NilClass

Methods

nil is blank:

nil.blank? # => true

@return [true]

📝 Source code

# File activesupport/lib/active_support/core_ext/object/blank.rb, line 56
def blank?
  true
end

🔎 See on GitHub

Returns self.

📝 Source code

# File activesupport/lib/active_support/core_ext/object/to_query.rb, line 26
def to_param
  self
end

🔎 See on GitHub

Returns a CGI-escaped key.

📝 Source code

# File activesupport/lib/active_support/core_ext/object/to_query.rb, line 21
def to_query(key)
  CGI.escape(key.to_param)
end

🔎 See on GitHub

Calling try on nil always returns nil. It becomes especially helpful when navigating through associations that may return nil.

nil.try(:name) # => nil

Without try

@person && @person.children.any? && @person.children.first.name

With try

@person.try(:children).try(:first).try(:name)

📝 Source code

# File activesupport/lib/active_support/core_ext/object/try.rb, line 148
def try(*, &)
  nil
end

🔎 See on GitHub

Calling try! on nil always returns nil.

nil.try!(:name) # => nil

📝 Source code

# File activesupport/lib/active_support/core_ext/object/try.rb, line 155
def try!(*, &)
  nil
end

🔎 See on GitHub