生成器功能不显示我的数据，如何访问它？

Question

I have to invoke an API using sagas and generator function. Here is my code:

export function* fetchCreate(data) {
  try {
    const options = jsonBodyOptions(data);
    const tagResponse = yield call(
      fetchJson,
      apiPath + '/fetch',
      tagOptions
    );
    return tagResponse;
  } catch (err) {
    console.log(err);
  }
}

export function* callFetch(data)  {
   const response = fetchCreate(data);
}

If I print fetchCreate() , I see Generator function printed.

I want to invoke that generator function from another function in the same file. I mainly want the response from that function but basically its returning a generator. How can I retrieve the response from it?

Answer 1

Try using yield call(...)

export function* callFetch(data) {
   const response = yield call(fetchCreate, data);
}

If fetchJson returns a promise, then you can optionally convert fetchCreate into a plain function that returns a promise instead of a generator because yield call works with functions that return promises.

export function fetchCreate(data) {
  try {
    const options = jsonBodyOptions(data);
    return fetchJson(apiPath + '/fetch', tagOptions);    
  } catch (err) {
    console.log(err);
  }
}