Module: Mongoid::MultiParameterAttributes

Defined in:
lib/mongoid/multi_parameter_attributes.rb

Overview

@todo: Durran: This module needs an overhaul.

Defined Under Namespace

Modules: Errors

Instance Method Summary collapse

Instance Method Details

#process(attrs = nil, guard_protected_attributes = true) ⇒ Object 



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# File 'lib/mongoid/multi_parameter_attributes.rb', line 30

def process(attrs = nil, guard_protected_attributes = true)
  if attrs
    errors = []
    attributes = {}
    multi_parameter_attributes = {}

    attrs.each_pair do |key, value|
      if key =~ /^([^\(]+)\((\d+)([if])\)$/
        key, index = $1, $2.to_i
        (multi_parameter_attributes[key] ||= {})[index] = value.empty? ? nil : value.send("to_#{$3}")
      else
        attributes[key] = value
      end
    end

    multi_parameter_attributes.each_pair do |key, values|
      begin
        values = (values.keys.min..values.keys.max).map { |i| values[i] }
        klass = self.class.fields[key].try(:type)
        attributes[key] = instantiate_object(klass, values)
      rescue => e
        errors << Errors::AttributeAssignmentError.new("error on assignment #{values.inspect} to #{key}", e, key)
      end
    end

    unless errors.empty?
      raise Errors::MultiparameterAssignmentErrors.new(errors), "#{errors.size} error(s) on assignment of multiparameter attributes"
    end

    super attributes, guard_protected_attributes
  else
    super
  end
end