MUI v5：失败的道具类型：`Grid` 的道具`direction` 只能与`container` 道具一起使用

Question

I'm styling a MUI v5 Grid as follows:

const SettingsGrid = styled(Grid)(({ theme }) => ({
    width: `calc(100% - calc(${Number(theme.spacing(2))} * 2))`,
    margin: theme.spacing(2),

    '& .MuiCard-root + .MuiTypography-subtitle1': {
        marginTop: theme.spacing(4),
    },
}))

Then, I'm using it as follows:

<Box m={1} overflow="auto">
  <SettingsGrid
      container
      direction="row"
      justifyContent="center"
  >
      <Grid
          direction="column"
          style={{ minWidth: '35em', maxWidth: '60em' }}
      >
          <!-- ... -->
      </Grid>
    </SettingsGrid>
</Box>

This now throws this console warning at runtime:

Failed prop type: The prop `direction` of `Grid` can only be used together with the `container` prop.

I've tried with container={true} but this doesn't help. It seems as if the container property gets lost in styled() . How can I fix this? I'm at a loss.

EDITH: https://codesandbox.io/s/gritty-styled-grid-7l04g

Answer 1

The direction prop of your Grid is only valid if the container prop is set to true , so add the missing container prop in your inner Grid . Internally, a container Grid has the display set to flex , and the direction is mapped to flex-direction , flex-direction is meaningless if the layout is not flex:

<Grid container direction='column'

Answer 2

Just to add to what NearHuscarl has mentioned, this is the place where you are missing the container prop.

<Box m={1} overflow="auto">
  <SettingsGrid
      container
      direction="row"
      justifyContent="center"
  >
      <Grid
          container  <<<------------------ you are missing this 
          direction="column"
          style={{ minWidth: '35em', maxWidth: '60em' }}
      >
          <!-- ... -->
      </Grid>
    </SettingsGrid>
</Box>