Class Object
In: lib/fission/core_ext/object.rb
Parent: Object

this is from active_support github.com/rails/rails/activesupport

Methods

blank?   presence   present?  

Public Instance methods

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

This simplifies:

  if !address.nil? && !address.empty?

…to:

  if !address.blank?

Returns object if it‘s present? otherwise returns nil. object.presence is equivalent to object.present? ? object : nil.

This is handy for any representation of objects where blank is the same as not present at all. For example, this simplifies a common check for HTTP POST/query parameters:

  state   = params[:state]   if params[:state].present?
  country = params[:country] if params[:country].present?
  region  = state || country || 'US'

…becomes:

  region = params[:state].presence || params[:country].presence || 'US'

An object is present if it‘s not blank?.

[Validate]