ForwardRef 警告 React-hook-forms 与 Material UI TextField

我正在尝试使用 React-hook-forms 和 Material UI 的输入构建一个表单（在本例中是我的 TextField 的自定义变体）。尽管该表单似乎工作完全正常，但在渲染表单时它会在控制台中触发警告消息。

警告：不能给函数组件提供引用。尝试去 访问此引用将失败。您的意思是使用 React.forwardRef() 吗？

我正在使用react-hook-form的控制器来包装我的TextField（按照文档的建议）

非常欢迎任何建议或解决方案！

在发生此问题的 TextField 组件和表单下方：

组件文本字段

const TextField = props => {
    const {
        icon,
        disabled,
        errors,
        helperText,
        id,
        label,
        value,
        name,
        required,
        ...rest
      } = props;

    const classes = useFieldStyles();
    
    return (
        <MuiTextField 
            {...rest}
            name={name}
            label={label}
            value={value || ''}
            required={required}
            disabled={disabled}
            helperText={helperText}
            error={errors}
            variant="outlined" 
            margin="normal" 
            color="primary"
            InputProps={{
                startAdornment: icon,
                classes: {
                    notchedOutline: classes.outline,
                },
            }}
            InputLabelProps={{
                className: classes.inputLabel,
            }}
        />
    )
};

TextField.propTypes = {
    icon: PropTypes.node,
    disabled: PropTypes.bool,
    label: PropTypes.string,
    id: PropTypes.string,
    value: PropTypes.any,
    required: PropTypes.bool,
    helperText: PropTypes.string,
};

export default TextField;

组件登录表单

const LoginForm = () => {
    const { handleSubmit, errors, control } = useForm();
    const onSubmit = values => console.log(values);

    return (
        <form onSubmit={handleSubmit(onSubmit)}>
            <Typography variant="h5" color="primary" gutterBottom>
                Login
            </Typography>

            <Box py={3} height="100%" display="flex" flexDirection="column">
                <Controller
                    as={TextField}
                    label="Username"
                    name="username"
                    control={control}
                    errors={errors}
                    required
                />

                <Controller
                    as={TextField}
                    label="Password"
                    type="password"
                    name="password"
                    control={control}
                    errors={errors}
                    required
                />

                <Link>
                    Forgot your password?
                </Link>
            </Box>

            <Button variant="contained" color="primary" fullWidth type="submit">
                Submit
            </Button>
        </form>
    )
};

尝试使用Controller的 render prop 而不是as，因为 TextField 暴露的 ref 实际上称为 inputRef，而Controller正在尝试访问ref.

import React, { useState } from "react";
import ReactDOM from "react-dom";
import { useForm, Controller } from "react-hook-form";
import Header from "./Header";
import { TextField, ThemeProvider, createMuiTheme } from "@material-ui/core";
import "react-datepicker/dist/react-datepicker.css";

import "./styles.css";
import ButtonsResult from "./ButtonsResult";

let renderCount = 0;

const theme = createMuiTheme({
  palette: {
    type: "dark"
  }
});

const defaultValues = {
  TextField: "",
  TextField1: ""
};

function App() {
  const { handleSubmit, reset, control } = useForm({ defaultValues });
  const [data, setData] = useState(null);
  renderCount++;

  return (
    <ThemeProvider theme={theme}>
      <form onSubmit={handleSubmit((data) => setData(data))} className="form">
        <Header renderCount={renderCount} />
        <section>
          <label>MUI TextField</label>
          <Controller
            render={(props) => (
              <TextField
                value={props.value}
                onChange={props.onChange}
                inputRef={props.ref}
              />
            )}
            name="TextField"
            control={control}
            rules={{ required: true }}
          />
        </section>

        <section>
          <label>MUI TextField</label>
          <Controller
            render={(props) => (
              <TextField
                value={props.value}
                onChange={props.onChange}
                inputRef={props.ref}
              />
            )}
            name="TextField1"
            control={control}
            rules={{ required: true }}
          />
        </section>

        <ButtonsResult {...{ data, reset, defaultValues }} />
      </form>
    </ThemeProvider>
  );
}

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

您可以单击以下链接了解实际行为，现在使用控制器正确分配了 ref，我们可以在出现错误时成功关注该字段，以实现更好的可访问性。

https://codesandbox.io/s/react-hook-form-focus-74ecu https://codesandbox.io/s/react-hook-form-focus-74ecu