or!

# File activerecord/lib/active_record/relation/query_methods.rb, line 671
    def or!(other) # :nodoc:
      incompatible_values = structurally_incompatible_values_for_or(other)

      unless incompatible_values.empty?
        raise ArgumentError, "Relation passed to #or must be structurally compatible. Incompatible values: #{incompatible_values}"
      end

      self.where_clause = self.where_clause.or(other.where_clause)
      self.having_clause = self.having_clause.or(other.having_clause)

      self
    end