diff options
Diffstat (limited to 'activemodel/lib/active_model/validations.rb')
-rw-r--r-- | activemodel/lib/active_model/validations.rb | 56 |
1 files changed, 23 insertions, 33 deletions
diff --git a/activemodel/lib/active_model/validations.rb b/activemodel/lib/active_model/validations.rb index a0d64507f9..d5460a58bd 100644 --- a/activemodel/lib/active_model/validations.rb +++ b/activemodel/lib/active_model/validations.rb @@ -13,6 +13,29 @@ module ActiveModel end module ClassMethods + # Validates each attribute against a block. + # + # class Person < ActiveRecord::Base + # validates_each :first_name, :last_name do |record, attr, value| + # record.errors.add attr, 'starts with z.' if value[0] == ?z + # end + # end + # + # Options: + # * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>). + # * <tt>:allow_nil</tt> - Skip validation if attribute is +nil+. + # * <tt>:allow_blank</tt> - Skip validation if attribute is blank. + # * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should + # occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The + # method, proc or string should return or evaluate to a true or false value. + # * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should + # not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The + # method, proc or string should return or evaluate to a true or false value. + def validates_each(*attr_names, &block) + options = attr_names.extract_options!.symbolize_keys + validates_with BlockValidator, options.merge(:attributes => attr_names.flatten), &block + end + # Adds a validation method or block to the class. This is useful when # overriding the +validate+ instance method becomes too unwieldly and # you're looking for more descriptive declaration of your validations. @@ -40,39 +63,6 @@ module ActiveModel # end # # This usage applies to +validate_on_create+ and +validate_on_update as well+. - - # Validates each attribute against a block. - # - # class Person < ActiveRecord::Base - # validates_each :first_name, :last_name do |record, attr, value| - # record.errors.add attr, 'starts with z.' if value[0] == ?z - # end - # end - # - # Options: - # * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>). - # * <tt>:allow_nil</tt> - Skip validation if attribute is +nil+. - # * <tt>:allow_blank</tt> - Skip validation if attribute is blank. - # * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should - # occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The - # method, proc or string should return or evaluate to a true or false value. - # * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should - # not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The - # method, proc or string should return or evaluate to a true or false value. - def validates_each(*attrs) - options = attrs.extract_options!.symbolize_keys - attrs = attrs.flatten - - # Declare the validation. - validate options do |record| - attrs.each do |attr| - value = record.send(:read_attribute_for_validation, attr) - next if (value.nil? && options[:allow_nil]) || (value.blank? && options[:allow_blank]) - yield record, attr, value - end - end - end - def validate(*args, &block) options = args.last if options.is_a?(Hash) && options.key?(:on) |