Class: ActiveRecord::PredicateBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/composite_primary_keys/relation/predicate_builder.rb

Class Method Summary collapse

Class Method Details

.expand(klass, table, column, value) ⇒ Object 



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# File 'lib/composite_primary_keys/relation/predicate_builder.rb', line 3

def self.expand(klass, table, column, value)
  queries = []
  if klass && reflection = klass.reflect_on_association(column.to_sym)
    if reflection.polymorphic? && base_class = polymorphic_base_class_from_value(value)
      queries << build(table[reflection.foreign_type], base_class)
    end

    column = reflection.foreign_key
  end

  #CPK
  if Base === value && value.composite?
    queries << cpk_id_predicate(table, column, value.id)
  else
    queries << build(table[column], value)
  end
  queries
end