Module: StripAttributes

Defined in:
lib/strip_attributes/version.rb,
lib/strip_attributes/matchers.rb,
lib/strip_attributes/shoulda/macros.rb,
lib/strip_attributes.rb

Defined Under Namespace

Modules: Matchers, Shoulda

Constant Summary collapse

VERSION = 
"1.5.1"
VALID_OPTIONS = 
[:only, :except, :allow_empty, :collapse_spaces, :regex]
MULTIBYTE_SUPPORTED = 
"\u0020" == " "

Class Method Summary collapse

Class Method Details

.narrow(attributes, options = {}) ⇒ Object

Necessary because Rails has removed the narrowing of attributes using :only and :except on Base#attributes



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# File 'lib/strip_attributes.rb', line 27

def self.narrow(attributes, options = {})
  if except = options && options[:except]
    except = Array(except).collect { |attribute| attribute.to_s }
    attributes.except(*except)
  elsif only = options && options[:only]
    only = Array(only).collect { |attribute| attribute.to_s }
    attributes.slice(*only)
  else
    attributes
  end
end

.strip(record, options) ⇒ Object 



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# File 'lib/strip_attributes.rb', line 39

def self.strip(record, options)
    attributes = self.narrow(record.attributes, options)

    if options
      allow_empty     = options[:allow_empty]
      collapse_spaces = options[:collapse_spaces]
      regex           = options[:regex]
    end

    attributes.each do |attr, value|
      original_value = value

      if value.respond_to?(:strip)
        value = (value.blank? && !allow_empty) ? nil : value.strip
      end

      if regex && value.respond_to?(:gsub!)
        value.gsub!(regex, '')
      end

      if MULTIBYTE_SUPPORTED
        # Remove leading and trailing Unicode invisible and whitespace characters.
        # The POSIX character class [:space:] corresponds to the Unicode class Z
        # ("separator"). We also include the following characters from Unicode class
        # C ("control"), which are spaces or invisible characters that make no
        # sense at the start or end of a string:
        #   U+180E MONGOLIAN VOWEL SEPARATOR
        #   U+200B ZERO WIDTH SPACE
        #   U+200C ZERO WIDTH NON-JOINER
        #   U+200D ZERO WIDTH JOINER
        #   U+2060 WORD JOINER
        #   U+FEFF ZERO WIDTH NO-BREAK SPACE
        if value.respond_to?(:gsub!)
          value.gsub!(/\A[[:space:]\u180E\u200B\u200C\u200D\u2060\uFEFF]+|[[:space:]\u180E\u200B\u200C\u200D\u2060\uFEFF]+\z/, '')
        end
      end

      if collapse_spaces && value.respond_to?(:squeeze!)
        value.squeeze!(' ')
      end

      record[attr] = value if original_value != value
    end
end

.validate_options(options) ⇒ Object 



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# File 'lib/strip_attributes.rb', line 84

def self.validate_options(options)
  if keys = options && options.keys
    unless (keys - VALID_OPTIONS).empty?
      raise ArgumentError, "Options does not specify #{VALID_OPTIONS} (#{options.keys.inspect})"
    end
  end
end