forms - react : how to use child FormItem components without getting Warning: validateDOMNesting: cannot appear as a descendant of

Question

给定父组件，我正在使用子组件 DynamicFieldSet这是一组FormItems 。但我收到错误:

Warning: validateDOMNesting(...): <form> cannot appear as a descendant of <form>. See CreateTopic > Form > form > ... > DynamicFieldSet > Form > form.

我尝试删除 <Form> </Form>我的子组件中的标签，但这是一个编译错误。

有没有办法可以禁用子表单 View 的渲染？

父组件

class CreateTopic extends React.Component {
render() {
    return (
      <div className="create-topic-container">
        <h3>Create an event</h3>
        <Form onSubmit={this.handleSubmit}>
          <FormItem>...</FormItem>
          <FormItem>...</FormItem>
          <FormItem>...</FormItem>
          <FormItem
            {...formItemLayout}
            label="Results"
            style={{ marginBottom: SPACING_FORM_ITEM }}
          >
            {getFieldDecorator('results', {
              rules: [
                {
                  required: true,
                  message: 'Results cannot be empty.',
                },
              ],
            })(<DynamicFieldSet
              form={this.props.form}
            />)}
          </FormItem>
        </Form>
      </div>
    );
  }
}

DynamicFieldSet - 子组件

export class DynamicFieldSet extends React.Component {
  render() {
    getFieldDecorator('keys', { initialValue: ['0', '1'] });
    const keys = getFieldValue('keys');
    const formItems = keys.map((k, index) => {
      return (
        <FormItem
          {...formItemLayoutWithOutLabel}
          required={false}
          key={k}
        >
          {getFieldDecorator(`results[${k}]`, {
            validateTrigger: ['onChange', 'onBlur'],
            rules: [
              {
                required: true,
                whitespace: true,
                message: 'Result name cannot be empty.',
              },
              {
                validator: this.validateLength,
              },
            ],
          })(<Input placeholder={`Result #${index + 1}`} style={{ width: '80%', marginRight: 8 }} />)}
          {keys.length > 2 ? (
            <Icon
              className="dynamic-delete-button"
              type="minus-circle-o"
              disabled={keys.length === 1}
              onClick={() => this.remove(k)}
            />
          ) : null}
        </FormItem>
      );
    });

    return (
      <Form>
        {formItems}
        <FormItem {...formItemLayoutWithOutLabel}>
          {keys.length < 10 ? (
            <Button type="dashed" onClick={this.add} style={{ width: '80%' }}>
              <Icon type="plus" />Add Result
            </Button>
          ) : null}
        </FormItem>
      </Form>
    );
  }
}

Answer 1

我在使用ant design table时遇到了这个问题，结果发现它不是引发警告的ant design。这是网络标准description

“每个表单都必须包含在 FORM 元素内。单个文档中可以有多个表单，但 FORM 元素不能嵌套。”

因此，表单标签内不应该有表单标签。

要解决该问题(在我们的例子中)，请删除 DynamicFieldSet“return”内的 Form 标记，并替换为 div 标记

希望有帮助:)