ActiveRecord::Validations::ClassMethods

# File activerecord/lib/active_record/validations/absence.rb, line 20 def validates_absence_of(*attr_names) validates_with AbsenceValidator, _merge_attributes(attr_names) end Validates whether the associated object or objects are all valid. Works with any kind of association. class Book < ActiveRecord::Base has_many :pages belongs_to :library validates_associated :pages, :library end WARNING: This

[iox]

Using this validation method in conjunction with ActiveRecord::Validations#save does not guarantee the absence of duplicate record insertions

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validates_acceptance_of, :accept => true, typecast String:'1' => Boolean:true

[mthrfckr]

ActiveRecordのバリデーション

[a2ikm]

ActiveRecordのvalidation、オプションが載ってる