Removed deprecated :tokenizer in the length validator

Author: rafaelfranca

activemodel/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Removed deprecated `:tokenizer` in the length validator.
+
+    *Rafael Mendonça França*
+
 *   Removed deprecated methods in `ActiveModel::Errors`.
 
     `#get`, `#set`, `[]=`, `add_on_empty` and `add_on_blank`.

activemodel/lib/active_model/validations/length.rb

@@ -6,7 +6,7 @@ class LengthValidator < EachValidator # :nodoc:
       MESSAGES  = { is: :wrong_length, minimum: :too_short, maximum: :too_long }.freeze
       CHECKS    = { is: :==, minimum: :>=, maximum: :<= }.freeze
 
-      RESERVED_OPTIONS  = [:minimum, :maximum, :within, :is, :tokenizer, :too_short, :too_long]
+      RESERVED_OPTIONS  = [:minimum, :maximum, :within, :is, :too_short, :too_long]
 
       def initialize(options)
         if range = (options.delete(:in) || options.delete(:within))
@@ -18,27 +18,6 @@ def initialize(options)
           options[:minimum] = 1
         end
 
-        if options[:tokenizer]
-          ActiveSupport::Deprecation.warn(<<-EOS.strip_heredoc)
-            The `:tokenizer` option is deprecated, and will be removed in Rails 5.1.
-            You can achieve the same functionality by defining an instance method
-            with the value that you want to validate the length of. For example,
-
-                validates_length_of :essay, minimum: 100,
-                  tokenizer: ->(str) { str.scan(/\w+/) }
-
-            should be written as
-
-                validates_length_of :words_in_essay, minimum: 100
-
-                private
-
-                def words_in_essay
-                  essay.scan(/\w+/)
-                end
-          EOS
-        end
-
         super
       end
 
@@ -59,7 +38,6 @@ def check_validity!
       end
 
       def validate_each(record, attribute, value)
-        value = tokenize(record, value)
         value_length = value.respond_to?(:length) ? value.length : value.to_s.length
         errors_options = options.except(*RESERVED_OPTIONS)
 
@@ -80,17 +58,6 @@ def validate_each(record, attribute, value)
       end
 
       private
-        def tokenize(record, value)
-          tokenizer = options[:tokenizer]
-          if tokenizer && value.kind_of?(String)
-            if tokenizer.kind_of?(Proc)
-              tokenizer.call(value)
-            elsif record.respond_to?(tokenizer)
-              record.send(tokenizer, value)
-            end
-          end || value
-        end
-
         def skip_nil_check?(key)
           key == :maximum && options[:allow_nil].nil? && options[:allow_blank].nil?
         end

activemodel/test/cases/validations/length_validation_test.rb

@@ -318,42 +318,6 @@ def test_validates_length_of_using_is_utf8
     assert_equal ["is the wrong length (should be 5 characters)"], t.errors["title"]
   end
 
-  def test_validates_length_of_with_block
-    assert_deprecated do
-      Topic.validates_length_of(
-        :content,
-        minimum: 5,
-        too_short: "Your essay must be at least %{count} words.",
-        tokenizer: lambda { |str| str.scan(/\w+/) },
-      )
-    end
-    t = Topic.new(content: "this content should be long enough")
-    assert t.valid?
-
-    t.content = "not long enough"
-    assert t.invalid?
-    assert t.errors[:content].any?
-    assert_equal ["Your essay must be at least 5 words."], t.errors[:content]
-  end
-
-  def test_validates_length_of_with_symbol
-    assert_deprecated do
-      Topic.validates_length_of(
-        :content,
-        minimum: 5,
-        too_short: "Your essay must be at least %{count} words.",
-        tokenizer: :my_word_tokenizer,
-      )
-    end
-    t = Topic.new(content: "this content should be long enough")
-    assert t.valid?
-
-    t.content = "not long enough"
-    assert t.invalid?
-    assert t.errors[:content].any?
-    assert_equal ["Your essay must be at least 5 words."], t.errors[:content]
-  end
-
   def test_validates_length_of_for_integer
     Topic.validates_length_of(:approved, is: 4)
 

activemodel/test/models/topic.rb

@@ -36,8 +36,4 @@ def my_validation
   def my_validation_with_arg(attr)
     errors.add attr, "is missing" unless send(attr)
   end
-
-  def my_word_tokenizer(str)
-    str.scan(/\w+/)
-  end
 end