Module: Plutonium::ActionPolicy::StiPolicyLookup

Defined in:
lib/plutonium/action_policy/sti_policy_lookup.rb

Overview

Custom ActionPolicy lookup resolver for STI (Single Table Inheritance) models This resolver attempts to find a policy for the base class when a policy for the STI subclass is not found

Constant Summary collapse

STI_BASE_CLASS_LOOKUP =

STI base class policy resolver Checks if the record is an STI model and looks up the policy for its base class

->(record, namespace: nil, strict_namespace: false, **) {
  # Skip if record is a symbol or doesn't have a class
  next unless record.respond_to?(:class)

  record_class = record.is_a?(Module) ? record : record.class

  # Check if this is an STI model (has base_class and is different from current class)
  next unless record_class.respond_to?(:base_class)
  next if record_class == record_class.base_class

  # Try to find policy for the base class
  policy_name = "#{record_class.base_class}Policy"
  ::ActionPolicy::LookupChain.send(:lookup_within_namespace, policy_name, namespace, strict: strict_namespace)
}

Class Method Summary collapse

Class Method Details

.install! ⇒ Object 



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# File 'lib/plutonium/action_policy/sti_policy_lookup.rb', line 27

def install!
  # Insert STI resolver before the standard INFER_FROM_CLASS resolver
  # This ensures we try the base class before giving up
  infer_index = ::ActionPolicy::LookupChain.chain.index(::ActionPolicy::LookupChain::INFER_FROM_CLASS)

  if infer_index
    # Insert after INFER_FROM_CLASS so it runs as a fallback
    ::ActionPolicy::LookupChain.chain.insert(infer_index + 1, STI_BASE_CLASS_LOOKUP)
  else
    # If for some reason INFER_FROM_CLASS isn't found, append to end
    ::ActionPolicy::LookupChain.chain << STI_BASE_CLASS_LOOKUP
  end
end