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I'm trying to create a rails 4.0 app using CouchDB both locally and deployed on heroku. I have CouchDB installed and running locally and the Cloudant addon for heroku. Heroku complains that DATABASE_URL is invalid at the rake assets:precompilestep. When I run this locally (as well as when I run rails server) I get the obvious error:

Specified 'sqlite3' for database adapter, but the gem is not loaded

However, I don't want to use sqlite3, I want to use CouchDB. For lack of a better known option, I'm using the couchrest_model gem, and I have it in my Gemfile as gem 'couchrest_model'. Their README goes on to say,

CouchRest Model is configured to work out the box with no configuration as long as your CouchDB instance is running on the default port (5984) on localhost.

I can understand why it wouldn't work with Heroku since I may need additional configuration (although I'm not sure what that would be -- I assume Heroku takes care of that automatically), but CouchDB is running on localhost:5984 on my own machine.

I have noticed that config/database.yml has references to sqlite3 for development/test/production. If I comment these out, I get complaints not specifying any connection adapter.

What do I have to do to at least get the app running with CouchDB locally and ideally with Heroku as well?

Explosion Pills
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  • According to [this](https://rubygems.org/search?utf8=%E2%9C%93&query=CouchDB), there isn't a definite couchdb adapter gem you can use. I would try the most popular one, but it looks outdated. – Jason Kim Nov 27 '13 at 21:19
  • @dmtri.com I'm really not familiar with rails ... what exactly are you suggesting that I do? – Explosion Pills Nov 27 '13 at 21:30

1 Answers1

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You should create a config/couchdb.yml and set up your configuration something like below (check out Configuration section on the couchrest_model documentation

development:
  protocol: 'http'
  host: localhost
  port: 5984
  prefix: project
  suffix: development
  username: test
  password: user

and for heroku, you might want to specify the Cloudant host

production:
  protocol: 'https'
  host: sample.cloudant.com
  port: 5984
  prefix: project
  suffix: test
  username: production
  password: user

Something like that

Also, you need to get rid of Active Record

In config/application.rb, delete require rails/all and replace it with

require "action_controller/railtie"
require "action_mailer/railtie"
require "sprockets/railtie"
require "rails/test_unit/railtie"

In config/environments/development.rb, comment out

# config.active_record.migration_error = :page_load

And then you should be able to delete config/database.yml and remove sqlite3 gem without getting Active Record errors

Check out this SO post about disabling active record for rails 4 as well

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strivedi183
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