Question

我将我的小项目重写为material-ui，我正在使用这个材料-ui-next reactjs库; 对于一个组件withStyle decorator工作得很好，另一个组件没有用样式装饰组件并且拖出这个错误：

未捕获的TypeError：无法读取属性＆＃39; root＆＃39;未定义的在Respondent.render（MuiRespondent.tsx：48）在vendor.js？v = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeiaBZq7AE：30228 at measureLifeCyclePerf（vendor.js？v = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeiaBZq7AE：29508）在ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext （？vendor.js V = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeIABZq7AE：30227）在ReactCompositeComponentWrapper._renderValidatedComponent（vendor.js？v = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeiaBZq7AE：30254）在ReactCompositeComponentWrapper.performInitialMount（vendor.js？v = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeiaBZq7AE：29794）在ReactCompositeComponentWrapper.mountComponent（vendor.js？v = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeiaBZq7AE：29690） at Object.mountComponent（vendor.js？v = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeiaBZq7AE：12868）在ReactCompositeComponentWrapper._updateRenderedComponent（vendor.js？v = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeiaBZq7AE：30197）在ReactCompositeComponentWrapper._performComponentUpdate（vendor.js？v = OjVxDpV6p_Jfz2P38F_R2lc3pjVsUisUejeiaBZq7AE：30156）

抛出错误的组件：

import * as React from 'react';
import Button from 'material-ui/Button';
import Dialog, {
  DialogTitle,
  DialogContent,
  DialogContentText,
  DialogActions,
} from 'material-ui/Dialog';
import Typography from 'material-ui/Typography';
import withStyles, { WithStyles, StyleRulesCallback } from 'material-ui/styles/withStyles';
import { RouteComponentProps } from 'react-router';
import withRoot from '../../withRoot';

const styles: StyleRulesCallback<'root'> = theme => ({
  root: {
    textAlign: 'center',
    paddingTop: theme.spacing.unit * 20,
  },
});

type State = {
  open: boolean;
};

export class Respondent extends React.Component<WithStyles<'root'>, State> {
    constructor(props: any){
        super(props);

        this.state = {
            open: false,
          }
    };

  handleClose = () => {
    this.setState({
      open: false,
    });
  };

  handleClick = () => {
    this.setState({
      open: true,
    });
  };

  render() {
    return (
      <div className={this.props.classes.root}>
        <Dialog open={this.state.open} onClose={this.handleClose}>
          <DialogTitle>Super Secret Password</DialogTitle>
          <DialogContent>
            <DialogContentText>1-2-3-4-5</DialogContentText>
          </DialogContent>
          <DialogActions>
            <Button color="primary" onClick={this.handleClose}>
              OK
            </Button>
          </DialogActions>
        </Dialog>
        <Typography variant="display1" gutterBottom>
          Material-UI
        </Typography>
        <Typography variant="subheading" gutterBottom>
          example project
        </Typography>
        <Button variant="raised" color="secondary" onClick={this.handleClick}>
          Super Secret Password
        </Button>
      </div>
    );
  }
}

export default withRoot(withStyles(styles)<{}>(Respondent));

这是我的withRoot装饰器：

import * as React from 'react';
import { MuiThemeProvider, createMuiTheme } from 'material-ui/styles';
import * as colors from 'material-ui/colors';
import CssBaseline from 'material-ui/CssBaseline';

// A theme with custom primary and secondary color.
// It's optional.
const theme = createMuiTheme({
  palette: {
    primary: colors.lightBlue,
    secondary: colors.blueGrey,
  },
});

function withRoot(Component: React.ComponentType) {
  function WithRoot(props: object) {
    // MuiThemeProvider makes the theme available down the React tree
    // thanks to React context.
    return (
      <MuiThemeProvider theme={theme}>
        <div>
            {/* CssBaseline kickstart an elegant, consistent, and simple baseline to build upon. */}
            <CssBaseline />
            <Component {...props} />
        </div>
      </MuiThemeProvider>
    );
  }

  return WithRoot;
}

export default withRoot;

withStyle decorator工作的另一个组件看起来几乎完全相同，我想我错过了一些显而易见但却无法看到的内容

Material-ui-next withStyles装饰器无法正常工作

0 个答案: