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Merge pull request #39989 from jonathanhefner/translate-refactor 

Improve Action View `translate` helper
This commit is contained in:
Eugene Kenny 2020-09-16 17:01:45 +01:00 committed by GitHub
parent 46ea76980f d81926fdac
commit 0b244ff44c
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2 changed files with 150 additions and 70 deletions
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143
actionview/lib/action_view/helpers/translation_helper.rb
View File

@ -1,8 +1,7 @@
# frozen_string_literal: true
require "action_view/helpers/tag_helper"
require "active_support/core_ext/string/access"
require "i18n/exceptions"
require "active_support/core_ext/symbol/starts_ends_with"
module ActionView
# = Action View Translation Helpers
@ -69,78 +68,43 @@ module ActionView
# resolved against.
#
def translate(key, **options)
unless options[:default].nil?
remaining_defaults = Array.wrap(options.delete(:default)).compact
options[:default] = remaining_defaults unless remaining_defaults.first.kind_of?(Symbol)
return key.map { |k| translate(k, **options) } if key.is_a?(Array)
alternatives = if options.key?(:default)
options[:default].is_a?(Array) ? options.delete(:default).compact : [options.delete(:default)]
end
# If the user has explicitly decided to NOT raise errors, pass that option to I18n.
# Otherwise, tell I18n to raise an exception, which we rescue further in this method.
# Note: `raise_error` refers to us re-raising the error in this method. I18n is forced to raise by default.
if options[:raise] == false
raise_error = false
i18n_raise = false
else
raise_error = options[:raise] || ActionView::Base.raise_on_missing_translations
i18n_raise = true
end
options[:raise] = true if options[:raise].nil? && ActionView::Base.raise_on_missing_translations
default = MISSING_TRANSLATION
fully_resolved_key = scope_key_by_partial(key)
if html_safe_translation_key?(key)
html_safe_options = options.dup
options.except(*I18n::RESERVED_KEYS).each do |name, value|
unless name == :count && value.is_a?(Numeric)
html_safe_options[name] = ERB::Util.html_escape(value.to_s)
end
translation = while key
if alternatives.blank? && !options[:raise].nil?
default = NO_DEFAULT # let I18n handle missing translation
end
html_safe_options[:default] = MISSING_TRANSLATION unless html_safe_options[:default].blank?
key = scope_key_by_partial(key)
first_key ||= key
translation = I18n.translate(fully_resolved_key, **html_safe_options.merge(raise: i18n_raise))
if translation.equal?(MISSING_TRANSLATION)
translated_text = options[:default].first
elsif translation.respond_to?(:map)
translated_text = translation.map { |element| element.respond_to?(:html_safe) ? element.html_safe : element }
if html_safe_translation_key?(key)
html_safe_options ||= html_escape_translation_options(options)
translated = I18n.translate(key, **html_safe_options, default: default)
break html_safe_translation(translated) unless translated.equal?(MISSING_TRANSLATION)
else
translated_text = translation.respond_to?(:html_safe) ? translation.html_safe : translation
end
else
translated_text = I18n.translate(fully_resolved_key, **options.merge(raise: i18n_raise))
end
if block_given?
yield(translated_text, fully_resolved_key)
else
translated_text
end
rescue I18n::MissingTranslationData => e
if remaining_defaults.present?
translate remaining_defaults.shift, **options.merge(default: remaining_defaults)
else
raise e if raise_error
keys = I18n.normalize_keys(e.locale, e.key, e.options[:scope])
title = +"translation missing: #{keys.join('.')}"
interpolations = options.except(:default, :scope)
if interpolations.any?
title << ", " << interpolations.map { |k, v| "#{k}: #{ERB::Util.html_escape(v)}" }.join(", ")
translated = I18n.translate(key, **options, default: default)
break translated unless translated.equal?(MISSING_TRANSLATION)
end
return title unless ActionView::Base.debug_missing_translation
break alternatives.first if alternatives.present? && !alternatives.first.is_a?(Symbol)
translated_fallback = content_tag("span", keys.last.to_s.titleize, class: "translation_missing", title: title)
if block_given?
yield(translated_fallback, scope_key_by_partial(key))
else
translated_fallback
end
key = alternatives&.shift
end
if key.nil?
translation = missing_translation(first_key, options)
key = first_key
end
block_given? ? yield(translation, key) : translation
end
alias :t :translate
@ -157,13 +121,19 @@ module ActionView
MISSING_TRANSLATION = Object.new
private_constant :MISSING_TRANSLATION
NO_DEFAULT = [].freeze
private_constant :NO_DEFAULT
def self.i18n_option?(name)
(@i18n_option_names ||= I18n::RESERVED_KEYS.to_set).include?(name)
end
def scope_key_by_partial(key)
stringified_key = key.to_s
if stringified_key.start_with?(".")
if key.start_with?(".")
if @current_template&.virtual_path
@_scope_key_by_partial_cache ||= {}
@_scope_key_by_partial_cache[@current_template.virtual_path] ||= @current_template.virtual_path.gsub(%r{/_?}, ".")
"#{@_scope_key_by_partial_cache[@current_template.virtual_path]}#{stringified_key}"
"#{@_scope_key_by_partial_cache[@current_template.virtual_path]}#{key}"
else
raise "Cannot use t(#{key.inspect}) shortcut because path is not available"
end
@ -172,8 +142,47 @@ module ActionView
end
end
def html_escape_translation_options(options)
return options if options.empty?
html_safe_options = options.dup
options.each do |name, value|
unless TranslationHelper.i18n_option?(name) || (name == :count && value.is_a?(Numeric))
html_safe_options[name] = ERB::Util.html_escape(value.to_s)
end
end
html_safe_options
end
def html_safe_translation_key?(key)
/(?:_|\b)html\z/.match?(key.to_s)
/(?:_|\b)html\z/.match?(key)
end
def html_safe_translation(translation)
if translation.respond_to?(:map)
translation.map { |element| element.respond_to?(:html_safe) ? element.html_safe : element }
else
translation.respond_to?(:html_safe) ? translation.html_safe : translation
end
end
def missing_translation(key, options)
keys = I18n.normalize_keys(options[:locale] || I18n.locale, key, options[:scope])
title = +"translation missing: #{keys.join(".")}"
options.each do |name, value|
unless name == :scope
title << ", " << name.to_s << ": " << ERB::Util.html_escape(value)
end
end
if ActionView::Base.debug_missing_translation
content_tag("span", keys.last.to_s.titleize, class: "translation_missing", title: title)
else
title
end
end
end
end

77
actionview/test/template/translation_helper_test.rb
View File

@ -49,9 +49,18 @@ class TranslationHelperTest < ActiveSupport::TestCase
end
def test_delegates_setting_to_i18n
assert_called_with(I18n, :translate, [:foo, locale: "en", raise: true], returns: "") do
matcher_called = false
matcher = ->(key, options) do
matcher_called = true
assert_equal :foo, key
assert_equal "en", options[:locale]
end
I18n.stub(:translate, matcher) do
translate :foo, locale: "en"
end
assert matcher_called
end
def test_delegates_localize_to_i18n
@ -102,6 +111,15 @@ class TranslationHelperTest < ActiveSupport::TestCase
ActionView::Base.raise_on_missing_translations = false
end
def test_raise_arg_overrides_raise_config_option
ActionView::Base.raise_on_missing_translations = true
expected = "translation missing: en.translations.missing"
assert_equal expected, translate(:"translations.missing", raise: false)
ensure
ActionView::Base.raise_on_missing_translations = false
end
def test_raises_missing_translation_message_with_raise_option
assert_raise(I18n::MissingTranslationData) do
translate(:"translations.missing", raise: true)
@ -164,6 +182,16 @@ class TranslationHelperTest < ActiveSupport::TestCase
assert_equal expected, view.render(template: "translations/templates/missing_yield_block").strip
end
def test_missing_translation_scoped_by_partial_yield_block_without_debug_wrapper
old_debug_missing_translation = ActionView::Base.debug_missing_translation
ActionView::Base.debug_missing_translation = false
expected = "translations.templates.missing_yield_block.missing: translation missing: en.translations.templates.missing_yield_block.missing"
assert_equal expected, view.render(template: "translations/templates/missing_yield_block").strip
ensure
ActionView::Base.debug_missing_translation = old_debug_missing_translation
end
def test_missing_translation_with_default_scoped_by_partial_yield_block
expected = "translations.templates.missing_with_default_yield_block.missing: Default"
assert_equal expected, view.render(template: "translations/templates/missing_with_default_yield_block").strip
@ -210,15 +238,26 @@ class TranslationHelperTest < ActiveSupport::TestCase
end
end
def test_translate_with_default_and_raise_false
translation = translate(:"translations.missing", default: :"translations.foo", raise: false)
assert_equal "Foo", translation
end
def test_translate_with_default_named_html
translation = translate(:'translations.missing', default: :'translations.hello_html')
assert_equal "<a>Hello World</a>", translation
assert_equal true, translation.html_safe?
end
def test_translate_with_default_named_html_and_raise_false
translation = translate(:"translations.missing", default: :"translations.hello_html", raise: false)
assert_equal "<a>Hello World</a>", translation
assert_predicate translation, :html_safe?
end
def test_translate_with_missing_default
translation = translate(:'translations.missing', default: :'translations.missing_html')
expected = '<span class="translation_missing" title="translation missing: en.translations.missing_html">Missing Html</span>'
translation = translate(:"translations.missing", default: :also_missing)
expected = '<span class="translation_missing" title="translation missing: en.translations.missing">Missing</span>'
assert_equal expected, translation
assert_equal true, translation.html_safe?
end
@ -229,6 +268,12 @@ class TranslationHelperTest < ActiveSupport::TestCase
end
end
def test_translate_with_html_key_and_missing_default_and_raise_option
assert_raise(I18n::MissingTranslationData) do
translate(:"translations.missing_html", default: :"translations.missing_html", raise: true)
end
end
def test_translate_with_two_defaults_named_html
translation = translate(:'translations.missing', default: [:'translations.missing_html', :'translations.hello_html'])
assert_equal "<a>Hello World</a>", translation
@ -289,6 +334,32 @@ class TranslationHelperTest < ActiveSupport::TestCase
assert_nil translation
end
def test_translate_bulk_lookup
translations = translate([:"translations.foo", :"translations.foo"])
assert_equal ["Foo", "Foo"], translations
end
def test_translate_bulk_lookup_with_default
translations = translate([:"translations.missing", :"translations.missing"], default: :"translations.foo")
assert_equal ["Foo", "Foo"], translations
end
def test_translate_bulk_lookup_html
translations = translate([:"translations.html", :"translations.hello_html"])
assert_equal ["<a>Hello World</a>", "<a>Hello World</a>"], translations
translations.each do |translation|
assert_predicate translation, :html_safe?
end
end
def test_translate_bulk_lookup_html_with_default
translations = translate([:"translations.missing", :"translations.missing"], default: :"translations.html")
assert_equal ["<a>Hello World</a>", "<a>Hello World</a>"], translations
translations.each do |translation|
assert_predicate translation, :html_safe?
end
end
def test_translate_does_not_change_options
options = {}
if RUBY_VERSION >= "2.7"