I have the React component with schematic code:
class OrderList extends Component {
constructor() {
super();
this.handleUpdate = this.handleUpdate.bind(this);
}
handleChange(event) {
//>>POI how to get reference to the Grid, that is defined in the component tree?
//grid.forceUpdate();
}
render() {
return (
<div>
<Grid data={this.props.orders}>
<button onClick={this.handleUpdate}>Update</button>
</div>
);
}
}
<Grid>
is some complex React component like https://devexpress.github.io/devextreme-reactive/react/grid/ or https://www.ag-grid.com/react-getting-started/ and its appearcance depends on some state variable. <Grid>
is re-rendered automatically (eg its final, computed (by React) style is updated) if this.props.orders
is updated. But I have this.state.selectedOrderNo
variable which does not belong to the this.props.orders
(of course, these are 2 different variables - array of props and scalar of state) and Grid has some styling rules that depend on this.state.selectedOrderNo
but those styling rules are computed/rendered only when the <Grid>
is rerendered (but this re-rendering does not happen when this.state.selectedOrderNo
changes, because those styling rules are some deeper options than the direct parameters of the <Grid>
) but I would like to initiate this re-rendering of the Grid when this.state.selectedOrderNo
is changed. So, that is why I am trying to call grid.forceUpdate()
. But the question is - how can I get reference grid
to the <Grid component>
?
You need to use ref
in Grid to make it work
class OrderList extends Component {
constructor() {
super();
this.handleUpdate = this.handleUpdate.bind(this);
}
handleChange(event) {
//>>POI how to get reference to the Grid, that is defined in the component tree?
//grid.forceUpdate();
this.grid.forceUpdate();
}
render() {
return (
<div>
<Grid ref={ref=>this.grid=ref} data={this.props.orders}>
<button onClick={this.handleUpdate}>Update</button>
</div>
);
}
}
Hope it helps
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