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ActiveRecord::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={}) click to toggle source

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

    # File lib/active_record/validations.rb, line 49
49:     def save(options={})
50:       perform_validations(options) ? super : false
51:     end
save!(options={}) click to toggle source

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

    # File lib/active_record/validations.rb, line 55
55:     def save!(options={})
56:       perform_validations(options) ? super : raise(RecordInvalid.new(self))
57:     end
valid?(context = nil) click to toggle source

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

    # File lib/active_record/validations.rb, line 67
67:     def valid?(context = nil)
68:       context ||= (new_record? ? :create : :update)
69:       output = super(context)
70:       errors.empty? && output
71:     end

Protected Instance Methods

perform_validations(options={}) click to toggle source
    # File lib/active_record/validations.rb, line 75
75:     def perform_validations(options={})
76:       perform_validation = options[:validate] != false
77:       perform_validation ? valid?(options[:context]) : true
78:     end

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