class Object

Taken from ActiveSupport core_ext/object/blank

Public Instance Methods

blank?() click to toggle source

An object is blank if it’s false, empty, or a whitespace string. For example, ”, ‘ ’, nil, [], and {} are all blank.

This simplifies

address.nil? || address.empty?

to

address.blank?

@return [true, false]

# File vendor/gems/process_manager/lib/blank.rb, line 38
def blank?
  respond_to?(:empty?) ? !!empty? : !self
end
presence() click to toggle source

Returns the receiver if it’s present otherwise returns nil. object.presence is equivalent to

object.present? ? object : nil

For example, something like

state = params if params.present? country = params if params.present? region = state || country || ‘US’

becomes

region = params.presence || params.presence || ‘US’

@return [Object]

# File vendor/gems/process_manager/lib/blank.rb, line 65
def presence
  self if present?
end
present?() click to toggle source

An object is present if it’s not blank.

@return [true, false]

# File vendor/gems/process_manager/lib/blank.rb, line 45
def present?
  !blank?
end