Redux传奇行为模式

这样的传奇故事非常成功:

function* getPosition() {
  yield navigator.geolocation.getCurrentPosition(function(pos) {
    console.log(`I am getPosition: ${pos.coords.latitude}, ${pos.coords.longitude}`);
  });
}

但我需要Redux状态树中的坐标。因此,我尝试了几种模式,但都不起作用。 1) 无法将变量移出getCurrentPosition范围

function* getPosition() {
  let position = {};
  yield navigator.geolocation.getCurrentPosition(function(pos) {
    position = pos;
  });
  // either
  console.log(`I am getPosition: ${position.coords.latitude}, ${position.coords.longitude}`);
  // or
  yield console.log(`I am getPosition: ${position.coords.latitude}, ${position.coords.longitude}`);
  // Any of two is undefined
}

2) 无法返回和赋值:

function* getPosition() {
  const position = yield navigator.geolocation.getCurrentPosition(function(pos) {
    return pos;
  });
  yield console.log(`I am getPosition: ${position.coords.latitude}, ${position.coords.longitude}`);
}

3) 方法put无效:

function* getPosition() {
  yield navigator.geolocation.getCurrentPosition(function(pos) {
    // Pos fetched
    console.log(`I am getPosition: ${pos.coords.latitude}, ${pos.coords.longitude}`);
    // Nothing happens. State is empty object.
    put({
      type: LOCATION_SET_POSITION,
      pos
    });
  });
}

locationReducer位于rootReducer的内部,其他工作减速机为:

locationReducer.js
export function locationReducer(state = {}, action) {
  switch (action.type) {
    case LOCATION_SET_POSITION:
      return action.pos
    default:
      return state;
  }
}

我没有actionCreater。据我所知, put 方法二者 调度操作并设置actionCreator。 如何将坐标放入状态树?