applies new string literal convention in activemodel/lib

The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.

activemodel/lib/active_model.rb

@@ -21,24 +21,24 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #++
 
-require 'active_support'
-require 'active_support/rails'
-require 'active_model/version'
+require "active_support"
+require "active_support/rails"
+require "active_model/version"
 
 module ActiveModel
   extend ActiveSupport::Autoload
 
   autoload :AttributeAssignment
   autoload :AttributeMethods
-  autoload :BlockValidator, 'active_model/validator'
+  autoload :BlockValidator, "active_model/validator"
   autoload :Callbacks
   autoload :Conversion
   autoload :Dirty
-  autoload :EachValidator, 'active_model/validator'
+  autoload :EachValidator, "active_model/validator"
   autoload :ForbiddenAttributesProtection
   autoload :Lint
   autoload :Model
-  autoload :Name, 'active_model/naming'
+  autoload :Name, "active_model/naming"
   autoload :Naming
   autoload :SecurePassword
   autoload :Serialization
@@ -49,9 +49,9 @@ module ActiveModel
 
   eager_autoload do
     autoload :Errors
-    autoload :RangeError, 'active_model/errors'
-    autoload :StrictValidationFailed, 'active_model/errors'
-    autoload :UnknownAttributeError, 'active_model/errors'
+    autoload :RangeError, "active_model/errors"
+    autoload :StrictValidationFailed, "active_model/errors"
+    autoload :UnknownAttributeError, "active_model/errors"
   end
 
   module Serializers
@@ -69,5 +69,5 @@ module ActiveModel
 end
 
 ActiveSupport.on_load(:i18n) do
-  I18n.load_path << File.dirname(__FILE__) + '/active_model/locale/en.yml'
+  I18n.load_path << File.dirname(__FILE__) + "/active_model/locale/en.yml"
 end

activemodel/lib/active_model/attribute_assignment.rb

@@ -1,4 +1,4 @@
-require 'active_support/core_ext/hash/keys'
+require "active_support/core_ext/hash/keys"
 
 module ActiveModel
   module AttributeAssignment

activemodel/lib/active_model/attribute_methods.rb

@@ -1,6 +1,6 @@
-require 'concurrent/map'
-require 'mutex_m'
-require 'active_support/core_ext/regexp'
+require "concurrent/map"
+require "mutex_m"
+require "active_support/core_ext/regexp"
 
 module ActiveModel
   # Raised when an attribute is not defined.
@@ -394,7 +394,7 @@ module ActiveModel
           AttributeMethodMatch = Struct.new(:target, :attr_name, :method_name)
 
           def initialize(options = {})
-            @prefix, @suffix = options.fetch(:prefix, ''), options.fetch(:suffix, '')
+            @prefix, @suffix = options.fetch(:prefix, ""), options.fetch(:suffix, "")
             @regex = /^(?:#{Regexp.escape(@prefix)})(.*)(?:#{Regexp.escape(@suffix)})$/
             @method_missing_target = "#{@prefix}attribute#{@suffix}"
             @method_name = "#{prefix}%s#{suffix}"

activemodel/lib/active_model/callbacks.rb

@@ -1,4 +1,4 @@
-require 'active_support/core_ext/array/extract_options'
+require "active_support/core_ext/array/extract_options"
 
 module ActiveModel
   # == Active \Model \Callbacks

activemodel/lib/active_model/conversion.rb

@@ -69,7 +69,7 @@ module ActiveModel
     #   person = Person.create(id: 1)
     #   person.to_param # => "1"
     def to_param
-      (persisted? && key = to_key) ? key.join('-') : nil
+      (persisted? && key = to_key) ? key.join("-") : nil
     end
 
     # Returns a +string+ identifying the path associated with the object.

activemodel/lib/active_model/dirty.rb

@@ -1,5 +1,5 @@
-require 'active_support/hash_with_indifferent_access'
-require 'active_support/core_ext/object/duplicable'
+require "active_support/hash_with_indifferent_access"
+require "active_support/core_ext/object/duplicable"
 
 module ActiveModel
   # == Active \Model \Dirty
@@ -123,9 +123,9 @@ module ActiveModel
     private_constant :OPTION_NOT_GIVEN
 
     included do
-      attribute_method_suffix '_changed?', '_change', '_will_change!', '_was'
-      attribute_method_suffix '_previously_changed?', '_previous_change'
-      attribute_method_affix prefix: 'restore_', suffix: '!'
+      attribute_method_suffix "_changed?", "_change", "_will_change!", "_was"
+      attribute_method_suffix "_previously_changed?", "_previous_change"
+      attribute_method_affix prefix: "restore_", suffix: "!"
     end
 
     # Returns +true+ if any of the attributes have unsaved changes, +false+ otherwise.

activemodel/lib/active_model/errors.rb

@@ -1,7 +1,7 @@
-require 'active_support/core_ext/array/conversions'
-require 'active_support/core_ext/string/inflections'
-require 'active_support/core_ext/object/deep_dup'
-require 'active_support/core_ext/string/filters'
+require "active_support/core_ext/array/conversions"
+require "active_support/core_ext/string/inflections"
+require "active_support/core_ext/object/deep_dup"
+require "active_support/core_ext/string/filters"
 
 module ActiveModel
   # == Active \Model \Errors
@@ -437,7 +437,7 @@ module ActiveModel
     #   person.errors.full_message(:name, 'is invalid') # => "Name is invalid"
     def full_message(attribute, message)
       return message if attribute == :base
-      attr_name = attribute.to_s.tr('.', '_').humanize
+      attr_name = attribute.to_s.tr(".", "_").humanize
       attr_name = @base.class.human_attribute_name(attribute, default: attr_name)
       I18n.t(:"errors.format", {
         default:  "%{attribute} %{message}",

activemodel/lib/active_model/naming.rb

@@ -1,7 +1,7 @@
-require 'active_support/core_ext/hash/except'
-require 'active_support/core_ext/module/introspection'
-require 'active_support/core_ext/module/remove_method'
-require 'active_support/core_ext/module/delegation'
+require "active_support/core_ext/hash/except"
+require "active_support/core_ext/module/introspection"
+require "active_support/core_ext/module/remove_method"
+require "active_support/core_ext/module/delegation"
 
 module ActiveModel
   class Name
@@ -149,7 +149,7 @@ module ActiveModel
 
       raise ArgumentError, "Class name cannot be blank. You need to supply a name argument when anonymous class given" if @name.blank?
 
-      @unnamespaced = @name.sub(/^#{namespace.name}::/, '') if namespace
+      @unnamespaced = @name.sub(/^#{namespace.name}::/, "") if namespace
       @klass        = klass
       @singular     = _singularize(@name)
       @plural       = ActiveSupport::Inflector.pluralize(@singular)
@@ -192,7 +192,7 @@ module ActiveModel
     private
 
     def _singularize(string)
-      ActiveSupport::Inflector.underscore(string).tr('/'.freeze, '_'.freeze)
+      ActiveSupport::Inflector.underscore(string).tr("/".freeze, "_".freeze)
     end
   end
 

activemodel/lib/active_model/secure_password.rb

@@ -55,7 +55,7 @@ module ActiveModel
         # This is to avoid ActiveModel (and by extension the entire framework)
         # being dependent on a binary library.
         begin
-          require 'bcrypt'
+          require "bcrypt"
         rescue LoadError
           $stderr.puts "You don't have bcrypt installed in your application. Please add it to your Gemfile and run bundle install"
           raise

activemodel/lib/active_model/serialization.rb

@@ -1,5 +1,5 @@
-require 'active_support/core_ext/hash/except'
-require 'active_support/core_ext/hash/slice'
+require "active_support/core_ext/hash/except"
+require "active_support/core_ext/hash/slice"
 
 module ActiveModel
   # == Active \Model \Serialization

activemodel/lib/active_model/serializers/json.rb

@@ -1,4 +1,4 @@
-require 'active_support/json'
+require "active_support/json"
 
 module ActiveModel
   module Serializers

activemodel/lib/active_model/type.rb

@@ -1,22 +1,22 @@
-require 'active_model/type/helpers'
-require 'active_model/type/value'
+require "active_model/type/helpers"
+require "active_model/type/value"
 
-require 'active_model/type/big_integer'
-require 'active_model/type/binary'
-require 'active_model/type/boolean'
-require 'active_model/type/date'
-require 'active_model/type/date_time'
-require 'active_model/type/decimal'
-require 'active_model/type/decimal_without_scale'
-require 'active_model/type/float'
-require 'active_model/type/immutable_string'
-require 'active_model/type/integer'
-require 'active_model/type/string'
-require 'active_model/type/text'
-require 'active_model/type/time'
-require 'active_model/type/unsigned_integer'
+require "active_model/type/big_integer"
+require "active_model/type/binary"
+require "active_model/type/boolean"
+require "active_model/type/date"
+require "active_model/type/date_time"
+require "active_model/type/decimal"
+require "active_model/type/decimal_without_scale"
+require "active_model/type/float"
+require "active_model/type/immutable_string"
+require "active_model/type/integer"
+require "active_model/type/string"
+require "active_model/type/text"
+require "active_model/type/time"
+require "active_model/type/unsigned_integer"
 
-require 'active_model/type/registry'
+require "active_model/type/registry"
 
 module ActiveModel
   module Type

activemodel/lib/active_model/type/big_integer.rb

@@ -1,4 +1,4 @@
-require 'active_model/type/integer'
+require "active_model/type/integer"
 
 module ActiveModel
   module Type

activemodel/lib/active_model/type/binary.rb

@@ -38,7 +38,7 @@ module ActiveModel
         alias_method :to_str, :to_s
 
         def hex
-          @value.unpack('H*')[0]
+          @value.unpack("H*")[0]
         end
 
         def ==(other)

activemodel/lib/active_model/type/boolean.rb

@@ -12,7 +12,7 @@ module ActiveModel
     # - Empty strings are coerced to +nil+
     # - All other values will be coerced to +true+
     class Boolean < Value
-      FALSE_VALUES = [false, 0, '0', 'f', 'F', 'false', 'FALSE', 'off', 'OFF'].to_set
+      FALSE_VALUES = [false, 0, "0", "f", "F", "false", "FALSE", "off", "OFF"].to_set
 
       def type # :nodoc:
         :boolean
@@ -21,7 +21,7 @@ module ActiveModel
       private
 
       def cast_value(value)
-        if value == ''
+        if value == ""
           nil
         else
           !FALSE_VALUES.include?(value)

activemodel/lib/active_model/type/decimal_without_scale.rb

@@ -1,4 +1,4 @@
-require 'active_model/type/big_integer'
+require "active_model/type/big_integer"
 
 module ActiveModel
   module Type

activemodel/lib/active_model/type/helpers.rb

@@ -1,4 +1,4 @@
-require 'active_model/type/helpers/accepts_multiparameter_time'
-require 'active_model/type/helpers/numeric'
-require 'active_model/type/helpers/mutable'
-require 'active_model/type/helpers/time_value'
+require "active_model/type/helpers/accepts_multiparameter_time"
+require "active_model/type/helpers/numeric"
+require "active_model/type/helpers/mutable"
+require "active_model/type/helpers/time_value"

activemodel/lib/active_model/type/helpers/time_value.rb

@@ -19,7 +19,7 @@ module ActiveModel
         end
 
         def is_utc?
-          ::Time.zone_default.nil? || ::Time.zone_default =~ 'UTC'
+          ::Time.zone_default.nil? || ::Time.zone_default =~ "UTC"
         end
 
         def default_timezone

activemodel/lib/active_model/type/text.rb

@@ -1,4 +1,4 @@
-require 'active_model/type/string'
+require "active_model/type/string"
 
 module ActiveModel
   module Type

activemodel/lib/active_model/type/time.rb

@@ -29,7 +29,7 @@ module ActiveModel
         return value unless value.is_a?(::String)
         return if value.empty?
 
-        if value.start_with?('2000-01-01')
+        if value.start_with?("2000-01-01")
           dummy_time_value = value
         else
           dummy_time_value = "2000-01-01 #{value}"

activemodel/lib/active_model/validations.rb

@@ -1,6 +1,6 @@
-require 'active_support/core_ext/array/extract_options'
-require 'active_support/core_ext/hash/keys'
-require 'active_support/core_ext/hash/except'
+require "active_support/core_ext/array/extract_options"
+require "active_support/core_ext/hash/keys"
+require "active_support/core_ext/hash/except"
 
 module ActiveModel
 

activemodel/lib/active_model/validations/acceptance.rb

@@ -64,7 +64,7 @@ module ActiveModel
         private
 
         def convert_to_reader_name(method_name)
-          method_name.to_s.chomp('=')
+          method_name.to_s.chomp("=")
         end
       end
     end

activemodel/lib/active_model/validations/clusivity.rb

@@ -1,4 +1,4 @@
-require 'active_support/core_ext/range'
+require "active_support/core_ext/range"
 
 module ActiveModel
   module Validations

activemodel/lib/active_model/validations/format.rb

@@ -1,4 +1,4 @@
-require 'active_support/core_ext/regexp'
+require "active_support/core_ext/regexp"
 
 module ActiveModel
   module Validations

activemodel/lib/active_model/validations/length.rb

@@ -46,7 +46,7 @@ module ActiveModel
         keys = CHECKS.keys & options.keys
 
         if keys.empty?
-          raise ArgumentError, 'Range unspecified. Specify the :in, :within, :maximum, :minimum, or :is option.'
+          raise ArgumentError, "Range unspecified. Specify the :in, :within, :maximum, :minimum, or :is option."
         end
 
         keys.each do |key|

activemodel/lib/active_model/validations/validates.rb

@@ -1,4 +1,4 @@
-require 'active_support/core_ext/hash/slice'
+require "active_support/core_ext/hash/slice"
 
 module ActiveModel
   module Validations
@@ -115,7 +115,7 @@ module ActiveModel
           key = "#{key.to_s.camelize}Validator"
 
           begin
-            validator = key.include?('::'.freeze) ? key.constantize : const_get(key)
+            validator = key.include?("::".freeze) ? key.constantize : const_get(key)
           rescue NameError
             raise ArgumentError, "Unknown validator: '#{key}'"
           end

activemodel/lib/active_model/validator.rb

@@ -100,7 +100,7 @@ module ActiveModel
     #   PresenceValidator.kind   # => :presence
     #   UniquenessValidator.kind # => :uniqueness
     def self.kind
-      @kind ||= name.split('::').last.underscore.chomp('_validator').to_sym unless anonymous?
+      @kind ||= name.split("::").last.underscore.chomp("_validator").to_sym unless anonymous?
     end
 
     # Accepts options that will be made available through the +options+ reader.

activemodel/lib/active_model/version.rb

@@ -1,4 +1,4 @@
-require_relative 'gem_version'
+require_relative "gem_version"
 
 module ActiveModel
   # Returns the version of the currently loaded \Active \Model as a <tt>Gem::Version</tt>