<%- assert_locals field -%>
<%- field_name_interpolated = "request_pb.#{field.name}" -%>
<%- has_field_name_interpolated = "request_pb.has_#{field.name}?" -%>
<%- if field.proto3_optional? -%>
query_string_params["<%= field.camel_name %>"] = <%= field_name_interpolated %>.to_s if <%= has_field_name_interpolated %>
<%- else -%>
query_string_params["<%= field.camel_name %>"] = <%= field_name_interpolated %>.to_s
<%- end -%>