AI Features

Using Props With Context

Continue refactoring React code with contexts in this lesson.

Row component

The Row component is no longer tracking the state of its seats so it can be much simpler:

import * as React from "react"
import Seat from "../components/seat"
import { IsVenueContext, VenueContext } from "./app"
interface RowProps {
rowNumber: number
}
const Row = ({ rowNumber }: RowProps) => {
const context = React.useContext<IsVenueContext>(VenueContext)
const seatItems = Array.from(Array(context.state.seatsInRow).keys()).map(
seatNumber => {
return (
<Seat
key={seatNumber + 1}
seatNumber={seatNumber + 1}
rowNumber={rowNumber + 1}
/>
)
}
)
return <tr>{seatItems}</tr>
}
export default Row

Note that we haven’t totally abandoned the use of props—the row number of each individual row isn’t a part of the global state, so we pass it to that row as a prop. Similarly, the Seat component will get its row and seat number as props.

Seat component

The Seat component takes on all the application logic for seat status, and so it picks up ...