instance method `to_formatted_s`

Ruby on Rails 4.0.13

Since v3.0.20

Available in: v3.0.20 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:

to_formatted_s(format = :default)

Converts a collection of elements into a formatted string by calling to_s on all elements and joining them. Having this model:

class Blog < ActiveRecord::Base
  def to_s
    title
  end
end

Blog.all.map(&:title) #=> ["First Post", "Second Post", "Third post"]

to_formatted_s shows us:

Blog.all.to_formatted_s # => "First PostSecond PostThird Post"

Adding in the :db argument as the format yields a comma separated id list:

Blog.all.to_formatted_s(:db) # => "1,2,3"

Parameters

format opt = :default

Source

# File activesupport/lib/active_support/core_ext/array/conversions.rb, line 104
  def to_formatted_s(format = :default)
    case format
    when :db
      if empty?
        'null'
      else
        collect { |element| element.id }.join(',')
      end
    else
      to_default_s
    end
  end

Defined in activesupport/lib/active_support/core_ext/array/conversions.rb line 104 · View on GitHub · Improve this page · Find usages on GitHub

Defined in Array

Signature

Parameters