Basic Validations
def validate
unless name && name =~ /^\w+$/
errors.add(:name, "is missing or valid")
end
end
def validate_on_create
if User.find_by_name(name)
errors.add(:name, "is already being used")
end
end
Validation Helpers
validates_acceptance_of attr... [ options... ]
Validates that the value of the attribute is the string "1" or the value of the
:accept parameter. Useful for checkboxes.
Options:
:accept value The value that signifies acceptance (defaults to 1)
:allow_nil boolean
:if code
:message text Default is "must be accepted"
:on :save, :create, or :update
validates_associated name... [ options... ]
(details go here)
validates_confirmation_of attr... [ options... ]
(details go here)
