Question

我正在开发一个CRUD应用程序，必须更新我的地址和PIN码。我正在尝试使用Redux用获取的数据更新地址，但总是得到“ TypeError：无法读取未定义的属性'address'”我不知道代码有什么问题，因为相同的代码会更新City字段。

EditLocation.js

 const EditLocation = ({
  location: { location, loading },
  editLocation,
  getCurrentLocation,
  history,
  match
}) => {
  const [formData, setFormData] = useState({
    address: "",
    pinCode: ""
  });

  useEffect(() => {
    getCurrentLocation(match.params.id);

    setFormData({
      address: loading || !location.address ? "" : location.address, // i am getting error here code cant define location.adress
      pinCode: loading || !location.pinCode ? "" : location.pinCode
    });
  }, [loading, getCurrentLocation]);

  const onChangeHandler = e => {
    e.preventDefault();
    setFormData({ ...formData, [e.target.name]: e.target.value });
  };

  const onSubmitHandler = e => {
    e.preventDefault();
    editLocation(formData, history, match.params.id);
  };
   return (
<div>
</div>
)}
EditLocation.propTypes = {
  editLocation: PropTypes.func.isRequired,
  getCurrentLocation: PropTypes.func.isRequired,
  location: PropTypes.object.isRequired
};

const mapStateToProps = state => ({
  location: state.location
});

// alert(JSON.stringify(location.address));

export default connect(
  mapStateToProps,
  { editLocation, getCurrentLocation }
)(withRouter(EditLocation));

LocationAction.js

// Get current location
export const getCurrentLocation = id => async dispatch => {
  try {
    const res = await axios.get(`/api/location/${id}`);
    console.log(res.data.data.address);

    dispatch({
      type: types.GET_LOCATION,
      payload: res.data
    });
  } catch (err) {
    dispatch({
      type: types.LOCATION_ERROR,
      payload: { msg: err.response.statusText, status: err.response.status }
    });
  }
};

locationReducer.js

import * as types from "../../_actions/types";

const initialState = {
  location: null,
  locations: [],
  error: {},
  filtered: null,
  loading: true
};

export default function(state = initialState, action) {
  const { type, payload } = action;

  switch (type) {
    case types.GET_LOCATION:
      return {
        ...state,
        location: payload,
        loading: false
      };
default:
      return state;
  }
}

但是，当我使用Postman时，它工作正常，并且locationAction.js中的console.log(res.data.data.address);也会显示获取的数据，但是当我单击更新按钮时，它会显示TypeError。我重复了相同的代码，当我想更新City字段时，它工作正常。

ReactRedux我想更新状态，但总是收到“ TypeError：无法读取未定义的属性'地址'”相同的代码可以正常更新其他状态

0 个答案: