Forms 反应JS无线电输入状态_Forms_Reactjs_Radio Button_React Jsx

Forms 反应JS无线电输入状态

forms reactjs

Forms 反应JS无线电输入状态,forms,reactjs,radio-button,react-jsx,Forms,Reactjs,Radio Button,React Jsx,使用React管理无线电状态和复选框的正确方法是什么在某些情况下，表单会呈现为部分完成，因此在第一次加载时会预先选择一些单选框和复选框我有下面的代码片段，无法使其按预期工作 var formData = { "id": 13951, "webform_id": 1070, "page": 0, "type": "radios", "name": "What industry are you in?", "tooltip": "", "weight": 0,

使用React管理无线电状态和复选框的正确方法是什么

在某些情况下，表单会呈现为部分完成，因此在第一次加载时会预先选择一些单选框和复选框

我有下面的代码片段，无法使其按预期工作

    var formData = {
  "id": 13951,
  "webform_id": 1070,
  "page": 0,
  "type": "radios",
  "name": "What industry are you in?",
  "tooltip": "",
  "weight": 0,
  "is_required": 1,
  "default_value": "",
  "validation": "",
  "allow_other_option": 0,
  "other_option_text": "",
  "mapped_question_id": "a295189e-d8b4-11e6-b2c5-022a69d30eef",
  "created_at": "2017-04-07 18:40:39",
  "updated_at": "2017-04-07 18:40:39",
  "option_conditional_from": null,
  "default_value_querystring_key": "",
  "deleted_at": null,
  "is_auto_save": 0,
  "is_component_number_hidden": 0,
  "is_component_inline": 0,
  "enable_confirm_validation": 0,
  "confirm_validation_text": null,
  "additional_options": "",
  "url_mapping": "",
  "webformcomponentoptions": [
    {
      "id": 13888,
      "webform_component_id": 13951,
      "key": "Hospitality",
      "value": "Hospitality",
      "created_at": "2017-04-07 18:40:39",
      "updated_at": "2017-04-07 18:40:39",
      "group": "",
      "selected" : false
    },
    {
      "id": 13889,
      "webform_component_id": 13951,
      "key": "Retail",
      "value": "Retail",
      "created_at": "2017-04-07 18:40:39",
      "updated_at": "2017-04-07 18:40:39",
      "group": "",
      "selected" : false
    },
    {
      "id": 13890,
      "webform_component_id": 13951,
      "key": "Other",
      "value": "Other",
      "created_at": "2017-04-07 18:40:39",
      "updated_at": "2017-04-07 18:40:39",
      "group": "",
      "selected" : false
    }
  ]
}

class WebformApp extends React.Component {
  render() {
    return (
      <form>
        <label>{this.props.webform.name}</label>
        <div className="group-wrapper">
          <Radio radio={this.props.webform.webformcomponentoptions} />
        </div>
      </form>
    )
  }
}

class Radio extends React.Component {
  render() {
    var options = [];
    this.props.radio.forEach(function(radio, i) {
      options.push(<Option option={radio} key={radio.id} index={i}  />);
    })
    return (
      <div>{options}</div>
    )
  }
}

class Option extends React.Component {
  constructor(props) {
    super(props);
    this.handleOptionChange = this.handleOptionChange.bind(this);
    this.state = {selectedIndex: null};
  }

  handleOptionChange(e) {
    this.setState({selectedIndex: this.props.index}, function() {
    });
  }

  render() {
    const selectedIndex = this.state.selectedIndex;
    return (
      <div>
        <input type="radio"
          value={this.props.option.value}
          name={this.props.option.webform_component_id}
          id={this.props.option.id}
          checked={selectedIndex === this.props.index}
          onChange={this.handleOptionChange} />
        <label htmlFor={this.props.option.id}>{this.props.option.key}</label>
      </div>
    )
  }
 }

ReactDOM.render(
  <WebformApp webform={formData} />,
  document.getElementById('app')
);

最重要的是让无线电组件处理状态，并跟踪所选选项

此外，我将通过使用map而不是forEach来简化，并为返回。为了简单起见，使用选项值来跟踪选定的状态而不是索引，并模仿React的select组件，允许使用默认值属性，而不是设置每个选项的选定属性（您似乎没有使用）

最后，为了秩序起见，将Radio:s Radio道具重命名为IMO更正确的选项。因此，请注意，我还没有测试过：

class WebformApp extends React.Component {
  render() {
    return (
      <form>
        <label>{this.props.webform.name}</label>
        <div className="group-wrapper">
          <Radio options={this.props.webform.webformcomponentoptions} value={this.props.webform.value} />
        </div>
      </form>
    )
  }
}

class Radio extends React.Component {
  constructor (props) {
    super(props)

    this.handleOptionChange = this.handleOptionChange.bind(this)
    this.state = {value: this.props.value}
  }

  render() {
    return this.props.options.map(this.getOption)
  }

  handleOptionChange (e) {
    this.setState({value: e.target.value})
  }

  getOption (option) {
    return (
      <div>
        <input type='radio'
          value={option.value}
          name={option.webform_component_id}
          id={option.id}
          key={option.id}
          checked={this.state.value === option.value}
          onChange={this.handleOptionChange} />
        <label htmlFor={option.id}>{option.key}</label>
      </div>
    )
  }
}

ReactDOM.render(
  <WebformApp webform={formData} />,
  document.getElementById('app')
);

非常感谢你的意见，莱纳斯。你让我走上了正确的道路，我通过以下方式解决了我的问题：