Ransack is a great gem. You can consider it as a new better (with sparkles!) version of MetaSearch. Unfortunately, it seems that it is not translating ActiveRecord attributes, when they are nested.
For example:
module System
class Setting < ActiveRecord::Base
validates :name,
presence: true
end
end
We have a name attribute on a System::Setting model. According to Rails doc translation yaml for such a structure should be similar to this one:
pl:
activerecord:
attributes:
"system/setting":
name: Nazwa
Unluckily this won't work (it did with MetaSearch). When you look into Ransack /lib/ransack/translate.rb file, you will find such a piece of code (around line 25):
defaults = base_ancestors.map do |klass|
:"ransack.attributes.#{klass.model_name.singular}.#{original_name}"
end
You can see, that Ransack is enclosing all attributes in it's own namespace. I can't do this, since I have gems that use "original" Rails convention (activerecord.attributes), so I had to replace those lines with:
defaults = []
base_ancestors.map do |klass|
defaults << :"activerecord.attributes.#{klass.model_name.i18n_key}.#{original_name}"
defaults << :"ransack.attributes.#{klass.model_name.singular}.#{original_name}"
end
After that, Ransack is supporting both namespaces. The whole translate file that you should include in your project should look like this:
I18n.load_path += Dir[File.join(File.dirname(__FILE__), 'locale', '*.yml')]
# This is a temporary workaround for this issue:
# https://github.com/ernie/ransack/issues/273
# It allows names to be translated in sort_link @search, :name based on their
# activerecord.attributes scope
module Ransack
module Translate
def self.attribute(key, options = {})
unless context = options.delete(:context)
raise ArgumentError, "A context is required to translate attributes"
end
original_name = key.to_s
base_class = context.klass
base_ancestors = base_class.ancestors.select { |x| x.respond_to?(:model_name) }
predicate = Predicate.detect_from_string(original_name)
attributes_str = original_name.sub(/_#{predicate}$/, '')
attribute_names = attributes_str.split(/_and_|_or_/)
combinator = attributes_str.match(/_and_/) ? :and : :or
defaults = []
base_ancestors.map do |klass|
defaults << :"activerecord.attributes.#{klass.model_name.i18n_key}.#{original_name}"
defaults << :"ransack.attributes.#{klass.model_name.singular}.#{original_name}"
end
translated_names = attribute_names.map do |attr|
attribute_name(context, attr, options[:include_associations])
end
interpolations = {}
interpolations[:attributes] = translated_names.join(" #{Translate.word(combinator)} ")
if predicate
defaults << "%{attributes} %{predicate}"
interpolations[:predicate] = Translate.predicate(predicate)
else
defaults << "%{attributes}"
end
defaults << options.delete(:default) if options[:default]
options.reverse_merge! :count => 1, :default => defaults
I18n.translate(defaults.shift, options.merge(interpolations))
end
end
end