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require 'action_view/helpers/tag_helper'
module ActionView
module Helpers
module TranslationHelper
# Delegates to I18n#translate but also performs two additional functions. First, it'll catch MissingTranslationData exceptions
# and turn them into inline spans that contains the missing key, such that you can see in a view what is missing where.
#
# Second, it'll scope the key by the current partial if the key starts with a period. So if you call translate(".foo") from the
# people/index.html.erb template, you'll actually be calling I18n.translate("people.index.foo"). This makes it less repetitive
# to translate many keys within the same partials and gives you a simple framework for scoping them consistently. If you don't
# prepend the key with a period, nothing is converted.
def translate(key, options = {})
options[:raise] = true
translation = I18n.translate(scope_key_by_partial(key), options)
translation.is_a?(Array) ? translation.map { |entry| entry.html_safe } : translation.html_safe
rescue I18n::MissingTranslationData => e
keys = I18n.send(:normalize_translation_keys, e.locale, e.key, e.options[:scope])
content_tag('span', keys.join(', '), :class => 'translation_missing')
end
alias :t :translate
# Delegates to I18n.localize with no additional functionality.
def localize(*args)
I18n.localize(*args)
end
alias :l :localize
private
def scope_key_by_partial(key)
if (key.respond_to?(:join) ? key.join : key.to_s).first == "."
template.path_without_format_and_extension.gsub(%r{/_?}, ".") + key.to_s
else
key
end
end
end
end
end
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