Custom layout in SimpleForm component on react-admin - reactjs

Question

I want to create a custom two-column-grid layout on my react-admin project on Edit and Show pages. I want to display selectboxes and the imageupload area on the left column, and the text inputs on the right column by using only one <SimpleForm>.
Simply like this
If I use a div or a <Card> component under <SimpleForm> and <EditController> components, I receive an error.
Warning: React does not recognize the `basePath` prop on a DOM element.
If you intentionally want it to appear in the DOM as a custom
attribute, spell it as lowercase `basepath` instead. If you
accidentally passed it from a parent component, remove it from the DOM
element.
Is there any way to create a layout without this error?

Answer 1

I solved it with creating another component with using divs, <Grid/> etc, and used that component in <SimpleForm> component.
import {withStyles} from '#material-ui/core/styles';
import React from 'react';
import {
EditController,
SimpleForm,
TextInput,
SelectInput,
Title,
} from 'react-admin';
import Grid from '#material-ui/core/Grid';
import Card from '#material-ui/core/Card';
import Poster from "../customField/Poster";
import {EditToolbar} from '../toolbar/CustomToolbar'
import {EditActions} from '../toolbar/CustomActions'
const editStyles = {
root: {display: 'flex', alignItems: 'flex-start', width: '100%'},
form: {flexGrow: 9},
};
class CardEdit extends React.Component {
constructor(props) {
super(props);
this.state = {
refresh: false
};
}
render() {
const FormDiv = withStyles(editStyles)(({children, classes, ...props}) => {
return (
<div className={classes.root}>
<div className={classes.form}>
<Grid container spacing={24}>
<Grid item xs={6}>
<TextInput source="name" fullWidth />
</Grid>
<Grid item xs={6}>
<TextInput source="card_id" fullWidth />
</Grid>
</Grid>
</div>
</div>
)
}
)
return (
<EditController {...this.props}>
{({resource, record, redirect, save, basePath, version}) => {
return (
<div>
<Title defaultTitle="sample"/>
<Card>
<div style={{ margin: '20px 20px 0 0' }}>
<EditActions
basePath={basePath}
resource={resource}
data={record}
hasShow
hasList
/>
</div>
{record && (
<SimpleForm
basePath={basePath}
redirect={redirect}
resource={resource}
record={record}
save={save}
version={version}
toolbar={<EditToolbar/>}
>
<FormDiv record={record} />
</SimpleForm>
)}
</Card>
</div>
)
}}
</EditController>
)
}
}
export default withStyles(editStyles)(CardEdit);

Answer 2

Actually, this could be done a little bit easier in case you don't need any custom styles and what not.
In order to get rid of the basePath error, just sanitize the props passed to the Material UI Grid Component:
const SanitizedGrid = ({basePath, ...props}) => {
return (
<Grid {...props} />
);
};
Then use it in place of a normal Grid:
export default props => (
<SimpleForm {...props}>
<SanitizedGrid container spacing={16}>
<Grid item xs>
<TextInput source="name" />
</Grid>
</SanitizedGrid>
</SimpleForm>
);

Answer 3

As another way, I've just worked out (thanks to Alexander's answer) a nice generic way to add any custom HTML content to a react-admin form:
import React, { Fragment } from 'react';
import { SimpleForm } from 'react-admin';
const CustomContent = ({ basePath, record, resource, children }) => (
<Fragment>
{children}
</Fragment>
);
export const MyForm = (props) => (
<SimpleForm>
<CustomContent>
<h3>Custom Content</h3>
<p>I can now add standard HTML to my react admin forms!</p>
</customContent>
</SimpleForm>
);
You get the basePath prop (which you probably don't want), but the record and resource props might be useful to your custom content (if you switch the code to use a render prop)