, 8 months ago Viewed 2k times Learn how to use an aggregation operator to return a subset of an array based on a specified condition. Let say my Product model has four attributes: Learn how to use an aggregation operator to return a subset of an array based on a specified condition. The following example returns documents that include a new array field, crew, which combines values from the directors and writers fields: MongoDB for Jobseekers Book If you’re fascinated by the intricacies of MongoDB and yearn to explore its limitless possibilities further, I invite you to delve into my comprehensive book, “ MongoDB for Jobseekers. My question is: How can I edit my mongoose query to return objects inside Items array sorted in descending order based on createdAt property? i. I want mongo query in which sort array objects using some expression. If passing a string, prefixing the field name with '$' is optional. Before we start writing code, ensure you have Node. $push operator simply adds the object to array whether or not the object is already present, while $addToSet does that only if the object is not present in the array so as not to incorporate duplicacy. js Frameworks queries, mongoose-odm We may populate a single document, multiple documents, a plain object, multiple plain objects, or all objects returned from a query. index({"shop": 1, "fields. This tutorial shows you how to sort a JavaScript array of objects by a property value, independently of the property’s type. [options] «Object» optional object containing the options for the document. Both queries include the document with an _id of 4, and omit the document with an _id of 5 because the product is "xyz". The $addToSet operator appends the whole array as a single element if the value is an array. array. Let’s execute this route using the postman tool. Let's look at some examples. Also take note this isn’t my actual data - the actual data is named differently and has many more dimensions but this is just a simplified form of it (with different names too - so it may seem pretty dumb). To sort the whole array by value, or to sort by array elements that are not documents, identify the input array and specify 1 for an ascending sort or -1 for descending sort in the sortBy parameter. Feb 9, 2016 · body, which is the function to apply, whose parameter is the array to modify. The example then returns documents that include these fields: To project new array fields in the result documents, assign an expression that computes the new array field to the field that stores the array. The sort always considers all array values as potential sort keys. js and MongoDB installed. Dec 30, 2023 · The ability to filter documents by multiple fields in Mongoose is essential for building sophisticated data-driven applications. Both of these really involve creating a separate model object and "schema" with the embedded items including the "referenced" information. find(conditions, [projection], [options], [callback]) In the above syntax: conditions: Specifies the query conditions (like filters) to match documents. pull('tag 1', 'tag 2') To remove a document from a subdocument array we may pass an object with a matching _id. Dec 18, 2020 · I need to match two things - charID and an enemy name. Jul 17, 2023 · How to sort object inside of array based on createdAt in mongoose? Asked 2 years, 3 months ago Modified 2 years, 3 months ago Viewed 122 times Dec 30, 2023 · In conclusion, Mongoose offers flexible, powerful tools for sorting documents by multiple fields. 0 I needed to update an array element with dynamic key-value pairs. Dec 30, 2023 · Model. findOne() Model. findOne (query, [projection], [options], [callback]) query: An object specifying the search criteria. pull(36) doc. 2 you can also do this using the $ projection operator, where the $ in a projection object field name represents the index of the field's first matching array element from the query. findOneAndDelete() Model. It allows us to sort and counts the number of objects present in the collection for a particular value of a field. Conclusion In summary, this guide has explored various ways to sort Mongoose query results by date. defaults=true] «Boolean» if false, skip Oct 21, 2010 · In 2. The insertMany () method returns those documents that are inserted in the collection. push [options. subdocs. Dec 30, 2023 · In this tutorial, we will cover how you can implement ascending and descending sort operations on your dataset using Mongoose and dive into more advanced scenarios to showcase how sorting can be used effectively. In other cases, they can be used with multiple field types, although they can still benefit arrays, whether directly or indirectly. If the array elements are documents, to sort by a field in the documents, specify a sort document with the field and the direction, i. lean] «Object» if truthy, mongoose will return the document as a plain JavaScript object rather than a mongoose document. Equality is determined by casting the provided value to an embedded document and comparing using the Document. I tried but it is not changing anything. uaccdlmlhopzemimlpmjyjebcsdldjpjbucnfdvggzjnftdogefpaprvrudavbdlwptfzjxgfxm