MongoDB CRUD operations

In this section we will cover CRUD operations using Ruby, Python, and PHP with the official MongoDB driver and some popular frameworks for each language respectively.

CRUD using the Ruby driver

In the previous chapter, we covered how to connect to MongoDB from Ruby, Python, and PHP using the drivers and ODM. In this chapter, we will explore create, read, update, and delete operations using the official drivers and the most commonly used Object Document Mapper (ODM) frameworks.

Creating documents

Using the process described in Chapter 2, Schema Design and Data Modeling, we assume that we have an @collection instance variable pointing to our books collection in a mongo_book database in the 127.0.0.1:27017 default database:

@collection = Mongo::Client.new([ '127.0.0.1:27017' ], :database => 'mongo_book').database[:books]

Inserting a single document with our definition:

document = { isbn: '101', name: 'Mastering MongoDB', price: 30}

Can be done with a single line of code as...