method

can_find_inverse_of_automatically?

v5.2.3 - Show latest stable - 0 notes - Class: ActiveRecord::Reflection::AssociationReflection

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0
3.0.9
3.1.0
3.2.1
3.2.8
3.2.13
4.0.2
4.1.8 (0)
4.2.1 (0)
4.2.7 (0)
4.2.9 (0)
5.0.0.1 (0)
5.1.7 (0)
5.2.3 (-8)
6.0.0 (0)
6.1.3.1 (0)
6.1.7.7 (0)
7.0.0 (-38)
7.1.3.2 (0)
7.1.3.4 (0)
What's this?

can_find_inverse_of_automatically?(reflection) private

Checks to see if the reflection doesn’t have any options that prevent us from being able to guess the inverse automatically. First, the inverse_of option cannot be set to false. Second, we must have has_many, has_one, belongs_to associations. Third, we must not have options such as :foreign_key which prevent us from correctly guessing the inverse association.

Anything with a scope can additionally ruin our attempt at finding an inverse, so we exclude reflections with scopes.

Show source

# File activerecord/lib/active_record/reflection.rb, line 647
        def can_find_inverse_of_automatically?(reflection)
          reflection.options[:inverse_of] != false &&
            VALID_AUTOMATIC_INVERSE_MACROS.include?(reflection.macro) &&
            !INVALID_AUTOMATIC_INVERSE_OPTIONS.any? { |opt| reflection.options[opt] } &&
            !reflection.scope
        end

can_find_inverse_of_automatically?

Related methods