AddIdProperty

Constants

Files

• lib/neo4j/migration.rb:25

Methods

#default_path

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def default_path
  Rails.root if defined? Rails
end

#initialize

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def initialize(path = default_path)
  @models_filename = File.join(joined_path(path), 'add_id_property.yml')
end

#joined_path

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def joined_path(path)
  File.join(path.to_s, 'db', 'neo4j-migrate')
end

#migrate

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def migrate
  models = ActiveSupport::HashWithIndifferentAccess.new(YAML.load_file(models_filename))[:models]
  output 'This task will add an ID Property every node in the given file.'
  output 'It may take a significant amount of time, please be patient.'
  models.each do |model|
    output
    output
    output "Adding IDs to #{model}"
    add_ids_to model.constantize
  end
end

#models_filename

Returns the value of attribute models_filename

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def models_filename
  @models_filename
end

#output

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def output(string = '')
  puts string unless !!ENV['silenced']
end

#print_output

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def print_output(string)
  print string unless !!ENV['silenced']
end

#setup

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def setup
  FileUtils.mkdir_p('db/neo4j-migrate')

  return if File.file?(models_filename)

  File.open(models_filename, 'w') do |file|
    message = <<MESSAGE
# Provide models to which IDs should be added.
# # It will only modify nodes that do not have IDs. There is no danger of overwriting data.
# # models: [Student,Lesson,Teacher,Exam]\nmodels: []
MESSAGE
    file.write(message)
  end
end