Class: ActiveModel::Validations::UniquenessValidator

Inherits:
EachValidator
  • Object
show all
Defined in:
lib/active_repository/uniqueness.rb

Overview

:nodoc:

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ UniquenessValidator

Returns a new instance of UniquenessValidator.



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# File 'lib/active_repository/uniqueness.rb', line 4

def initialize(options)
  super
  options.reverse_merge(:case_sensitive => true)
  options[:class].send :attr_accessor, :custom_attribute
end

Instance Method Details

#validate_each(record, attribute, value) ⇒ Object 



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# File 'lib/active_repository/uniqueness.rb', line 10

def validate_each(record, attribute, value)
  query  = (record.id ? "id <> #{record.id}" : 'id is not null')
  
  if(options[:scope])
    value = record.send(options[:scope])

    query += " and #{options[:scope]} = "
    query += value.is_a?(String) ? "'#{value}'" : value.to_s
  end


  duplicate = record.class.where(query).all.select do |object|
    object.id != record.id && object.send(attribute) == record.send(attribute)
  end

  record.errors.add(attribute, :taken, options.except(:case_sensitive, :scope, :conditions).merge(:value => value)) if duplicate.any?
end