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| 1 | - | # inspired by: https://github.com/rack/rack-contrib/blob/master/lib/rack/contrib/locale.rb |
| 1 | + | # inspired by: https://github.com/rack/rack-contrib/blob/master/lib/rack/contrib/locale.rb |
| 2 | - | |
| 2 | + | |
| 3 | - | class LocaleMiddleware |
| 3 | + | class LocaleMiddleware |
| 4 | - | def initialize(app) |
| 4 | + | def initialize(app) |
| 5 | - | @app = app |
| 5 | + | @app = app |
| 6 | - | end |
| 6 | + | end |
| 7 | - | |
| 7 | + | |
| 8 | - | def call(env) |
| 8 | + | def call(env) |
| 9 | - | old_locale = I18n.locale |
| 9 | + | old_locale = I18n.locale |
| 10 | - | |
| 10 | + | |
| 11 | - | begin |
| 11 | + | begin |
| 12 | - | locale = accept_locale(env) || I18n.default_locale |
| 12 | + | locale = accept_locale(env) || I18n.default_locale |
| 13 | - | env['rack.locale'] = I18n.locale = locale.to_s |
| 13 | + | env['rack.locale'] = I18n.locale = locale.to_s |
| 14 | - | status, headers, body = @app.call(env) |
| 14 | + | status, headers, body = @app.call(env) |
| 15 | - | headers['Content-Language'] = I18n.locale.to_s |
| 15 | + | headers['Content-Language'] = I18n.locale.to_s |
| 16 | - | [status, headers, body] |
| 16 | + | [status, headers, body] |
| 17 | - | ensure |
| 17 | + | ensure |
| 18 | - | I18n.locale = old_locale |
| 18 | + | I18n.locale = old_locale |
| 19 | - | end |
| 19 | + | end |
| 20 | - | end |
| 20 | + | end |
| 21 | - | |
| 21 | + | |
| 22 | - | private |
| 22 | + | private |
| 23 | - | |
| 23 | + | |
| 24 | - | # http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4 |
| 24 | + | # http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4 |
| 25 | - | def accept_locale(env) |
| 25 | + | def accept_locale(env) |
| 26 | - | accept_langs = env["HTTP_ACCEPT_LANGUAGE"] |
| 26 | + | accept_langs = env["HTTP_ACCEPT_LANGUAGE"] |
| 27 | - | return if accept_langs.blank? |
| 27 | + | return if accept_langs.blank? |
| 28 | - | |
| 28 | + | |
| 29 | - | languages_and_qvalues = accept_langs.split(",").map { |l|
|
| 29 | + | languages_and_qvalues = accept_langs.split(",").map { |l|
|
| 30 | - | l += ';q=1.0' unless l =~ /;q=\d+(?:\.\d+)?$/ |
| 30 | + | l += ';q=1.0' unless l =~ /;q=\d+(?:\.\d+)?$/ |
| 31 | - | l.split(';q=')
|
| 31 | + | l.split(';q=')
|
| 32 | - | } |
| 32 | + | } |
| 33 | - | |
| 33 | + | |
| 34 | - | # gets tuple of supported locale with highest q-value |
| 34 | + | # gets tuple of supported locale with highest q-value |
| 35 | - | lang = [nil, 0] |
| 35 | + | lang = [nil, 0] |
| 36 | - | languages_and_qvalues.each do |(locale, qvalue)| |
| 36 | + | languages_and_qvalues.each do |(locale, qvalue)| |
| 37 | - | next if locale == '*' |
| 37 | + | next if locale == '*' |
| 38 | - | # locale could be en-GB and we only use en |
| 38 | + | # locale could be en-GB and we only use en |
| 39 | - | locale = locale.split('-').first.try(:to_sym)
|
| 39 | + | locale = locale.split('-').first.try(:to_sym)
|
| 40 | - | # check if locale is supported |
| 40 | + | # check if locale is supported |
| 41 | - | next unless I18n.available_locales.include?(locale) |
| 41 | + | next unless I18n.available_locales.include?(locale) |
| 42 | - | # return the new locale if its priority is higher |
| 42 | + | # return the new locale if its priority is higher |
| 43 | - | lang = [locale, qvalue] if qvalue.to_f >= lang[1].to_f |
| 43 | + | lang = [locale, qvalue] if qvalue.to_f >= lang[1].to_f |
| 44 | - | end |
| 44 | + | end |
| 45 | - | lang.first |
| 45 | + | lang.first |
| 46 | - | end |
| 46 | + | end |
| 47 | - | end |
| 47 | + | end |
| 48 | ~ |
