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?.

Namespace
Methods
R
S
V
Included Modules
Instance Public methods
save(options={})

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

Source: show | on GitHub 

# File activerecord/lib/active_record/validations.rb, line 36
def save(options={})
  perform_validations(options) ? super : false
end
save!(options={})

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

Source: show | on GitHub 

# File activerecord/lib/active_record/validations.rb, line 42
def save!(options={})
  perform_validations(options) ? super : raise_record_invalid
end
valid?(context = nil)

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.

Also aliased as: validate

Source: show | on GitHub 

# File activerecord/lib/active_record/validations.rb, line 56
def valid?(context = nil)
  context ||= (new_record? ? :create : :update)
  output = super(context)
  errors.empty? && output
end
validate(context = nil)
Alias for: valid?
validate!(context = nil)

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

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.

Source: show | on GitHub 

# File activerecord/lib/active_record/validations.rb, line 72
def validate!(context = nil)
  valid?(context) || raise_record_invalid
end
Instance Protected methods
raise_record_invalid()

Source: show | on GitHub 

# File activerecord/lib/active_record/validations.rb, line 78
def raise_record_invalid
  raise(RecordInvalid.new(self))
end