method

expand

v4.1.8 - Show latest stable - 0 notes - Class: ActiveRecord::PredicateBuilder

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expand(klass, table, column, value) public

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# File activerecord/lib/active_record/relation/predicate_builder.rb, line 50
    def self.expand(klass, table, column, value)
      queries = []

      # Find the foreign key when using queries such as:
      # Post.where(author: author)
      #
      # For polymorphic relationships, find the foreign key and type:
      # PriceEstimate.where(estimate_of: treasure)
      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

      queries << build(table[column], value)
      queries
    end

expand

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