With Rails 2/3 it was possible and easy to export (dump) a database to YAML using one of a few plugins (see Best way to export a database table to a YAML file?).
However, none of these plugins seem to be compatible with Rails 4. Is there still an easy way to do this?
The method indicated in the post linked in the question is still valid, but the code is not anymore a plugin: it's the yaml_db gem.
The repository is at https://github.com/yamldb/yaml_db
To dump the db, add the gem to the Gemfile, issue
bundle update
and then issue:
rake db:data:dump
the dump file is:
db/data.yml
If, like me, you hit the error
undefined method `[]=' for #<ActiveRecord::Result:0x007ff34c76d508>
it can be fixed by following the instructions given in this ticket:
https://github.com/ludicast/yaml_db/pull/45
All you should have to do is add
gem 'yaml_db', github: 'jetthoughts/yaml_db', ref: 'fb4b6bd7e12de3cffa93e0a298a1e5253d7e92ba'
to the Gemfile
