How to correctly pass callbacks and states to the Layout
so that they can be used elsewhere? When I share this as below, I have errors and a white screen:
class Menu extends Component {
constructor(props) {
super(props);
this.onSearchF = this.onSearchF.bind(this)
}
state = {
searchBlock: false,
};
onSearchF = (keyword) => {
const filtered = this.state.data.filter((entry) =>
Object.values(entry).some(
(val) => typeof val === "string" && val.toLowerCase().includes(keyword.toLowerCase())
)
);
};
render() {
return (
<div className="content">
<Routes>
<Route path="/" element={<Layout searchBlock={this.state.searchBlock} onSearch={()=>this.onSearchF()}/>}>
<Route
index
element={
<Home data={this.state.data} num={this.state.data.length} />
}
/>
</Route>
</Routes>
</div>
);
}
}
export default Menu;
Here I pass the callback to the Header
that I previously passed to the Layout
:
const Layout = () => {
return (
<>
<Header sblock={this.props.searchBlock} onS = {this.props.onSearch}/>
</>
);
};
export default Layout;
I want to use the callback here:
function Header() {
return (
<header className="header">
<button onClick={()=>console.log(this.props.sblock)}>button</button>
</header>
);
}
export default Header;
Your Layout
is a functional component, and you are trying to use this.props
in it; this is incorrect. Get the props
as part of arguments instead, like so:
import { Outlet } from "react-router-dom";
const Layout = ({searchBlock,onSearch}) => {
return (
<>
<Header sblock={searchBlock} onS={onSearch}/>
<Outlet/>
</>
);
};
export default Layout;
Layout
component isn't accepting any props. Layout
component isn't rendering an Outlet
for nested routes. It seems that Layout
only exists to render the Header
component. I'd suggest rendering Header
directly in the Main
component.
Example:
class Menu extends Component {
state = {
data: [],
searchBlock: false,
};
onSearch = (keyword) => {
const filtered = this.state.data.filter((entry) =>
Object.values(entry).some((val) =>
typeof val === "string"
&& val.toLowerCase().includes(keyword.toLowerCase())
)
);
... do something with filtered ...
};
render() {
const { data, searchBlock } = this.state;
return (
<div className="content">
<Header sblock={searchBlock} onS={this.onSearch} />
<Routes>
<Route
path="/"
element={<Home data={data} num={data.length} />}
/>
</Routes>
</div>
);
}
}
export default Menu;
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