SolidJS•13mo ago

Set headers inside createServerAction$()

Hey folks, I am currently trying to explicitely set my content type header to Content-Type: application/json; charset=utf-8 because of some encoding issues. However I don't quite understand how I can do so inside a call of createServerAction$(). I tried to access responseHeaders from useRequest(), however they seem to be always undefined:

  const [chartData, submitChartOptions] = createServerAction$(
    async (opts: { type: ChartType; options: SubmitChartOptions }) => {
      const { responseHeaders } = useRequest();

      const result = await generateChartDataByType(opts);

      responseHeaders.set("Content-Type", "application/json; charset=utf-8");

      return result;
    }
  );

  const [chartData, submitChartOptions] = createServerAction$(
    async (opts: { type: ChartType; options: SubmitChartOptions }) => {
      const { responseHeaders } = useRequest();

      const result = await generateChartDataByType(opts);

      responseHeaders.set("Content-Type", "application/json; charset=utf-8");

      return result;
    }
  );

Any idea, what I am doing wrong here? Thanks in advance

1 Reply

eudrino•13mo ago

I believe responseHeaders is read-only here, not sure but using Response should work

const resp = new Response(JSON.stringify(result), { headers: { 'Content-Type': "application/json; charset=utf-8" }});

const resp = new Response(JSON.stringify(result), { headers: { 'Content-Type': "application/json; charset=utf-8" }});

also, if the intended goal is to send json, it's suggested to use the json function from solid-start, using it will simplify the code above to:

const resp = json(result);
return resp;

const resp = json(result);
return resp;

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Set headers inside createServerAction$()