Module: Kasket::SelectManagerMixin

Defined in:
lib/kasket/select_manager_mixin.rb

Instance Method Summary collapse

Instance Method Details

#to_kasket_query(klass, binds = []) ⇒ Object 



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# File 'lib/kasket/select_manager_mixin.rb', line 3

def to_kasket_query(klass, binds = [])
  begin
    query = Kasket::Visitor.new(klass, binds).accept(ast)
  rescue TypeError # unsupported object in ast
    return nil
  end

  return nil if query.nil? || query == :unsupported
  return nil if query[:attributes].blank?

  query[:index] = query[:attributes].map(&:first)

  if query[:limit]
    return nil if query[:limit] > 1
    # return nil if !query[:index].include?(:id)
  end

  if query[:index].size > 1 && query[:attributes].any? { |attribute, value| value.is_a?(Array) }
    return nil
  end

  query[:key] = klass.kasket_key_for(query[:attributes])
  query[:key] << '/first' if query[:limit] == 1 && !query[:index].include?(:id)

  query
end