diff options
Diffstat (limited to 'activemodel/lib/active_model/validations/inclusion.rb')
| -rw-r--r-- | activemodel/lib/active_model/validations/inclusion.rb | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/activemodel/lib/active_model/validations/inclusion.rb b/activemodel/lib/active_model/validations/inclusion.rb index 92ac940f36..cb46547e92 100644 --- a/activemodel/lib/active_model/validations/inclusion.rb +++ b/activemodel/lib/active_model/validations/inclusion.rb @@ -5,20 +5,31 @@ module ActiveModel # == Active Model Inclusion Validator module Validations class InclusionValidator < EachValidator + ERROR_MESSAGE = "An object with the method #include? or a proc or lambda is required, " << + "and must be supplied as the :in option of the configuration hash" + def check_validity! - raise ArgumentError, "An object with the method include? is required must be supplied as the " << - ":in option of the configuration hash" unless options[:in].respond_to?(:include?) + unless [:include?, :call].any?{ |method| options[:in].respond_to?(method) } + raise ArgumentError, ERROR_MESSAGE + end end def validate_each(record, attribute, value) - record.errors.add(attribute, :inclusion, options.except(:in).merge!(:value => value)) unless options[:in].send(include?, value) + exclusions = options[:in].respond_to?(:call) ? options[:in].call(record) : options[:in] + unless exclusions.send(inclusion_method(exclusions), value) + record.errors.add(attribute, :inclusion, options.except(:in).merge!(:value => value)) + end + rescue NoMethodError + raise ArgumentError, "Exclusion validation for :#{attribute} in #{record.class.name}: #{ERROR_MESSAGE}" end + private + # In Ruby 1.9 <tt>Range#include?</tt> on non-numeric ranges checks all possible values in the # range for equality, so it may be slow for large ranges. The new <tt>Range#cover?</tt> # uses the previous logic of comparing a value with the range endpoints. - def include? - options[:in].is_a?(Range) ? :cover? : :include? + def inclusion_method(enumerable) + enumerable.is_a?(Range) ? :cover? : :include? end end @@ -29,11 +40,13 @@ module ActiveModel # validates_inclusion_of :gender, :in => %w( m f ) # validates_inclusion_of :age, :in => 0..99 # validates_inclusion_of :format, :in => %w( jpg gif png ), :message => "extension %{value} is not included in the list" + # validates_inclusion_of :states, :in => lambda{ |person| STATES[person.country] } # end # # Configuration options: - # * <tt>:in</tt> - An enumerable object of available items. - # If the enumerable is a range the test is performed with <tt>Range#cover?</tt> + # * <tt>:in</tt> - An enumerable object of available items. This can be + # supplied as a proc or lambda which returns an enumerable. If the enumerable + # is a range the test is performed with <tt>Range#cover?</tt> # (backported in Active Support for 1.8), otherwise with <tt>include?</tt>. # * <tt>:message</tt> - Specifies a custom error message (default is: "is not included in the list"). # * <tt>:allow_nil</tt> - If set to true, skips this validation if the attribute is +nil+ (default is +false+). |