Julia helps you out to create flexible builders to easily export your queries to csv (for now).
Add this line to your application's Gemfile:
gem 'julia_builder'
And then execute:
$ bundle
Or install it yourself as:
$ gem install julia_builder
For non rails projects
require 'julia'
-
Create your own builder class, inherit from
Julia::Builder
and configure your csv columns.class UserCsv < Julia::Builder # specify column's header and value column 'Birthday', :dob # header equals 'Birthday' and the value will be on `user.dbo` # when header and value are the same, no need to duplicate it. column :name # header equals 'name', value will be `user.name` # specify many columns at once columns :name, :lastname, :dob # when you need to do some extra work on the value you can pass a proc. column 'Full name', -> { "#{ name.capitalize } #{ last_name.capitalize }" } # or you can pass a block column 'Type' do |user| user.class.name end # include your own mixins include ActionView::Helpers::DateHelper column 'age' do |c| time_ago_in_words c.dob end end
-
Now you can use your builder to generate your csv out of a query like:
users = User.all UserCsv.build(users) # or UserCsv.build(users, <csv options>) # e.g. no headers UserCsv.build(users, write_headers: false)
Csv options could be anything CSV::new understands, but they are optional.
-
Enjoy
After checking out the repo, run bin/setup
to install dependencies. Then, run rake spec
to run the tests. You can also run bin/console
for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install
. To release a new version, update the version number in version.rb
, and then run bundle exec rake release
, which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/stevenbarragan/julia_builder/issues. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
The gem is available as open source under the terms of the MIT License.