Contents

class ArrayField < Field
  # TODO: validate should defer to @element_type over each element
  def initialize(name, options={})
    @element_type = Field.from_options(name, 'type' => options['of'].to_s.singularize) if options['of']
    super
  end
  
  def json_action(action, value, record)
    array = record.get_raw(name)
    value = process(value, record, :from_json)
    value = [value] unless value.is_a?(Array)
    
    case action
    when 'set'
      array = value
    when 'add'
      array += value
    when 'add_unique'
      array |= value
    when 'remove'
      array -= value
    when 'clear'
      array = []
    end
    
    record.set_raw(name, array)
    record.changed!(name)
  end

  def typecast(value, record)
    value = [] unless value.is_a?(Array)
    ChangeSensitiveArray.new(record, name, process(value, record, :typecast))
  end
  
  def untypecast(value, record)
    return [] if value.blank?
    process(value.to_a, record, :untypecast)
  end
  
  def from_json(value, record)
    return [] if value.blank?
    if value.is_a?(String)
      if value.include?(',')
        value = value.split(',')
      else
        value = value.split(' ')
      end
    end
    process(value.to_a, record, :from_json)
  end
  
  
  private
    def process(values, record, method)
      return values if @element_type.nil?
      if values.is_a?(Array)
        values.collect {|element| @element_type.send(method, element, record)}
      else
        @element_type.send(method, values, record)
      end
    end
end

Field::TYPES['array'] = ArrayField

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
yodel-0.0.7	lib/yodel/models/core/fields/array_field.rb
yodel-0.0.4	lib/yodel/models/core/fields/array_field.rb
yodel-0.0.3	lib/yodel/models/core/fields/array_field.rb
yodel-0.0.2	lib/yodel/models/core/fields/array_field.rb
yodel-0.0.1	lib/yodel/models/core/fields/array_field.rb