Method: FormKeeper::Rule::Criteria::Field#initialize

Defined in:
lib/formkeeper.rb

#initialize(criteria) ⇒ Field

Returns a new instance of Field.



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# File 'lib/formkeeper.rb', line 516

def initialize(criteria)
  if criteria.has_key?(:default)
    default = criteria.delete :default
    @default = default.empty? ? nil : default
  else
    @default = nil
  end
  if criteria.has_key?(:filters)
    filters = criteria.delete :filters
    case filters
    when Array
      @filters = filters.collect(&:to_sym)
    when String
      @filters = [filters.to_sym]
    when Symbol
      @filters = [filters]
    else
      raise ArgumentError.new 'invalid :filters'
    end
  else
    @filters = []
  end

  if criteria.has_key?(:present)
    if not @default.nil?
      raise ArgumentError.new "don't set both :default and :present at once"
    end
    present = criteria.delete :present
    @present = !!present
  else
    @present = false
  end
  @constraints = criteria
end