Question

当用户单击“添加按钮注册”表单添加到屏幕时，我正在React Web中进行动态开发。在注册表单中，我正在使用formik集成进行验证。表单是动态成功添加的，但是每当我开始在输入框中输入任何内容时，控制台中都会出现以下错误

index.js:1 Warning: A component is changing an uncontrolled input of type text to be controlled. Input elements should not switch from uncontrolled to controlled (or vice versa). Decide between using a controlled or uncontrolled input element for the lifetime of the component.

我不确定哪里出了问题。以下是我的动态表单呈现代码-

Account.js

import React, { Component } from 'react';
import axios from 'axios';
import {Card, CardBody, CardHeader,Button,Col, Row, Form, Container} from 'reactstrap';
import { Formik, Field, ErrorMessage } from 'formik';
import WrapperForm from './WrapperForm'

class Account extends Component {

state = {
    wrapperForm: [{}],
}

constructor(props) {
    super(props);
}

addUser = (e) => {
    this.setState((prevState) => ({
        wrapperForm: [...prevState.wrapperForm, {}],
    }));
}

render() {
    let {wrapperForm} = this.state
    return (
        <Form >
            <Container className="themed-container" fluid={true}>
                <button type="button" onClick={this.addUser}>Add User</button>
                <WrapperForm wrapperForm={wrapperForm} />
            </Container>
        </Form>
    );
}
}

export default Account;

WrapperForm.js

const WrapperForm = (props) => {
return (
    props.wrapperForm.map((val, idx)=> {
            return (
                <Formik 
                    key={idx}
                    initialValues={{
                        email: props.wrapperForm[idx].email || '',
                        password: props.wrapperForm[idx].password || '',
                        firstName: props.wrapperForm[idx].firstName || '',
                        lastName: props.wrapperForm[idx].lastName || '',
                        zipCode: props.wrapperForm[idx].zipCode ||  ''
                    }}
                >
                    {({ values }) => (
                        <Row style={{marginBottom: "2em"}} >
                            <Card>
                                <CardHeader>Register</CardHeader>
                                <CardBody>
                                    <Temp index={idx} />
                                </CardBody>
                            </Card>
                        </Row>
                    )}
                </Formik>  
            )
        }
    )
)
}

来自

的某些代码

Temp.js

const Temp = ({index}) => {
let passwordId = 'password-'+ index ;
let firstNameId = 'firstName-'+ index;
let lastNameId = 'lastName-'+ index;
let zipCodeId = 'zipCode-'+ index;
return (
    <Card body outline color="primary">
        <CardTitle>Create Profile</CardTitle>

            <Row form>
                <Col md={6}>
                    <Field
                        type="email"
                        label="Email"
                        name="email"
                        data-id={index}
                        placeholder="Email"
                        component={customInputForm}
                        id="email"
                        className="email"
                    />
                </Col>

Answer 1

我找到了一种解决方案，可能会帮助某人-

需要为formik创建动态initialValues，例如-

        let passwordId = 'password-'+ idx ;
        let firstNameId = 'firstName-'+ idx;
        let lastNameId = 'lastName-'+ idx;
        let zipCodeId = 'zipCode-'+ idx;
            return (
                <Formik 
                    key={idx}
                    initialValues={{
                        email: props.wrapperForm[idx].email || '',
                        [passwordId]: props.wrapperForm[idx].password || '',
                        [firstNameId]: props.wrapperForm[idx].firstName || '',
                        [lastNameId]: props.wrapperForm[idx].lastName || '',
                        [zipCodeId]: props.wrapperForm[idx].zipCode ||  ''
                    }}
                >

formik警告，组件正在更改要控制的文本类型的不受控制的输入

1 个答案: