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module ActiveRecord::Validations

Included modules:: ActiveModel::Validations

Active Record Validations

Active Record includes the majority of its validations from ActiveModel::Validations all of which accept the :on argument to define the context where the validations are active. Active Record will always supply either the context of :create or :update dependent on whether the model is a new_record?.

Public Instance Methods

save(options={}) Show source

The validation process on save can be skipped by passing validate: false. The regular ActiveRecord::Base#save method is replaced with this when the validations module is mixed in, which it is by default.

Calls superclass method

# File activerecord/lib/active_record/validations.rb, line 43
def save(options={})
  perform_validations(options) ? super : false
end

save!(options={}) Show source

Attempts to save the record just like ActiveRecord::Base#save but will raise an ActiveRecord::RecordInvalid exception instead of returning false if the record is not valid.

Calls superclass method

# File activerecord/lib/active_record/validations.rb, line 49
def save!(options={})
  perform_validations(options) ? super : raise_validation_error
end

valid?(context = nil) Show source

Runs all the validations within the specified context. Returns true if no errors are found, false otherwise.

Aliased as validate.

If the argument is false (default is nil), the context is set to :create if new_record? is true, and to :update if it is not.

Validations with no :on option will run no matter the context. Validations with some :on option will only run in the specified context.

Calls superclass method ActiveModel::Validations#valid?

# File activerecord/lib/active_record/validations.rb, line 63
def valid?(context = nil)
  context ||= default_validation_context
  output = super(context)
  errors.empty? && output
end

Also aliased as: validate

validate(context = nil)

Alias for: valid?

Protected Instance Methods

default_validation_context() Show source

# File activerecord/lib/active_record/validations.rb, line 73
def default_validation_context
  new_record? ? :create : :update
end

raise_validation_error() Show source

# File activerecord/lib/active_record/validations.rb, line 77
def raise_validation_error
  raise(RecordInvalid.new(self))
end