Module: Translateable::ClassMethods

Defined in:
lib/translateable.rb

Instance Method Summary collapse

Instance Method Details

#database_connection_exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/translateable.rb', line 34

def database_connection_exists?
  ActiveRecord::Base.connection_pool.with_connection(&:active?)
rescue StandardError
  false
end

#define_translateable_methods(attr) ⇒ Object 



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# File 'lib/translateable.rb', line 40

def define_translateable_methods(attr)
  define_method("#{attr}_fetch_translateable") do
    value = self[attr]
    return value.with_indifferent_access if !value.nil? && !value.empty?
    (new_record? ? { I18n.locale => '' } : {}).with_indifferent_access
  end

  define_method(Translateable.translateable_attribute_by_name(attr)) do
    value = send("#{attr}_fetch_translateable")
    value.map { |k, v| OpenStruct.new(locale: k, data: v) }
  end

  define_method("#{attr}_translateable_attributes=") do |arg|
    self[attr] = arg.each_with_object({}) do |i, obj|
      hash = i.second
      next if hash[:_destroy]
      obj[hash[:locale]] = hash[:data]
    end
  end

  define_method(attr) do |**args|
    value = send("#{attr}_fetch_translateable")
    value[I18n.locale] || (value[I18n.default_locale] unless args[:strict]) || (value.values.first unless args[:strict])
  end

  define_method("#{attr}=") do |arg|
    value = arg.is_a?(Hash) ? arg : (self[attr] || {}).merge(I18n.locale => arg)
    self[attr] = value
  end
end

#define_translateable_strong_params(*attrs) ⇒ Object 



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# File 'lib/translateable.rb', line 28

def define_translateable_strong_params(*attrs)
  define_singleton_method('translateable_permitted_attributes') do
    attrs.each_with_object([]) { |i, obj| obj << { "#{i}_translateable_attributes" => i(locale data _destroy) } }
  end
end

#translateable(*attrs) ⇒ Object 



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# File 'lib/translateable.rb', line 13

def translateable(*attrs)
  attrs.each do |attr|
    translateable_sanity_check(attr)
    define_translateable_methods(attr)
  end
  define_translateable_strong_params(*attrs)
end

#translateable_sanity_check(attr) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/translateable.rb', line 21

def translateable_sanity_check(attr)
  return if ENV['DISABLE_TRANSLATEABLE_SANITY_CHECK']
  return unless database_connection_exists?
  attr = attr.to_s
  raise ArgumentError, "no such column '#{attr}' in '#{name}' model" unless column_names.include?(attr)
end