Module: ActiveModel::AttributeFilters::Common::Split

Included in:
ActiveModel::AttributeFilters::Common
Defined in:
lib/attribute-filters/common_filters/split.rb

Overview

Splits attributes.

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Methods included from FilteringRegistration

#filtering_method

Instance Method Details

#split_attributes ⇒ Object

Splits attributes and writes the results into other attributes.

The attrubutes to be splitted are taken from the attribute set called should_be_splitted. This method is safe to be used with multibyte strings (containing diacritics).

The pattern used to split a string and the optional limit argument should be set using the model’s class method split_attribute or directly with annotations.



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# File 'lib/attribute-filters/common_filters/split.rb', line 27

def split_attributes
  for_each_attr_from_set(:should_be_splitted) do |atr_val, atr_name, set_obj|
    pattern, limit, flatten, into = set_obj.annotation(atr_name,  :split_pattern, :split_limit,
                                                                  :split_flatten, :split_into)
    if limit.nil?
      r = AFHelpers.each_element(atr_val, String) do |v|
        v.mb_chars.split(pattern)
      end
    else
      r = AFHelpers.each_element(atr_val, String) do |v|
        v.mb_chars.split(pattern, limit)
      end
    end
    r = [ r ] unless r.is_a?(Array)
    r.flatten! if flatten

    # writing collected slices
    if into.blank?
      public_send("#{atr_name}=", r)
    else
      into.each_with_index { |dst_atr, i| public_send("#{dst_atr}=", r[i]) }
    end
  end
end