lib/mobility/plugins/active_record/uniqueness_validation.rb
module Mobility
module Plugins
module ActiveRecord
module UniquenessValidation
extend Plugin
requires :query, include: false
included_hook do |klass|
klass.class_eval do
unless const_defined?(:UniquenessValidator, false)
self.const_set(:UniquenessValidator, Class.new(UniquenessValidator))
def self.validates_uniqueness_of(*attr_names)
validates_with(UniquenessValidator, _merge_attributes(attr_names))
end
end
end
end
class UniquenessValidator < ::ActiveRecord::Validations::UniquenessValidator
# @param [ActiveRecord::Base] record Translated model
# @param [String] attribute Name of attribute
# @param [Object] value Attribute value
def validate_each(record, attribute, value)
klass = record.class
if ([*options[:scope]] + [attribute]).any? { |name| klass.mobility_attribute?(name) }
return unless value.present?
relation = Plugins::ActiveRecord::Query.build_query(klass.unscoped, Mobility.locale) do |m|
node = m.__send__(attribute)
options[:case_sensitive] == false ? node.lower.eq(value.downcase) : node.eq(value)
end
relation = relation.where.not(klass.primary_key => record.id) if record.persisted?
relation = mobility_scope_relation(record, relation)
relation = relation.merge(options[:conditions]) if options[:conditions]
if relation.exists?
error_options = options.except(:case_sensitive, :scope, :conditions)
error_options[:value] = value
record.errors.add(attribute, :taken, **error_options)
end
else
super
end
end
private
def mobility_scope_relation(record, relation)
[*options[:scope]].inject(relation) do |scoped_relation, scope_item|
Plugins::ActiveRecord::Query.build_query(scoped_relation, Mobility.locale) do |m|
m.__send__(scope_item).eq(record.send(scope_item))
end
end
end
end
end
end
register_plugin(:active_record_uniqueness_validation, ActiveRecord::UniquenessValidation)
end
end