Add validations

app/models/account.rb

@@ -39,13 +39,11 @@ class Account < ApplicationRecord
 
   validates :public_name, allow_nil: true, length: { in: 1..255 }
 
-  validates :biography,
-            allow_nil: true,
-            good_big_text: true
+  validates :biography, allow_nil: true, good_big_text: true
 
   validates :avatar, allow_nil: true, image: true
 
-  validates :timezone, presence: true, timezone: true
+  validates :timezone, timezone: true
 
   validate :contact_list_corresponds_person
   validate :person_corresponds_contact_list

app/models/federal_subject.rb

@@ -42,7 +42,7 @@ class FederalSubject < ApplicationRecord
             uniqueness: true,
             numericality: { only_integer: true, greater_than: 0 }
 
-  validates :timezone, presence: true, timezone: true
+  validates :timezone, timezone: true
 
   validate :english_name_looks_realistic
   validate :native_name_looks_realistic

app/models/session.rb

@@ -22,9 +22,7 @@ class Session < ApplicationRecord
 
   validates :ip_address, presence: true
 
-  validates :user_agent,
-            allow_nil: true,
-            good_big_text: true
+  validates :user_agent, allow_nil: true, good_big_text: true
 
 private
 

app/validators/codename_validator.rb

@@ -8,6 +8,7 @@ class CodenameValidator < ApplicationEachValidator
     MAX = 36
 
     def perform
+      error! :blank if value.to_s.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

app/validators/good_text_validator.rb

@@ -5,6 +5,7 @@ class GoodTextValidator < ApplicationEachValidator
     GOOD_TEXT_RE = /\A[^\s](.*[^\s])?\z/.freeze
 
     def perform
+      error! :blank if value.to_s.blank?
       error! :good_text unless GOOD_TEXT_RE.match? value
     end
   end

app/validators/timezone_validator.rb

@@ -5,6 +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! :timezone unless TIMEZONE_RE.match? value
     end
   end