Class: ActiveModel::Validations::ArrayValidator

Inherits:
EachValidator
  • Object
show all
Defined in:
lib/active_model/validations/array_validator.rb

Overview

Based on gist.github.com/ssimeonov/6519423

Validates the values of an Array with other validators. Generates error messages that include the index and value of invalid elements.

Example:

validates :values, array: { presence: true, inclusion: { in: %w{ big small } } }

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#attribute ⇒ Object (readonly)

Returns the value of attribute attribute.



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# File 'lib/active_model/validations/array_validator.rb', line 16

def attribute
  @attribute
end

#proxy_attribute ⇒ Object (readonly)

Returns the value of attribute proxy_attribute.



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# File 'lib/active_model/validations/array_validator.rb', line 16

def proxy_attribute
  @proxy_attribute
end

#record ⇒ Object (readonly)

Returns the value of attribute record.



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# File 'lib/active_model/validations/array_validator.rb', line 16

def record
  @record
end

Instance Method Details

#validate_each(record, attribute, values) ⇒ Object 



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# File 'lib/active_model/validations/array_validator.rb', line 18

def validate_each(record, attribute, values)
  @record = record
  @attribute = attribute

  # Cache any existing errors temporarily.
  @existing_errors = record.errors.delete(attribute) || []

  # Run validations
  validate_each_internal values

  # Restore any existing errors.
  return if @existing_errors.blank?

  @existing_errors.each { |e| record.errors.add attribute, e }
end