如何将包含组件'状态的值传递回父组件

我有一个问题，找到一种方法来轻松地从其他组件中的组件获取状态值。当我点击任何标签

如果标签被单击，我想在表单组件的列表状态中添加标签的值。有什么简单的方法吗?

我有一个这样的组件:

var Tag = React.createClass({
  getInitialState: function(){
    return {
      checked: false
    };
  },
  componentDidMount: function() {
    this.setState({
      checked: false
    });
  },
  _onChange: function(event) {
     if(this.state.checked == false){
       this.setState({
         checked: true
       });
     } else {
       this.setState({
         checked: false
       });
     }
  },
  render: function() {
    return (
      <div className="review-tag">
        <input
          type="checkbox"
          id={this.props.id}
          name={this.props.name}
          checked={this.state.checked}
          value={this.props.id}/>
        <label htmlFor={this.props.name} onClick={this._onChange}>{this.props.name}</label>
      </div>
    );
    return (
      <div>
        <span>{this.props.name}</span>
      </div>
    );
  }
});
var allTags = tags;
var ReviewTag = React.createClass({
  render: function() {
    const tagComps = allTags.map(function(tag){
      return <Tag {...tag}/>;
    });
    return (
      <div>
        {tagComps}
      </div>
    );
  }
});

标签组件在渲染时包含值，我必须在我的ReviewForm组件中获得每个标签的值，它看起来像这样:

var fd = new FormData();
var ReviewForm = React.createClass({
  getInitialState: function(){
    return {
      Author: '',
      Tags: ''
    };
  },
  componentDidMount: function() {
    this.setState({
      Author: author,
      Tags: tags
    });
  },
  submit: function (e){
    var self;
    e.preventDefault();
    self = this;
    var data = {
      tags: this.state.Tags,
      author: this.state.Author
    };
    for (var key in data) {
      fd.append(key, data[key]);
    }
    $.ajax({
      type: 'POST',
      url: '/reviews/submit/',
      data: fd,
      processData: false,
      contentType: false
    })
    .done(function(data) {
      console.log('Review added successfully.');
    })
    .error(function(msg) {
      var errors = msg.responseJSON;
      console.log(errors);
    });
  },
  render: function() {
    <div className="scolumn">
       <ReviewTag/>
    </div>
  }
})

非常感谢您的帮助