Module: Alchemy::RelatableResource

Extended by:

ActiveSupport::Concern

Included in:

Attachment, Picture

Defined in:

app/models/concerns/alchemy/relatable_resource.rb

Constant Summary

RELATED_INGREDIENTS_SUBQUERY =

SQL subquery selecting related_object_id values for ingredients that reference a given polymorphic type. Intended to be composed into a NOT IN (…) clause by deletable and any overrides in including classes. Takes one named bind :type - the polymorphic type name, typically the class name of the including model (e.g. “Alchemy::Attachment”).

<<~SQL.squish
  SELECT related_object_id
  FROM alchemy_ingredients
  WHERE related_object_id IS NOT NULL
    AND related_object_type = :type
SQL

Instance Method Summary

• #deletable? ⇒ Boolean

  Returns true if object is not assigned to any ingredient.

Instance Method Details

#deletable? ⇒ Boolean

Returns true if object is not assigned to any ingredient.

Returns:

• (Boolean)

# File 'app/models/concerns/alchemy/relatable_resource.rb', line 48

def deletable?
  related_ingredients.none?
end