niquola/fhir-ruby

Fhir::Ruby

Code-Generation library for Fast Healthcare Interoperability Resources (FHIR), which defines a set of 'resources' to represent health and healthcare administration-related information.

http://hl7.org/implement/standards/fhir/

Installation

Add this line to your application's Gemfile:

gem 'fhir-ruby'

And then execute:

$ bundle

Or install it yourself as:

$ gem install fhir-ruby

Usage

create code-generation file with following syntax and run fhir myfile.rb for codegeneration

Example:

generate do |graph|
  models_folder = File.dirname(__FILE__)+ '/models/fhir'
  migrations_folder = File.dirname(__FILE__)+ '/migrations'
  FileUtils.rm_rf(models_folder)
  FileUtils.rm_rf(migrations_folder)
  FileUtils.mkdir_p(migrations_folder)

  graph.rule(%w[MedicationStatement dosage site coding],  max: '1')
  graph.rule(%w[MedicationStatement dosage route coding], max: '1')
  graph.rule(%w[MedicationStatement dosage method coding], max: '1')
  graph.rule(%w[MedicationStatement identifier], max: '1')
  graph.rule(%w[MedicationStatement reasonNotGiven coding], max: '1')
  graph.rule(%w[MedicationStatement medication], max: '1', embed: true)

  ExpandGraph.new(graph).expand


  branch = graph.selection.branch(['MedicationStatement'])
  .reject { |node| %w[contained extension].include?(node.name) }

  File.open(File.join(migrations_folder, 'schema.rb'), 'w') do |f|
    f.write  %Q[execute "drop schema fhir cascade; create schema fhir;"\n]
    f.write  branch.tables
    .template(path: "#{FHIR_PATH}/templates/migration.rb.erb")
    .render(0)
  end

  branch
  .models
  .template(path: "#{FHIR_PATH}/templates/model.rb.erb")
  .file(models_folder) {|n| "#{n.class_file_name}.rb" }
end

For more details see example_project direcotory.

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request