Object Document Mapper Is a programming technique for converting data between incompatible type systems in object-oriented programming languages. This creates, in effect, a "virtual object database" that can be used from within the programming language. There are both free and commercial packages available that perform object-relational mapping, although some programmers opt to create their own ODM tools.
Questions tagged [odm]
218 questions
200
votes
10 answers
MongoDB/Mongoose querying at a specific date?
Is it possible to query for a specific date ?
I found in the mongo Cookbook that we can do it for a range Querying for a Date Range
Like that :
db.posts.find({"created_on": {"$gte": start, "$lt": end}})
But is it possible for a specific date ?
This…
Unitech
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193
votes
6 answers
What is the difference between an ORM and an ODM?
I am trying to figure out what the difference is between ORM and ODM, as far as I understand the concept, ORM (Object Relational Mapper) maps the relations between data, where as ODM (Object Document Mapper) deals with documents. Am I right in…
Odyss3us
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83
votes
14 answers
Mongoid or MongoMapper?
I have tried MongoMapper and it is feature complete (offering almost all AR functionality) but i was not very happy with the performance when using large datasets. Has anyone compared with Mongoid? Any performance gains ?
PanosJee
- 3,866
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38
votes
8 answers
convert javascript plain object into model class instance
I need to implement small ODM like feature. I get plain javascript object from database, and I need to convert it into my model class instance. Let's assume model looks like:
class Model{
constructor(){
this.a = '777';
…
silent_coder
- 6,222
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27
votes
3 answers
Querying array elements with Mongo
How can I query the smoothies that have apple in them? (below is a collection with 3 documents)
_id => 1
name => 'best smoothie'
ingredients => Array
(
[0] => apple
[1] => raspberry
[2] => orange
[3] => banana
…
Devrim
- 2,826
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23
votes
3 answers
Mongoose ODM, change variables before saving
I want to create a model layer with Mongoose for my user documents, which does:
validation (unique, length)
canonicalisation (username and email are converted to lowercase to check uniqueness)
salt generation
password hashing
(logging)
All of…
dev.pus
- 7,919
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17
votes
3 answers
Mongoose.model vs Connection.model vs Model.model
I am bit confused with usage of models in mongoosejs
Models can be created using mongoose in these ways
Using Mongoose
var mongoose = require('mongoose');
var Actor = mongoose.model('Actor', new Schema({ name: String }));
Using Connection
var…
Prashant Bhate
- 10,907
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16
votes
2 answers
Nodejs Object Document Model for Redis
I'm want use an ODM for redis in node.js. Does anybody have any experience using any? I ideally want something that is somewhat the equivalent of mongoose (except instead for Redis instead of Mongodb).
The two I have heard of so far are nohm and…
GTDev
- 5,488
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11
votes
2 answers
Doctrine MongoDB ODM search in two or more fields
I would like to write a query in Doctrine Mongo ODM that searches by regex in two or more fields. In SQL it would look like:
SELECT * FROM user WHERE name LIKE %search% OR surname LIKE %search%;
I can write a query for one field like…
bazo
- 745
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11
votes
1 answer
Is it possible to use sort() on multiple fields in Doctrine 2 ODM?
I am doing a query on a result document in my doctrine mongodb *odm*. There are two indexed fields in the document which I would like to use in sort. I have written something like:
$results = $this->createQueryBuilder('Document\Score')
…
Himel Nag Rana
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10
votes
3 answers
php70-mongo install doctrine/mongodb-odm fails
I try to install doctrine/mongodb-odm[1.0.5] over composer but drops me
Problem 1
- doctrine/mongodb 1.3.0 requires ext-mongo ^1.5 -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.2.2 requires…
deroccha
- 1,181
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10
votes
2 answers
MongoDB - Query conundrum - Document refs or subdocument
I've run into a bit of an issue with some data that I'm storing in my MongoDB (Note: I'm using mongoose as an ODM). I have two schemas:
mongoose.model('Buyer',{
credit: Number,
})
and
mongoose.model('Item',{
bid: Number,
location: { type:…
jordan
- 9,570
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8
votes
1 answer
Creating a model in nodejs without an ORM or ODM
I am surprised why this is so hard to find.
I am trying to convert my monolith to a 3 layer architecture for my node express app with a propriety sql.
Repository
BEFORE architecture change
1 file entry.js
1 endpoint with business logic
Functions…
codesim
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- 7
7
votes
1 answer
Doctrine MongoDB use without ODM
I am using Doctrine MongoDB within Symfony2, but now I want to do some things which for me are easier without the ODM, how can I get the MongoClient or MongoCollection object?
I want to use MongoDB in the old-fashioned way…
joschua011
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6
votes
2 answers
How to use Mongoose in Meteor?
I've looked at the answer posted here: Meteor: integration with Mongoose?, but I'm looking for a simpler, more modular solution if possible for using Mongoose with Meteor.js.
Is there a better way that I should be handling ODM or native support I…
ilmatic
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