ActiveRecord::LookML

This gem is ActiveRecord extension for LookML (Looker).

Installation

Add this line to your application's Gemfile:

group :development do
  gem 'activerecord-lookml'
end

Usage

Generate LookML view from ActiveRecord class

Suppose you have ActiveRecord class as below:

ActiveRecord::Schema.define(version: 2021_05_26_103300) do
  create_table "pulse_onboarding_statuses", force: :cascade do |t|
    t.bigint "user_id", null: false
    t.bigint "company_id", null: false
    t.integer "member_tutorial_state"
    t.boolean "completed", default: false, null: false
    t.datetime "created_at", precision: 6, null: false
    t.datetime "updated_at", precision: 6, null: false
  end
end

class PulseOnboardingStatus < ActiveRecord::Base
  MEMBER_TUTORIAL_STATE_ENUM_HASH = {
    explain_condition_survey: 0,
    ask_condition: 1,
    explain_high_fives: 2,
    try_high_fives: 3,
    done_tutorial: 4,
  }.freeze

  enum member_tutorial_state: MEMBER_TUTORIAL_STATE_ENUM_HASH, _prefix: true
end

You can generate LookML dimension as below.

> puts PulseOnboardingStatus.to_lookml
view: pulse_onboarding_statuses {
  sql_table_name: `wantedly-1371.rdb.pulse_pulse_onboarding_statuses`;;

  dimension: id {
    type: number
    primary_key: yes
    sql: ${TABLE}.id ;;
  }

  dimension: user_id {
    type: number
    sql: ${TABLE}.user_id ;;
  }

  dimension: company_id {
    type: number
    sql: ${TABLE}.company_id ;;
  }

  dimension: member_tutorial_state {
    case: {
      when: {
        sql: ${TABLE}.member_tutorial_state = 0 ;;
        label: "explain_condition_survey"
      }
      when: {
        sql: ${TABLE}.member_tutorial_state = 1 ;;
        label: "ask_condition"
      }
      when: {
        sql: ${TABLE}.member_tutorial_state = 2 ;;
        label: "explain_high_fives"
      }
      when: {
        sql: ${TABLE}.member_tutorial_state = 3 ;;
        label: "try_high_fives"
      }
      when: {
        sql: ${TABLE}.member_tutorial_state = 4 ;;
        label: "done_tutorial"
      }

    }
  }

  dimension: completed {
    type: yesno
    sql: ${TABLE}.completed ;;
  }

  dimension_group: created_at {
    type: time
    sql: ${TABLE}.created_at ;;
  }

  dimension_group: updated_at {
    type: time
    sql: ${TABLE}.updated_at ;;
  }

  set: detail {
    fields: [
      id,
      user_id,
      company_id,
      member_tutorial_state,
      completed,
      created_at_time,
      updated_at_time
    ]
  }
}

Development

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.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/wantedly/activerecord-lookml. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

License

The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the Activerecord::Lookml project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.