Question

自从升级到使用Gatsby V2以来，我一直在努力将this.state传递给子组件以用作this.props。

例如，我有一个容器，其中将data1和data2添加为this.state，

class Parent extends React.Component {
constructor(props) {
    super(props);
    this.state = {
      data1: '',
      data2: ''
    };
  }

componentDidMount() {
   // Loading database
   .then(doc =>
    this.setState({
      data1: doc.data().data1,
      data2: doc.data().data2
    })
  );
}
  render() {
    const children = this.props;
    const stateAsProps = React.Children.map(children, child =>
      React.cloneElement(child, {
        data1: this.state.data1,
        data2: this.state.data2
      })
    );

    return (
        <div>{stateAsProps}</div>
    );
  }
}

，子组件为

class Child extends Component {
constructor(props) {
    super(props);
    this.state = {};
  }

  render() {
    return (
      <h1>{this.props.data1}</h1>
      <p>{this.props.data2}</p>
    );
  }
}

最后将其带入页面

const Page = () => (
  <Parent authUserID="01234" campaignID="56789">
    <Child />
  </Parent>
);

在Gatsby V1中，它可以正常工作，但是现在进行迁移时，我收到错误Uncaught Error: Objects are not valid as a React child (found: object with keys {authUserID, campaignID, children}). If you meant to render a collection of children, use an array instead.

有人可以建议为什么和如何解决此问题吗？

Answer 1

您正在将整个props对象用作import os srcdir = "/home/pi/math/" def sum_file_contents(): value = float() for file in os.listdir(srcdir): if file.endswith(('math')): value += float(open(os.path.join(srcdir, file), "r").read().strip()) return value print(sum_file_contents())组件中的子对象。确保您从道具中解散了def calculate_output_shape(input, filter_size_h, filter_size_w, stride_h, stride_w, num_outputs, padding='SAME', data_format='NHWC'): #calculation of the output_shape: if data_format == "NHWC": input_channel_size = input.get_shape().as_list()[3] input_size_h = input.get_shape().as_list()[1] input_size_w = input.get_shape().as_list()[2] stride_shape = [1, stride_h, stride_w, 1] if padding == 'VALID': output_size_h = (input_size_h - 1)*stride_h + filter_size_h output_size_w = (input_size_w - 1)*stride_w + filter_size_w elif padding == 'SAME': output_size_h = (input_size_h - 1)*stride_h + 1 output_size_w = (input_size_w - 1)*stride_w + 1 else: raise ValueError("unknown padding") output_shape = tf.stack([tf.shape(input)[0], output_size_h, output_size_w, num_outputs]) elif data_format == "NCHW": input_channel_size = input.get_shape().as_list()[1] input_size_h = input.get_shape().as_list()[2] input_size_w = input.get_shape().as_list()[3] stride_shape = [1, 1, stride_h, stride_w] if padding == 'VALID': output_size_h = (input_size_h - 1)*stride_h + filter_size_h output_size_w = (input_size_w - 1)*stride_w + filter_size_w elif padding == 'SAME': output_size_h = (input_size_h - 1)*stride_h + 1 output_size_w = (input_size_w - 1)*stride_w + 1 else: raise ValueError("unknown padding") output_shape = tf.stack([tf.shape(input)[0], output_size_h, output_size_w, num_outputs]) else: raise ValueError("unknown data_format") return output_shape对象，该对象将按预期工作。

df.registerTempTable("dfTbl")
dfNew= spark.sql("""
             SELECT *, cast(time/1000 as Timestamp) as newTIMESTMP 
             FROM dfTbl d
          """)

将儿童道具传递到Gatsby V2中的子组件

1 个答案: