module ActiveRecord::Validations::ClassMethods

See ActiveModel::Validations::HelperMethods.validates_numericality_of for more information.

value or 15.
+true+). +Kernel.Float+ precision defaults to the column's precision
expression /\A[\+\-]?\d+\z/ (if only_integer is set to
only_integer is +false+) or applying it to the regular
trying to convert it to a float with +Kernel.Float+ (if
Validates whether the value of the specified attribute is numeric by

def validates_numericality_of(*attr_names)
  validates_with NumericalityValidator, _merge_attributes(attr_names)
end