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Sessionizer

Sessionizer is a tool for managing session registration for unconferences. It was written for Minnebar, an unconference in Minnesota and one of the largest BarCamps in the world.

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Features

  • Session creation and editing by participants
  • Sessions with multiple presenters
  • Participants can express interest in sessions
  • Collaborative recommendation engine for recommending sessions based on similarity of interest
  • Automatic scheduling algorithm that uses simulated annealing to minimize presenter overlap an maximize attendee attendance preferences
  • Mobile optimized display of schedule
  • iCalendar feed of schedule
  • Administrative backend for editing sessions
  • Export of data for various purposes

Development

Running locally

To run locally, install the heroku command line tools from here.

$ cd src
$ heroku local

You can then visit http://localhost:5000.

Running with Vagrant and VirtualBox

You'll need to install VirtualBox, Vagrant, and Ansible first. VirtualBox and Vagrant both have Mac OS X installer packages, and Ansible can be installed either with Homebrew or with pip, the Python package manager.

Once you've got those installed, you can bootstrap the project with:

$ cd vagrant && vagrant up

This will create the box, install the gems, create the database (if it doesn't already exist), and start the app inside the box. To access it, add an entry in your /etc/hosts file like the following (or do the equivalent in dnsmasq.conf):

192.168.100.185 sessionizer.vm

You can then visit http://sessionizer.vm/.

To restart the app, you can ssh into the box and run:

$ vagrant ssh
vagrant$ sudo service unicorn-sessionizer restart

-- or --

vagrant$ railsup

To re-run the provisioning scripts, which are idempotent, you can simply do:

$ vagrant provision

This should bring the box back into its correct configuration if anything has gotten messed up.

If you ever need to restart the unicorn processes within the virtual box you can alway use the alias railsup.

Seeding data for development

For development, run rake app:make_believe to hydrate the database with sample data. It will reset the database, create an event, participants, timeslots, sessions, and apply randomized participant interest. This does not run the scheduling algorithm.

Locally:

 $ cd src
 $ bundle exec rake app:make_believe

From Vagrant:

 $ cd vagrant; vagrant ssh
 $ cd /srv/sessionizer
 $ bundle exec rake app:make_believe

Deploying to Heroku

  1. Create an application. Sessionizer runs on the default heroku-18 stack.
  2. Add the memcache add-on: heroku addons:add memcached:5mb
  3. Run heroku run rake db:migrate
  4. Run heroku run rake db:seed
  5. Set a username and password for the Sessionizer admin: heroku config:add SESSIONIZER_ADMIN_USER=foo SESSIONIZER_ADMIN_PASSWORD=bar
  6. Set a MANDRILL_MINNESTAR_USERNAME, MANDRILL_MINNESTAR_PASSWORD - These can be omitted if this app is for testing.
  7. Create the first event by navigating to /admin/events or using the console
  8. Since the app is in a git subtree (src/ directory), you need to push the app to heroku like this

from master

  $ git subtree push --prefix src heroku master

or from a specific branch with a --force

  $ git push heroku `git subtree split --prefix src THE_BRANCH_NAME`:master --force

Automatic Scheduling

Sessionizer can automatically generate a schedule for your event based on preferences expressed by the audience and attempting not to double-book presenters.

To run the scheduler:

  1. Have attendees express interest in sessions. The scheduler attempts to maximize the percentage of sessions attendees can attend.
  2. Create rooms and timeslots for your event. The number of rooms * number of timeslots must be greater than the number of sessions, or the scheduler will fail.
  3. Run the scheduler: rake app:generate_schedule. This takes a long time, so it is probably best to test it out at a low quality setting: quality=0.001 rake app:generate_schedule

Once the scheduler has run, you can see what it produced by visiting /schedule. You'll also see output on the console and it will indicate what percentage of attendees can attend the sessions they are interested in and the amount of presenter overlap (hopefully zero).

You can tweak the schedule by creating PresenterTimeslotRestrictions (if a person can only present during certain timeslots) or by manually swapping scheduled rooms after the schedule has been created (see Session.swap_rooms).

Code of Conduct

Minnestar is dedicated to providing a harassment-free experience for everyone. All conversations and discussions on GitHub (code, commit comments, issues, pull requests) must be respectful and harassment-free. By contributing to this project, you are agreeing to the Code of Conduct.

Contributors

License

This project is open source under the MIT license. See LICENSE for details.

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