to_h

# File activerecord/lib/active_record/relation/where_clause.rb, line 47
      def to_h(table_name = nil)
        equalities = predicates.grep(Arel::Nodes::Equality)
        if table_name
          equalities = equalities.select do |node|
            node.left.relation.name == table_name
          end
        end

        binds = self.binds.map { |attr| [attr.name, attr.value] }.to_h

        equalities.map { |node|
          name = node.left.name
          [name, binds.fetch(name.to_s) {
            case node.right
            when Array then node.right.map(&:val)
            when Arel::Nodes::Casted, Arel::Nodes::Quoted
              node.right.val
            end
          }]
        }.to_h
      end