ActiveExt

Usage

This project adds some new methods to the core active_record classes

To use active-ext either intall directly

gem install darthjee-active_ext

or add it to Gemfile

gem 'darthjee-active_ext'

bundle install darthjee-active_ext

methods added

ActiveRecord::Relation

ActiveRecord::Schema.define do
  self.verbose = false

  create_table :documents, :force => true do |t|
    t.string :status
    t.boolean :active, default: false
    t.timestamps null: true
  end
end


class Document < ActiveRecord::Base
  scope :with_error, -> { where(status: :error) }
  scope :with_success, -> { where(status: :success) }
  scope :active, -> { where(active: true) }
end

2.times { Document.with_error.create }
Document.active.with_error.create
Document.active.with_success.create

#percentage

Returns the percentage of objects of a certain scope within another scope

Document.percentage(:with_error)
0.75

Document.percentage(status: :error)
0.75

Document.percentage("status = 'error'")
0.75

Works also when using nested scopes

Document.active.percentage(:with_error)
0.5

#pluck_as_json

Just as pluck returns some specifc columns, pluck_as_json returns the same coluns with keys to identify

Document.pluck(:id, :active)
[[1, true], [2, true]]

Document.pluck_as_json(:id, :active)
[
  {id: 18, active: false},
  {id: 19, active: false},
  {id: 20, active: true},
  {id: 21, active: true}
]