如何将图像上传到cloudinary和如何将文件名上传到mongodb

Question

当我更新个人资料图片时，我的数据库获得空值。我已经尝试了很多次，但无法弄清楚我的错误。我想学习如何将图像上传到Cloudinary并将文件名保存到MongoDB。

注意：图像已成功上传到Cloudinary，但是在MongoDB中图像的值为空。

与Cloudinary代码的本地响应

const ChangePhoto = ({navigation, route}, props) => {
  const getDetails = type => {
    if (route.params) {
      switch (type) {
        case 'id':
          return route.params.id;
        case 'name':
          return route.params.name;
      }
    }
    return '';
  };

  const [image, setImage] = useState([]);
  const [name, setName] = useState(getDetails('name'));
  const [id, setId] = useState(getDetails('id'));

  const updateDetails = async () => {
    fetch('http://192.168.*.*:5000/avatar_update', {
      method: 'post',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        id: route.params._id,
        name,
        image: [image.name],
      }),
    })
      .then(res => res.json())
      .then(data => {
        Alert.alert(`${data.name} is updated successfuly`);
        navigation.navigate('Home');
      })
      .catch(err => {
        Alert.alert('someting went wrong');
      });
  };

  function selectImage() {
    let options = {
      title: 'You can choose one image',
      maxWidth: 256,
      maxHeight: 256,
      noData: true,
      mediaType: 'photo', // other values 'video', 'mixed'
      storageOptions: {
        skipBackup: true,
        path: 'images',
      },
    };

    ImagePicker.showImagePicker(options, response => {
      if (response.didCancel) {
        console.log('User cancelled photo picker');
      } else if (response.error) {
        console.log('ImagePicker Error: ', response.error);
      } else if (response.customButton) {
        console.log('User tapped custom button: ', response.customButton);
      } else {
        const source = {
          uri: response.uri,
          type: response.type,
          name:
            response.filename ||
            response.uri.substr(response.uri.lastIndexOf('/') + 1),
        };
        console.log({source});
        // ADD THIS
        cloudinaryUpload(source);
        // });
      }
    });
  }
  const cloudinaryUpload = image => {
    const data = new FormData();
    data.append('file', image);
    data.append('upload_preset', 'NepAus');
    data.append('cloud_name', 'dpwxgbsjg');
    fetch('https://api.cloudinary.com/v1_1/dpwxgbsjg/image/upload', {
      method: 'post',
      body: data,
    })
      .then(res => res.json())
      .then(data => {
        setImage(data.url);
      })
      .catch(err => {
        Alert.alert('An Error Occured While Uploading');
      });
  };

服务器端代码：

router.post("/avatar_update", requireToken, async (req, res) => {
  User.findByIdAndUpdate(req.user.id, {
    image: req.user.image,
  })
    .then((data) => {
      console.log(data);
      res.send(data);
    })
    .catch((err) => {
      console.log(err);
    });
});