Add method ApplicationEachValidator::Validation#str_value

app/validators/application_each_validator.rb

@@ -35,5 +35,9 @@ class ApplicationEachValidator < ActiveModel::EachValidator
       error(*args)
       throw :stop_validating
     end
+
+    def str_value
+      @str_value ||= String(value).dup.freeze
+    end
   end
 end

app/validators/codename_validator.rb

@@ -8,10 +8,10 @@ class CodenameValidator < ApplicationEachValidator
     MAX = 36
 
     def perform
-      error! :blank if value.to_s.blank?
+      error! :blank if str_value.blank?
       error! :codename unless CODENAME_RE.match? value
-      error! :too_short, count: MIN if value.to_s.length < MIN
-      error! :too_long,  count: MAX if value.to_s.length > MAX
+      error! :too_short, count: MIN if str_value.length < MIN
+      error! :too_long,  count: MAX if str_value.length > MAX
     end
   end
 end

app/validators/good_big_text_validator.rb

@@ -7,8 +7,8 @@ class GoodBigTextValidator < GoodTextValidator
 
     def perform
       super
-      error :too_short, count: MIN if value.to_s.length < MIN
-      error :too_long,  count: MAX if value.to_s.length > MAX
+      error :too_short, count: MIN if str_value.length < MIN
+      error :too_long,  count: MAX if str_value.length > MAX
     end
   end
 end

app/validators/good_small_text_validator.rb

@@ -7,8 +7,8 @@ class GoodSmallTextValidator < GoodTextValidator
 
     def perform
       super
-      error :too_short, count: MIN if value.to_s.length < MIN
-      error :too_long,  count: MAX if value.to_s.length > MAX
+      error :too_short, count: MIN if str_value.length < MIN
+      error :too_long,  count: MAX if str_value.length > MAX
     end
   end
 end

app/validators/good_text_validator.rb

@@ -5,7 +5,7 @@ class GoodTextValidator < ApplicationEachValidator
     GOOD_TEXT_RE = /\A[^\s](.*[^\s])?\z/.freeze
 
     def perform
-      error :blank if value.to_s.blank?
+      error :blank if str_value.blank?
       error :good_text unless GOOD_TEXT_RE.match? value
     end
   end

app/validators/timezone_validator.rb

@@ -5,7 +5,7 @@ class TimezoneValidator < ApplicationEachValidator
     TIMEZONE_RE = /\A-?\d\d:\d\d:00\z/.freeze
 
     def perform
-      error! :blank if value.to_s.blank?
+      error! :blank if str_value.blank?
       error! :timezone unless TIMEZONE_RE.match? value
     end
   end