Hanami::Mongoid

This simple gem aims to replicate Hanami concept of repositories when using MongoDB as database. It adds a class Hanami::Mongoid::Repository which is a substitute for the original Hanami::Repository class.

Use thi line to your application's Gemfile instead of hanami-model:

gem 'hanami-mongoid'

And then execute:

$ bundle install

When generating a new model, i.e. with

$ hanami generate model book

Simpy delete the db folder (since MongoDB doesn't care for migrations) and change the following generated files:

# lib/bookshelf/entities/book.rb
class Book < Hanami::Entity
end

# lib/bookshelf/entities/book.rb
class Book
    include Mongoid::Document
end

And:

# lib/bookshelf/repositories/book_repository.rb
class BookRepository < Hanami::Repository
end

# lib/bookshelf/repositories/book_repository.rb
class BookRepository < Hanami::Mongoid::Repository
end

This way you can keep separated the repository and entity logic as Hanami suggests. You can call the usual database related methods using the repository:

BookRepository.new.first                        # #<Book:0x00007fd8b6bea578>
BookRepository.new.find('5af4c697699bbdaad')    # #<Book id: 5af4c697699bbdaad>

Or even collection specific methods, for example insert_many or aggregate.

And of course you can add custom queries in the repository:

# lib/bookshelf/repositories/book_repository.rb
class BookRepository < Hanami::Mongoid::Repository
    def most_recent_for_author(author, limit = 8)
        self.where(author: author).order_by(created_at: :desc).limit(limit)
    end
end

Bug reports and pull requests are welcome on GitHub at https://github.com/Pluvie/hanami-mongoid.