Module: CMDx::Validators::Length

Extended by:
Length
Included in:
Length
Defined in:
lib/cmdx/validators/length.rb

Overview

Validates the #length of value against one of: :within / :not_within / :in / :not_in (Range), :min + :max, :gt / :lt (strict comparison), or :is / :is_not (exact match). :gte, :lte, :eq, :not_eq are accepted as aliases of :min, :max, :is, :is_not respectively (with matching _message overrides). Values without #length fail with the :nil_message override or a default.

Instance Method Summary collapse

Instance Method Details

#call(value, options = EMPTY_HASH) ⇒ Validators::Failure?

Parameters:

  • value (#length, nil)
  • options (Hash{Symbol => Object}) (defaults to: EMPTY_HASH) —

    see module summary

Options Hash (options):

  • :message (String) —

    global failure-message override

  • :nil_message (String) —

    override when value lacks #length

  • :within_message, (String) —

    :in_message, :not_within_message, :not_in_message, :min_message, :max_message, :gt_message, :lt_message, :is_message, :is_not_message

Returns:

Raises:

  • (ArgumentError) —

    when no recognized length option is given



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# File 'lib/cmdx/validators/length.rb', line 37

def call(value, options = EMPTY_HASH)
  return nil_failure(options) unless value.respond_to?(:length)

  length = value.length

  case options = options.transform_keys(ALIASES)
  in within:
    within_failure(within.begin, within.end, options) unless within.cover?(length)
  in not_within:
    not_within_failure(not_within.begin, not_within.end, options) if not_within.cover?(length)
  in in: xin
    within_failure(xin.begin, xin.end, options) unless xin.cover?(length)
  in not_in:
    not_within_failure(not_in.begin, not_in.end, options) if not_in.cover?(length)
  in min:, max:
    within_failure(min, max, options) unless length.between?(min, max)
  in min:
    min_failure(min, options) unless min <= length
  in max:
    max_failure(max, options) unless length <= max
  in gt:
    gt_failure(gt, options) unless gt < length
  in lt:
    lt_failure(lt, options) unless length < lt
  in is:
    is_failure(is, options) unless length == is
  in is_not:
    is_not_failure(is_not, options) if length == is_not
  else
    raise ArgumentError, "unknown length validator options given"
  end
end