instance method `blank?`

Ruby on Rails 3.2.22.5

Since v3.1.12

Available in: v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

blank?()

A string is blank if it’s empty or contains whitespaces only:

"".blank?                 # => true
"   ".blank?              # => true
"　".blank?               # => true
" something here ".blank? # => false

Source

# File activesupport/lib/active_support/core_ext/object/blank.rb, line 102
  def blank?
    # 1.8 does not takes [:space:] properly
    if encoding_aware?
      self !~ /[^[:space:]]/
    else
      self !~ NON_WHITESPACE_REGEXP
    end
  end

Defined in activesupport/lib/active_support/core_ext/object/blank.rb line 102 · View on GitHub · Improve this page · Find usages on GitHub

Defined in String

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