method

to_fs

v7.1.3.2 - Show latest stable - Class: Array

to_fs(format = :default)

public

Extends Array#to_s to convert a collection of elements into a comma separated id list if :db argument is given as the format.

This method is aliased to to_formatted_s.

Blog.all.to_fs(:db)  # => "1,2,3"
Blog.none.to_fs(:db) # => "null"
[1,2].to_fs          # => "[1, 2]"

# File activesupport/lib/active_support/core_ext/array/conversions.rb, line 94
  def to_fs(format = :default)
    case format
    when :db
      if empty?
        "null"
      else
        collect(&:id).join(",")
      end
    else
      to_s
    end
  end

to_fs

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