React-Bootstrap 从 Form-Select 获取值 [英] React-Bootstrap get value from Form-Select

问题描述

我有一个 React Bootstrap Form 组件，我想在其中获取选择表单控件的值.我试图用 onChange 更新我的钩子的值，但我似乎无法让它工作(类型始终保持为空字符串)，我当前的代码如下.

I have a React Bootstrap Form component, in which I want to get the value of a select form control. I tried to update the value of one my hooks with an onChange, but I can't seem to get it to work (type always stays as an empty string), my current code is as follows.

const [type, setType]: any = useState('');
render(
<Form.Group controlId="formBasicSelect">
     <Form.Label>Select Norm Type</Form.Label>
     <Form.Control as="select" >
        <option value="DICTUM">Dictamen</option>
        <option value="CONSTANCY">Constancia</option>
        <option value="COMPLEMENT">Complemento</option>
     value={type}
     onChange={(e: any) => setText(e.target.value)}
     </Form.Control>
 </Form.Group>
);

类似的方法适用于其他 Form 控件，但可能与 select 有所不同.

Similar approaches worked with other Form controls, but maybe there is something different about select.

推荐答案

value 和 onChange 需要成为 Form.Control (作为道具).你把他们当孩子了，所以问题就来了.

value and onChange needs to be part of Form.Control (as a prop). You have put them as children and hence the issue.

您的工作副本代码在这里

工作代码片段

    <Form.Group controlId="formBasicSelect">
        <Form.Label>Select Norm Type</Form.Label>
        <Form.Control
          as="select"
          value={type}
          onChange={e => {
            console.log("e.target.value", e.target.value);
            setType(e.target.value);
          }}
        >
          <option value="DICTUM">Dictamen</option>
          <option value="CONSTANCY">Constancia</option>
          <option value="COMPLEMENT">Complemento</option>
        </Form.Control>
      </Form.Group>

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