active record validation
class Person < ApplicationRecord
validates :name, presence: true
end
irb> Person.create(name: "John Doe").valid?
=> true
irb> Person.create(name: nil).valid?
=> false
# List of validation helpers:
# acceptance
# validates_associated
# confirmation
# comparison
# exclusion
# format
# inclusion
# length
# numericality
# presence
# absence
# uniquenessactive record validates
class Person < ApplicationRecord
validates :name, presence: true
endCopyright © 2021 Codeinu
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