The participatory democracy framework.

Free Open-Source participatory democracy, citizen participation and open government for cities and organizations

Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. Installing these libraries will provide you a generator and gems to help you develop web applications like the ones found on example applications or like our demo application.

All members of the Decidim community agree with Decidim Social Contract or Code of Democratic Guarantees.

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Code quality

Test suite

See all

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What do you need to do?

• Official Documentation

• Getting started with Decidim

• Contribute to the project

• Modules

• Create & browse development app

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Getting started with Decidim

TLDR: install gem, generate a Ruby on Rails app, enjoy.

gem install decidim
decidim decidim_application

We’ve set up a guide on how to install, set up and upgrade Decidim. See the Getting started guide.

How to contribute

See Contributing.

Modules

If you need to have some features that we don’t have yet, we recommend that you make a module. This is a Ruby on Rails engine with some APIs specific to Decidim (for registering with the menus, integration with spaces like Participatory Processes or Assemblies, with /admin or /api, etc).

As a base you can use these modules, although check first that the version is compatible with your current Decidim version. Also you should know that until v1.0.0 We’re under development and these internal APIs can change. We recommend that you extensively test your module.

See Modules page on Decidim.org.

Authorizations Strategies

One specific thing regarding these kind of applications is the authorization/verification logic. Here are some examples:

• Barcelona (City)

• Calafell

• DIBA (Barcelona Province)

• Gavà

• Hospitalet de Llobregat

• Malgrat de Mar

• Mataró

• Pamplona

• Reus

• Sabadell

• Sant Cugat

• Terrassa

• Vilanova i la Geltrú

Other special verifications:

• Podemos

• FundAction

• CSV emails

• Access Requests

Following our license

If you plan to release your application you’ll need to publish it using the same license: GPL Affero 3. We recommend doing that on GitHub before publishing, you can read more on "Being Open Source From Day One is Especially Important for Government Projects". If you have any trouble you can contact us on Gitter.

Example applications

Since Decidim is a ruby gem, you can check out the dependent repositories to see how many applications are on the wild or tests that other developers have made. Here’s a partial list with some of the projects that have used Decidim:

• Demo

• Decidim Barcelona - View code

• L’H ON Participa - View code

• Decidim Terrassa - View code

• Decidim Sabadell - View code

• Decidim Gavà - View code

• Decidim Sant Cugat - View code

• Vilanova Participa - View code

• Erabaki Pamplona - View code

• Decidim Mataró - View code

• MetaDecidim - View Code

Security

Security is very important to us. If you have any issue regarding security, please disclose the information responsibly by sending an email to security [at] decidim [dot] org and not by creating a github/metadecidim issue. We appreciate your effort to make Decidim more secure. See full security policy.