instance method `foreign_key`

Ruby on Rails 5.2.8.1

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:

foreign_key(separate_class_name_and_id_with_underscore = true)

Creates a foreign key name from a class name. separate_class_name_and_id_with_underscore sets whether the method should put ‘_’ between the name and ‘id’.

'Message'.foreign_key        # => "message_id"
'Message'.foreign_key(false) # => "messageid"
'Admin::Post'.foreign_key    # => "post_id"

Parameters

separate_class_name_and_id_with_underscore opt = true

Source

# File activesupport/lib/active_support/core_ext/string/inflections.rb, line 251
  def foreign_key(separate_class_name_and_id_with_underscore = true)
    ActiveSupport::Inflector.foreign_key(self, separate_class_name_and_id_with_underscore)
  end

Defined in activesupport/lib/active_support/core_ext/string/inflections.rb line 251 · View on GitHub · Improve this page · Find usages on GitHub

Defined in String

Signature

Parameters