This example app combines Mongoid with Devise. Mongoid is a datastore that gives you quick development without schemas or migrations. Devise gives you ready-made authentication and user management.
Best of all, there’s a detailed tutorial (walk-through) to show how it’s built.
You can clone this app or generate a new Rails application using this app as a template.
To keep up to date with development of this app, follow the author on Twitter:
http://twitter.com/yaxdotcom.
Any issues? Please create an Issue on GitHub.
A complete walkthrough tutorial is available on the GitHub wiki:
The tutorial documents each step to follow to create the application. Every step is documented concisely, so a complete beginner can create this application without any additional knowledge. However, no explanation is offered for any of the steps, so if you are a beginner, you’re advised to look for an introduction to Rails elsewhere. Refer to the Rails Guides site for help if you are a beginner. Or read Michael Hartl’s Ruby on Rails Tutorial book.
If you simply wish to modify the application for your own project, you can download the application and set it up as described below, without following the tutorial.
For a simple Devise example using SQLite for Rails 3, see plataformatec/devise_example.
Andi Altendorfer has extended the app at http://github.com/iboard/CBA with
- OmniAuth (for authentication via OpenID, Facebook, OAuth, etc.)
- CanCan (adding authorization by roles)
- Paperclip (for avatars)
Kristian Mandrup has an application named Cream that integrates Devise, Roles and CanCan with Permits for a Rails 3 app with Mongoid or other ORMs.
This is a barebones application that serves to demonstrate Mongoid and Devise working on Rails 3.
All you can do is visit a home page and see a list of users. With the default user’s email and password (supplied below), you can log in and view details for each user. You can customize this app as you need.
Before running this app, you need to install
- The Ruby language (version 1.8.7 or 1.9.2)
- Rails (version 3.0.4)
- A working installation of MongoDB (version 1.6.0 or newer)
I recommend installing rvm, the Ruby Version Manager, to manage multiple versions of Rails.
If you are using rvm, you can see a list of the Ruby versions currently installed:
$ rvm list
Check that appropriate versions of Ruby and Rails are installed in your development environment:
$ ruby -v
$ rails -v
If you don’t have MongoDB installed on your computer, you’ll need to install it and set it up to be always running on your computer (run at launch). On Mac OS X, the easiest way to install MongoDB is to install Homebrew and then run the following:
brew install mongo sudo mkdir -p /data/db sudo chmod -Rv 777 /data/
You have several options for getting the code.
If you simply wish to examine the example code, you can download the code (“clone the repository”) with the command
$ git clone git://github.com/fortuity/rails3-mongoid-devise.git
The source code is managed with Git (a version control system). You’ll need Git on your machine (install it from http://git-scm.com/).
You can use an application template to generate a new version of the example app. You’ll find an application template for this app in the fortuity/rails3-application-templates repository.
Use the command:
$ rails new APP_NAME -m https://github.com/fortuity/rails3-application-templates/raw/master/rails3-mongoid-devise-template.rb -T -O -J
Use the -T -O -J flags to skip Test::Unit files, Active Record files, and Prototype files.
You MUST be using Rails 3.0.4. Generating a Rails application from an “HTTPS” URL does not work in Rails 3.0.3 and earlier versions.
This creates a new Rails app (with the APP_NAME you provide) on your computer.
The application template offers you the following options:
- set up your view files using the Haml templating language
- use jQuery instead of Prototype
- install the heroku gem for deployment to Heroku
The tutorial shows how a customized application template can be assembled from “recipes.” You can use the RailsWizard.org web site to create your own custom application template, adding any template recipes you want from the rails-template-recipes repository.
The application uses the following gems. I recommend checking for newer versions of these gems before proceeding:
- rails (version 3.0.4) (check rubygems.org for the rails gem)
- mongoid (version 2.0.0.rc.7) (Check rubygems.org for the mongoid gem)
- bson_ext (version 1.2.2) (Check rubygems.org for the bson_ext gem)
- devise (version 1.2.rc) (Check rubygems.org for the devise gem)
The app has been tested with the indicated versions. If you are able to build the app with a newer gem, please create an issue on GitHub and I will update the app.
Install the required gems on your computer:
$ bundle install
You can check which gems are installed on your computer with:
$ gem list --local
Keep in mind that you have installed these gems locally. When you deploy the app to another server, the same gems (and versions) must be available.
Mongoid provides access to the MongoDB database from Rails.
You can use the default configuration found in the file config/mongoid.yml.
If you want to see what’s in your MongoDB databases, I recommend using the MongoHub app (for Mac OS X).
This app uses Devise for user management and authentication. Devise is at http://github.com/plataformatec/devise.
You can modify the configuration file for Devise if you want to use something other than the defaults:
config/initializers/devise.rb
Configure email by modifying
config/initializers/devise.rb
and setting the return email address for emails sent from the application.
You may need to set values for your mailhost in
config/environments/development.rb
config/environments/production.rb
You’ll want to set up a default user so you can easily log in to test the app. You can modify the file db/seeds.rb for your own name, email and password:
puts 'EMPTY THE MONGODB DATABASE'
Mongoid.master.collections.reject { |c| c.name == 'system.indexes'}.each(&:drop)
puts 'SETTING UP DEFAULT USER LOGIN'
user = User.create! :name => 'First User', :email => '[email protected]', :password => 'please', :password_confirmation => 'please'
puts 'New user created: ' << user.name
Use the defaults or change the values for name, email, and password as you wish.
Add the default user to the MongoDB database by running the command:
$ rake db:seed
You can check that your app runs properly by entering the command
$ rails server
To see your application in action, open a browser window and navigate to http://localhost:3000/. You should see the default user listed on the home page. When you click on the user’s name, you should be required to log in before seeing the user’s detail page.
To sign in as the default user, (unless you’ve changed it) use
- email: [email protected]
- password: please
You should delete or change the pre-configured logins before you deploy your application.
For your convenience, here are instructions for deploying your app to Heroku. Heroku provides low cost, easily configured Rails application hosting.
To deploy this app to Heroku, you must have a Heroku account. If you need to obtain one, visit http://heroku.com/ to set up an account.
Make sure the Heroku gem is in your Gemfile. If it’s not, add it and run
$ bundle install
to set up your gems again.
Add your public key immediately after installing the heroku gem so that you can use git to push or clone Heroku app repositories. See http://docs.heroku.com/heroku-command for details.
Use the Heroku create command to create and name your new app.
$ heroku create _myapp_
You can use a Heroku add-on to deploy your app using the MongoHQ service.
To enable the add-on, you can use the Heroku web interface or you can enter the following commands:
$ heroku addons:add mongohq:free
You can check that everything has been added correctly by running:
$ heroku info --app myapp
Push your application to Heroku:
$ git push heroku master
Initialize your application database:
$ heroku rake db:seed
If you get the error message “failed to connect to any given host:port”, the config/application.rb file may not have the correct MongoHQ connection parameters.
Open your Heroku site in your default web browser:
$ heroku open
If you get errors, you can troubleshoot by reviewing the log files:
$ heroku logs
Devise provides a variety of features for implementing authentication. See the Devise documentation for options.
This application provides no useful functionality apart from demonstrating Devise and Mongoid working together on Rails 3. Add any models, controllers, and views that you need.
The application does not include tests (RSpec or otherwise). It relies on Devise and Mongoid which include extensive tests. This application is intended to be a basis for your own customized application and (in most cases) you will be writing your own tests for your required behavior.
See the Tutorial for this app for details of how it was built. Please create an Issue on GitHub if you identify any problems or have suggestions for improvements.
For a Mongoid introduction, Ryan Bates offers a Railscast on Mongoid. You can find documentation for Mongoid at http://mongoid.org/ There is an active Mongoid mailing list and you can submit Mongoid issues at GitHub.
For a Devise introduction, Ryan Bates offers a Railscast on Devise. You can find documentation for Devise at http://github.com/plataformatec/devise. There is an active Devise mailing list and you can submit Devise issues at GitHub.
This application is provided without additional documentation or support.
If you make improvements to this application, please share with others.
- Fork the project on GitHub.
- Make your feature addition or bug fix.
- Commit with Git.
- Send the author a pull request.
If you add functionality to this application, create an alternative implementation, or build an application that is similar, please contact me and I’ll add a note to the README so that others can find your work.
Daniel Kehoe (http://danielkehoe.com/) implemented the application and wrote the tutorial.
Is the app useful to you? Follow me on Twitter:
http://twitter.com/yaxdotcom
and tweet some praise. I’d love to know you were helped out by what I’ve put together.
Any issues? Please create an Issue on GitHub.
Thank you to contributor Nakort Valles for updating to newer gems.
Thank you for improvements to the tutorial by contributors Cory Foy, Luca G. Soave, Bob Clewell, and Justin Workman.
This work is a compilation and derivation from other previously released works. With the exception of various included works, which may be restricted by other licenses, the author or authors of this code dedicate any and all copyright interest in this code to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this code under copyright law.
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