Masatoshi Nishiguchi
Software Engineer

Mongoose basics

database mongodb

Mongoose

Active Record vs Mongoose

Feature Active Record Mongoose
Database Type Relational Non-Relational
Title ORM ODM
Language Connects Ruby Objects to tables in database Models JS Objects to collections in database
DB Data Type SQL BSON
Structure Tables & Columns Collections & Documents
Naming Conventions Capitalized, Singular Model Name Capitalized, Singular Model Name
Primary Keys id _id (ObjectID)
Find All (Index) Model.all Model.find({}, callback)
Find By Id Model.find(id) Model.findById(Id, callback)
Find By Attribute Model.find_by(key: "value") Model.findOne({key: "value"}, callback)
Create Model.create!(key: value) Model.create({key: value}) OR newDoc.save(callback)
Update Model.update!(key: value) Model.findOneAndUpdate({key: value}, update, callback) OR Model.findByIdAndUpdate(id, update, callback)
Delete Model.destroy(id) Model.findByIdAndRemove(id, callback)

References