Module: SimplesIdeias::I18n

Extended by:
I18n
Included in:
I18n
Defined in:
lib/i18n-js.rb,
lib/i18n-js/railtie.rb,
lib/i18n-js/version.rb

Defined Under Namespace

Modules: Version Classes: Railtie

Constant Summary collapse

MERGER =

deep_merge by Stefan Rusterholz, see www.ruby-forum.com/topic/142809

proc { |key, v1, v2| Hash === v1 && Hash === v2 ? v1.merge(v2, &MERGER) : v2 }

Instance Method Summary collapse

Instance Method Details

#config ⇒ Object

Load configuration file for partial exporting and custom output directory



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# File 'lib/i18n-js.rb', line 41

def config
  HashWithIndifferentAccess.new YAML.load_file(config_file)
end

#config? ⇒ Boolean

Check if configuration file exist

Returns:

  • (Boolean) 


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# File 'lib/i18n-js.rb', line 46

def config?
  File.file? config_file
end

#config_file ⇒ Object 



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# File 'lib/i18n-js.rb', line 12

def config_file
  Rails.root.join("config/i18n-js.yml")
end

#deep_merge(target, hash) ⇒ Object

:nodoc:



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# File 'lib/i18n-js.rb', line 114

def deep_merge(target, hash) # :nodoc:
  target.merge(hash, &MERGER)
end

#deep_merge!(target, hash) ⇒ Object

:nodoc:



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# File 'lib/i18n-js.rb', line 118

def deep_merge!(target, hash) # :nodoc:
  target.merge!(hash, &MERGER)
end

#export! ⇒ Object

Export translations to JavaScript, considering settings from configuration file



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# File 'lib/i18n-js.rb', line 22

def export!
  if config?
    for options in config[:translations]
      options.reverse_merge!(:only => "*")

      if options[:only] == "*"
        save translations, options[:file]
      else
        result = scoped_translations(options[:only])
        save result, options[:file] unless result.empty?
      end
    end
  else
    save translations, "public/javascripts/translations.js"
  end
end

#filter(translations, scopes) ⇒ Object

Filter translations according to the specified scope.



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# File 'lib/i18n-js.rb', line 88

def filter(translations, scopes)
  scopes = scopes.split(".") if scopes.is_a?(String)
  scopes = scopes.clone
  scope = scopes.shift

  if scope == "*"
    results = {}
    translations.each do |scope, translations|
      tmp = scopes.empty? ? translations : filter(translations, scopes)
      results[scope.to_sym] = tmp unless tmp.nil?
    end
    return results
  elsif translations.has_key?(scope.to_sym)
    return {scope.to_sym => scopes.empty? ? translations[scope.to_sym] : filter(translations[scope.to_sym], scopes)}
  end
  nil
end

#javascript_file ⇒ Object 



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# File 'lib/i18n-js.rb', line 16

def javascript_file
  Rails.root.join("public/javascripts/i18n.js")
end

#save(translations, file) ⇒ Object

Convert translations to JSON string and save file.



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# File 'lib/i18n-js.rb', line 65

def save(translations, file)
  file = Rails.root.join(file)
  FileUtils.mkdir_p File.dirname(file)

  File.open(file, "w+") do |f|
    f << %(var I18n = I18n || {};\n)
    f << %(I18n.translations = );
    f << translations.to_json
    f << %(;)
  end
end

#scoped_translations(scopes) ⇒ Object

:nodoc:



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# File 'lib/i18n-js.rb', line 77

def scoped_translations(scopes) # :nodoc:
  result = {}

  [scopes].flatten.each do |scope|
    deep_merge! result, filter(translations, scope)
  end

  result
end

#setup! ⇒ Object

Copy configuration and JavaScript library files to config/i18n-js.yml and public/javascripts/i18n.js.



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# File 'lib/i18n-js.rb', line 52

def setup!
  FileUtils.cp File.dirname(__FILE__) + "/../source/i18n.js", javascript_file
  FileUtils.cp(File.dirname(__FILE__) + "/../source/i18n-js.yml", config_file) unless config?
end

#translations ⇒ Object

Initialize and return translations



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# File 'lib/i18n-js.rb', line 107

def translations
  ::I18n.backend.instance_eval do
    init_translations unless initialized?
    translations
  end
end

#update! ⇒ Object

Retrieve an updated JavaScript library from Github.



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# File 'lib/i18n-js.rb', line 58

def update!
  require "open-uri"
  contents = open("http://github.com/fnando/i18n-js/raw/master/lib/i18n.js").read
  File.open(javascript_file, "w+") {|f| f << contents}
end