Mongoengine query However, as I've tried to switch m Convert URL query parameters to a Mongo db criteria, with an intuitive, yet complete convention for the query parameters. EmbeddedDocument Jun 1, 2011 · I would suggest ignoring that method unless you are querying it directly via the terminal or want to look up something quickly. As the purpose of this tutorial is to introduce MongoEngine, we’ll focus Jan 4, 2015 · I am executing a query with mongoengine. 1 Jun 12, 2022 · How to query mongoengine by using contains in list? Asked 13 years, 1 month ago Modified 3 years, 5 months ago Viewed 3k times Dec 5, 2013 · And I want to query for nameTags with specific names. filter( May 4, 2020 · How to query dates in MongoDB using $gte and $lte with flask-mongoengine? Asked 5 years, 5 months ago Modified 5 years, 5 months ago Viewed 1k times Base module API This is the flask_mongoengine main modules API documentation. When I use . ReferenceField(SomeOtherModel)) From what I can read in the mongoengine documentation, contains is really a string query, but it works surprisingly here as well. Something like: Jun 28, 2017 · mongoengine - Query on ListField of EmbeddedDocumentField Asked 7 years, 8 months ago Modified 7 years, 8 months ago Viewed 2k times Jun 30, 2013 · Based on the question and answer here, I was able to figure out how to dynamically build a complex query in mongo engine using map/reduce and lambda expressions. _get_name(setting_name) [source] Return known pymongo setting name, or lower case name for unknown. Using the standard blog example I have something like: class Comment(EmbeddedDocument Jun 11, 2014 · MongoDB / MongoEngine - Query for Item in List Asked 10 years, 9 months ago Modified 7 years, 9 months ago Viewed 1k times Jan 14, 2013 · mongoengine query projection Asked 12 years, 2 months ago Modified 12 years, 1 month ago Viewed 3k times Apr 7, 2015 · I am trying to query my database. Connecting to MongoDB Connections in MongoEngine are registered globally and are identified with aliases. Start using query-params-mongo in your project by running `npm i query-params-mongo`. I wanted to use a feature of DjangoFilterBackend for same. 3. objects (last_modified__gte = post_date) #mongoengine query Is there any way to make this type of query? 2. StringF 2. com’. Any suggestion on how to get the original query to work?? mongoengine - query how to filter by ListField sizeI have the following model: class Like(EmbeddedDocument): user = ReferenceField(User,dbref=False) date = Jul 10, 2019 · If you mean model class, if you are using MongoEngine for data access, you ought to already have one, and yes, use it, see my three line example. compare_indexes () not working correctly for text indexes on multiple fields #2612 Add support for transaction through run_in_transaction (kudos to juannyG for this) #2569 Some considerations: MongoEngine - Fields A MongoEngine document class has one or more attributes. Signals 2. Jan 22, 2024 · Querying: MongoEngine provides a query set API for querying the database. May 16, 2012 · for example. May 1, 2017 · I have a map field that I want to query by. MongoEngine is based on the PyMongo driver and tested against multiple versions of MongoDB. Advanced queries 2. 15. May 16, 2012 · I'm looking for an operator, which allows me to check, if the value of a field contains a certain string. Here's my model class ContentItem(Document): account = When it comes to querying using objects(), querying Page. For example, to get price wise list in ascending order − Dec 30, 2019 · It doesn't fit exactly the query I need because it will group by the make and won't return all the rest of the fields in the document. A tumblelog is a blog that supports mixed media content, including text, images, links, video, audio, etc. Feb 5, 2010 · This is made possible in MongoEngine through the Q class. At any rate, this sort of query is out of the scope of django style queries and need to be done in the raw pymongo style, which is practically identical to the shell syntax as shown. The complete API documentation — the innards of documents, querysets and fields. scalar("id") I get a queryset with objects ids Test. I'd suggest reading more about mongodb's dot notation about how you can query / look into objects and return matching documents. py at master · MongoEngine/mongoengine Hi everyone (and future me who will probably search for the same question 10 years later) I optimized the code using the idea of a search tree. Document): username = db. order_by takes a variable number of string arguments, which are the field names (as defined in your documents) optionally preceded by a " - " (to indicate a descending sort, i. For simplicity’s sake, we’ll stick to text, image, and link entries. e calling connect): The Feb 5, 2010 · Note As of MongoEngine 0. Documents migration The structure of your documents and their associated mongoengine schemas are likely to change over the lifetime of an application. So you might try something like this to get results: MongoEngine provides aggregate () function that encapsulates PyMongos aggregation framework. I feel like I might be overlooking something very obvious, but the following scenario doesn 2. A pipeline can have multiple stages. LookUpError: Cannot perform join in mongoDB: comment__body as its not a relational database. Jan 14, 2021 · On the other hand, the ReferenceField performs the database query immediately when the reference is set, allowing direct access to the referenced object without an additional query. Feb 25, 2016 · Continue to help good content that is interesting, well-researched, and useful, rise to the top! To gain full voting privileges, Apr 26, 2018 · Mongoengine - Query to get matching documents with a field value null or that do not contain the field Asked 7 years, 1 month ago Modified 7 years, 1 month ago Viewed 577 times MongoEngine is a Python Object-Document Mapper for working with MongoDB. 2 and MongoEngine 0. I want to filter both, so I only get those colle A query can be subjected to filter with the help of field names as keyword arguments. 2. Behind the scenes, MongoEngine deals with inheritance by adding a _cls attribute that contains the class name in every documents. The mongoengine documentation is apparently incorrect in this case. Here is my schema: Mar 15, 2019 · I'm trying to retrieve data from mongodb via mongoengine within a specified time span. For descending order, attach sign to name of field. html but I can not understand what is: 1. EmbeddedDocument): date = mongoengine. Logging/Monitoring It is possible to use pymongo. 4. I've (hopefully) synced up the database with my model in a normal fashion, yet when I attempt to query the database for something as simp 3. May 25, 2024 · Mongoengine query listfield contains string matches I have a ListField in models which contians string values. InvalidQueryError: Querying the embedded document '_Status' failed, due to an invalid query value It works for strings and objectIds, but it does not seem to add for embedded documents. first(). Writing GridFS support comes in the form of the FileField field object. mongoengine. Fix Document. Querying the database ¶ Document classes have an objects attribute, which is used for accessing the objects in the database associated with the class. To build a complex query, you may combine Q objects using the & (and) and | (or) operators. My cod Sep 20, 2013 · MongoDB doesn't do joins hence the error message: mongoengine. Document Validation 2. Jan 30, 2013 · Mongoengine Query using only () on list of reference fields Asked 12 years, 9 months ago Modified 12 years, 9 months ago Viewed 12k times Query efficiency and performance 2. LookUpError: Cannot resolve field "_id" how could I exclude the "_id" field in the query? QuerySets order_by () function is used to obtain the query result in a sorted manner. I am using rest_framework_mongoengine to do so. However, when it comes to advanced aggregation, Flask-MongoEngine doesn’t natively wrap all MongoDB aggregation stages. Feb 10, 2024 · This comprehensive tutorial is designed to guide you through employing AND and OR conditions in MongoEngine, a popular Object-Document Mapper (ODM) for working with MongoDB databases in Python. g: queries, connections, etc). Built-in validation 2. objects(labels__id=label_id). mongoengine / mongoengine / queryset / queryset. ListField(mongoengine. Now I want to add a filter to it, because I want to know how many times te user responded with True. 3 with mongodb using mongo engine to create rest api. Document): meta = {'collection': 'DeviationReport'} When it comes to querying using objects(), querying Page. For example, I have some text fields, some integer Dec 22, 2012 · why is it __raw__=(query)? did you mean __raw__=(query,) or __raw__=query? Jun 1, 2014 · @KumarDeepam There is a link at the bottom of the answer to a discussion about accessing the pymongo driver from the MongoEngine configuration. 8 the querysets utilise a local cache. Hence, you need to do, two queries, Which gets all the objects of Food, that fall under your type. connect(db=None, alias='default', **kwargs) Connect to the database specified by the ‘db’ argument. Construct the query_counter. A prefixed minus sign - is used to indicate descending order, while the absence of it implies ascending order. 1. list inner type when using for example list__0) Aug 20, 2013 · Hi, I needed to build a complex query in which I had to add a predicate on the _cls attribute through a naw query: query |= Q (raw= {'_cls': "My. 11. Failing that you can always directly create a pymongo instance in code. 3+) to return a non-caching queryset. As a result I want to get a list of ids to continue working with them. EmailField(required=False, unique=False) username = mongoengine. io - there is currently a tutorial, a user guide, and an API reference. 7. Now I have a piece of code like this: query = mymodel (terms__term__in=query_terms) and Jul 27, 2015 · Hi I am starting django 1. Feb 10, 2024 · Next Article: MongoEngine: How to query distinct values Previous Article: MongoEngine: How to close a connection Series: Data Persistence in Python – Tutorials & Examples Python Feb 10, 2024 · Next Article: MongoEngine: How to query distinct values Previous Article: MongoEngine: How to close a connection Series: Data Persistence in Python – Tutorials & Examples Python 2. Advanced Query: Aggregation Framework For more complex scenarios, MongoEngine offers integration with MongoDB’s aggregation framework, enabling sophisticated queries and data transformations. May 25, 2019 · But I get this error: mongoengine. Pass the required field to only () function. ints for number comparition operators) and fields themselves (eg. Aggregation operation uses a collection as input and returns one or more documents as a result. 2. Below is the db model used. Each attribute is an object of Field class. Instead of putting all records in a single List in User I broke it down by year and month class EmbeddedRecord(mongoengine. This problem discovered in issue #451. My main object is to fetch all the reservation objects which customer id's equal to wanted customer id with Aug 3, 2015 · Mongoengine query set to list conversion Asked 10 years, 3 months ago Modified 10 years, 3 months ago Viewed 8k times Query efficiency and performance 2. Jan 4, 2017 · MongoEngine / mongoengine Public Notifications You must be signed in to change notification settings Fork 1. Arbitrary metadata such as content type can also be stored alongside the files. 0) for objects having the following cri Apr 12, 2016 · I need query a list with all embedded documents in mongoengine. 3k flask-mongoengine attaches the following methods to Mongoengine’s default QuerySet: get_or_404: works like . Instead of using the bitwise operators "&" and "|", you should use the standard operators "and" and "or". Jul 30, 2021 · 转自： MongoEngine 查询（翻译） 数据库查询 Document 对象有一个 objects 属性，用来访问在数据库中跟这个类有关的对象。这个 objects 属性其实是一个 QuerySetManager ，它会创建和返回一个新的 QuerySet 对象的访问。这个 QuerySet 对象可以从数据库中遍历获取的文档： # Prints out the names of all the users in the database How do I do this with mongoengine without using a raw query (which is apparently the only way based on my searches)? I've blindly tried several variations like: Feb 12, 2024 · Regular expressions are a powerful tool in MongoEngine for querying documents with pattern-based searches. Changelog 4. Feb 10, 2024 · The output would be similar to the basic query, but limited to users with their email domain as ‘@example. MongoDB uses concept of data processing pipelines. For example, I have some text fields, some integer Dec 22, 2012 · why is it __raw__=(query)? did you mean __raw__=(query,) or __raw__=query? Hello guys! I hope this question is not out of bounds for this subreddit. Writing 2. As you can't use a dot as a keyword argument mongoengine follows the django orm style of double underscores: Jun 4, 2020 · Python - Mongoengine: date range query Asked 5 years, 5 months ago Modified 5 years, 5 months ago Viewed 967 times Sep 6, 2011 · Mongoengine is inspired by Django's ORM, and like Django, it uses order_by to sort the result set. When I try to query the DB and tran May 12, 2021 · I need to query only the subset of Documents that contain an EmbeddedDocument that meets more than one criteria. BaseField is the base class or all field types. Document Validation By design, MongoEngine strictly validates the documents right before they are inserted in MongoDB and makes sure they are consistent with the fields defined in your models. Streaming 2. I have little experience with MongoDB and I have used it only alongside Flask (Python microframework for those unfamiliar with the name). Some records currently have extra fields that are not included in my model schema (by error, but I want to handle these cases). objects(tags='coding') if tags are like ['coding', 'x Feb 10, 2024 · Getting Started to Sorting in MongoEngine Sorting in MongoEngine is performed using the order_by() method attached to your query sets. However, one common challenge when using Learn how to efficiently query databases using MongoEngine with practical examples and detailed explanations. As the purpose of this tutorial is to introduce MongoEngine, we’ll focus MongoDB with MongoEngine ¶ Using a document database like MongoDB is a common alternative to relational SQL databases. For example if I have a database [{name: Joe, age:22}, {name: Susie, age 22}, {name: Joe, age: 70}, {name: Susi I'm running into a classic pitfall, but can't find a good example with mongoengine of what I should be doing. What I am trying to build is a simple sidebar of search filters to query my collections. Answered by last-partizan Filipizaum asked this question in Q&A Using list in a "not_contains" query #192 Filipizaum Aug 17, 2023 · 1 comment Answered by last-partizan Return to top Discussion options { {title}} Query efficiency and performance 2. This method takes strings that represent the fields you want to sort by. The objects attribute is actually a QuerySetManager, which creates and returns a new QuerySet object on access. Armed with this knowledge, you’ll be able to unleash the full querying capabilities of MongoEngine and May 10, 2014 · the code will raise an error, mongoengine. class Page(Document) tags = ListField(StringField()) In this case, we can find out a value in the tags list like this. If other fields are accessed after executing only () query, default value is returned. So iterating it multiple times will only cause a single query. 4. Jul 25, 2019 · MongoEngine raw query not solved Asked 6 years, 4 months ago Modified 3 years, 7 months ago Viewed 4k times Feb 10, 2024 · Choosing the right method to exclude fields from your query results in MongoEngine largely depends on the complexity of your requirements and the structure of your documents. This guide has covered the basics of setting up such queries, provided examples for both simple and complex search patterns, and highlighted important considerations to keep in mind. 9, we can use $aggregate command to perform join queries on multiple collections in a database. Sub. 8. If no alias is provided during the connection, it will use “default” as alias. context_managers. As mentioned there pymongo settings are not case-sensitive, but Nov 8, 2017 · I believe it's important for mongoengine to stay close to pymongo in terms of the available operators, so I wouldn't add a custom "__date" operator (just my opinion). You have been provided absolutely everything you need to be able to do what you initially asked, in two major ways (with and without MongoEngine), with a demonstration and links to relevant documentation. GridFS 2. 3, last published: 3 years ago. 6. monitoring with MongoEngine, you need to make sure that you are registering the listeners before establishing the database connection (i. Dec 5, 2019 · I want to filter a JSON object (in the collection, called chat) which contains an array of objects. Connecting mongoengine. Latest version: 1. 3. The object contains two values, leaved and user. Development (Fill this out as you fix issues and develop your features). 10. Mongoengine's QuerySet class does support distinct () method to do the job. However, one common challenge when using MongoEngine is a Document-Object Mapper (think ORM, but for document databases) for working with MongoDB from Python. To connect to a running instance of mongod, use the connect() function. Due to the very flexible nature of mongodb, migrations of models aren’t trivial and for people that know about alembic for sqlalchemy, there is Aug 9, 2022 · It looks like in prepare_query_value() for the ObjectIdField class, it calls to_mongo() which raises an exception if the value is NOT an object id. objects(_id='4f4381f4e779897a2c000009') But how to do it, if _id requires ObjectId object and even I try to set ObjectId from pymongo it doesn't wor Using MongoEngine provides additional support for Python list and dict objects in Django model objects. Indexing is a crucial aspect of optimizing Nov 28, 2017 · This is impossible with a single query, as Reference Field hold only the id of the actual document. A Q object represents part of a query, and can be initialised using the same keyword-argument syntax you use to query documents. class DeviationReport(db. errors. The required parameter decides whether value for this 3 days ago · Flask-MongoEngine is a popular ORM (Object-Relational Mapper) for MongoDB in Flask applications, simplifying data modeling and querying. Multiple databases are supported by using aliases Sep 7, 2025 · Learn how to effectively use `MongoEngine` query operators to search nested fields in your MongoDB documents. get (), . Documentation is available at https://mongoengine-odm. Multiple databases are supported by using aliases Feb 10, 2024 · Introduction MongoEngine is a popular Document-Object Mapper (DOM) for working with MongoDB in Python. How do I query a string matches which are contains given string? 3. objects(type='nonveg') Now, use the foods Objects List to filter the Recipe collection as : Recipe. Multiple databases are supported by using aliases Dec 8, 2012 · I need get documents from db by oid, like: Docs. The usage is as follows − Qset. The keys in the keyword arguments correspond to fields on the Document you are querying:,When iterating the Python mongoengine How to query an EmbeddedDocument Asked 7 years, 4 months ago Modified 6 years, 11 months ago Viewed 255 times Jun 4, 2024 · This query indeed requires to know the parent image ID, which I can obtain in a previous step with something like: image_id = Image. One of the versatile fields provided by MongoEngine for modeling arrays Jun 1, 2014 · I'm have a problem that query set retrieving oid in json, and I would like to retrieve actual username of that User collection I have below: class User(db. Skipping validation 2. Connection settings may be provided here as well if the database is not running on the default port on localhost. Multiple databases are supported by using aliases 3. Custom validation 2. For example, from above products collection, to print details of document with name of product as TV, we use Name as keyword argument. Feb 5, 2010 · Note As of MongoEngine 0. readthedocs. The Full guide to MongoEngine — from modeling documents to storing files, from querying for data to firing signals and everything between. Document): email = mongoengine. 9. Feb 10, 2024 · However, understanding the underlying queries that MongoEngine generates can be incredibly beneficial for debugging, optimization, and simply gaining a deeper understanding of how your code interacts with the database. 5. MongoEngine makes the assumption that the documents that exists in the DB are compliant with the schema. Aug 24, 2014 · The journey with Flask, MongoDB and MongoEngine continues. This includes methods like . objects(food__in=foods). objects. This field acts as a file-like object and provides a couple of different ways of inserting and retrieving data. This pattern shows how to use MongoEngine, a document mapper library, to integrate with MongoDB. Apr 27, 2012 · I need to query Mongo database for elements that have a certain property beginning with any prefix in the list. The object returned when accessing a FileField is a proxy to Pymongo’s GridFS In the following example, a Feb 12, 2024 · When it comes to managing data in MongoDB with Python, MongoEngine emerges as a pivotal ODM (Object Document Mapper) tool, empowering developers to work with MongoDB documents as Python objects. Class"}) However, because of the construction of the query with a dict, mongoengine overid 3 class News(Document): news_id = IntField() post_date = DatetimeField() last_modified = DatetimeField() This is Document I want to make mongoengine query where last_modified is greater than post_date Something like News. Replacing files 2. Something like: class User(mongoengine. If your project uses a relational database and you want to migrate to a non-relational database, like MongoDB, Djongo is a good option that transpiles SQL query string to MongoDB query documents. query is work perfect the problem is when i convert query result into json its show only fields name. Jul 27, 2021 · How to use MongoEngine to query and filter for objects from the relationship of values between fields of the same object? I'm trying to use MongoEngine (0. e. So I thought the question was answered here How to perform such filter queries in mongoengine on nested dicts or arrays contained in dict with python? Mar 16, 2017 · "Fun fact", the django orm, which mongoengine took heavy inspiration from (the whole query language, including the __ keyword syntax), does mention the filter method in its docs :) MongoEngine is a Document-Object Mapper (think ORM, but for document databases) for working with MongoDB from Python. 2 days ago · MongoDB is a popular NoSQL database known for its flexibility and scalability, while MongoEngine is a powerful Object-Document Mapper (ODM) for Python that simplifies interacting with MongoDB. connection. Say we have a Product model and we want to let our users filter which products they see on a list page. Apr 28, 2014 · mongoengine - query how to filter by ListField size Asked 12 years, 9 months ago Modified 11 years, 7 months ago Viewed 8k times Feb 12, 2024 · Overview MongoEngine, a Document-Object Mapper (DOM) for working with MongoDB from Python, offers extensive functionality for managing collections and documents. If authentication is needed, provide username and password arguments as well. Server-side javascript execution 2. get (), but calls abort (404) if the object DoesNotExist. objects () will query both Page and DatedPage whereas querying DatedPage will only query the DatedPage documents. So my question is: what is the right way to use "aggregate" in MongoEngine? Jan 9, 2017 · Since Mongodb 3. In using large collections you will want to index the field and query it using the below method. I feel like this is not a great design as the developer should be able to at least query for a non object id value even if the field technically should be. Is there an query operator or a different function t 2. In the following poorly constructed example, I create two simple Documents Sep 18, 2024 · Hi, The recently released pymongo 4. connection module Module responsible for connection setup. Atomic updates 2. order_by(fieldname) By default, the sort order is ascending. It provides an intuitive way to interact with MongoDB collections as Python objects. Oct 3, 2023 · In this guide, we'll take a look at how to use the MongoEngine wrapper Flask-MongoEngine to integrate and create a CRUD application in Flask and Python with MongoDB. This section provides guidance and recommendations on how to deal with migrations. Oct 24, 2013 · I need to make a query with a negation. A running MongoDB server and Flask-MongoEngine are required. py bagerard update hooks and autoformat with newer black Jul 31, 2014 · How to delete document from MongoDB using Mongoengine? I'veread the API reference here: http://docs. Retrieval 2. 2k Star 4. The BaseField class constructor has the following arguments − BaseField(db_field, required, default, unique, primary_key) The db_field represents name of database field. This guide offers practical solutions and insig Jul 8, 2019 · The query above works, it gives back the correct amount of responses (4). StringField( class mongoengine. Page. This post would be a simple tutorial for join queries on Mongodb (via MongoEngine in Python) with examples. highest first). In this tutorial, we’ll cover the basics 1. It allows developers to define models, query data, and handle relationships using Pythonic syntax, abstracting away the complexity of raw MongoDB queries. The first argument is the name of the database to connect to: A Python Object-Document-Mapper for working with MongoDB - mongoengine/mongoengine/queryset/base. Also as we do unwind and than group it will be a lot less efficient as we won't be able to use indexes and it will run on more documents. API Reference 3. Deletion 2. 1 I'm building a reservation site for a restaurant using flask framework and mongoengine. Dec 29, 2022 · Answer by Brynlee Bryant Fields on embedded documents may also be referred to using field lookup syntax by using a double-underscore in place of the dot in object attribute access syntax:,The query may be filtered by calling the QuerySet object with field lookup keyword arguments. 9 is causing the following error: Aug 8, 2012 · MongoEngine - Query Operator for "contains" - Check if value is in list Asked 12 years, 7 months ago Modified 12 years, 7 months ago Viewed 2k times Mar 13, 2016 · I did check out MongoEngine doc for aggregation, but seems it's not clear enough for it. . It uses a simple declarative API, similar to the Django ORM. filter (), . Tutorial This tutorial introduces MongoEngine by means of example — we will walk through how to create a simple Tumblelog application. monitoring to monitor the driver events (e. Using django-mongoengine-filter ¶ django-mongoengine-filter provides a simple way to filter down a queryset based on parameters a user provides. In Django I would use exclude() but regarding to the MongoEngine doc exclude means something different. I must admit that I can’t get my head around not using these IDs. DateField(required = True) #contents = class Year(mongoengine. 1 I'm using python's mongoengine to query MongoDB, and have loved it for the most part, but I'm having an issue with an advanced query. org/apireference. This can be done via the code foods = Food. flask_mongoengine. 29. 0 documentation IndexIndex This will significantly improve performance especially for fields with extremely large length such as ListField. To use pymongo. id Does this solution seem wrong to you? Thanks also for your remark on using _id on EmbeddedDocuments. Basic stage provides that provide filter and operate like queries. Jul 27, 2015 · Hi I am starting django 1. The model ¶ Let’s start with our model: Hello guys! I hope this question is not out of bounds for this subreddit. There are 7 other projects in the npm registry using query-params-mongo. Basic Sorting Oct 16, 2013 · Can a mongoengine query return a list of objects that all contain unique attributes. Apr 28, 2021 · A marshmallow schema for use in url query which checks for possible mongoengine query filters (as well as only and order_by args) and converts their types based on requirements for filters (eg. query_counter ¶ Query_counter context manager to get the number of queries. The QuerySet object may be iterated over to fetch documents from the database: Feb 20, 2014 · refs = mongoengine. Also, keep in mind that the in Index — MongoEngine 0. Apr 26, 2017 · i tried to fetch data from mongodb using mongoengine with flask. This can be handy if you want to monitor the queries issued by MongoEngine to the driver. The library I am using is FlaskMongoEngine. If you want to use an index query using the following: Jun 11, 2020 · so if I really want to query for books that the author acronym = "CC", how should I query? Feb 10, 2024 · This tutorial introduced the fundamentals of using ReferenceField in MongoEngine, illustrating how to define relationships between documents and efficiently query them. all (), and chaining of queries. Jan 28, 2014 · I can't seem to figure out how to query a GenericReferenceField properly, based on (a list of) ObjectIds. Learn about the differences between MongoEngine and PyMongo, and how to use both of them in a Flask application in Python. Aug 17, 2012 · First of all, it's only possible to get distinct values on some field (only one field) as explained in MongoDB documentation on Distinct. If this is not the desired behaviour you can call no_cache (version 0. gpfy klp ffk odzvyfu pbif mjp heussem zdym qdrzqv xitkq thwa pdtw xenk vekjx czy