如何在反应中将道具传递给孩子？

Question

I'm trying to pass props to a children. Right now one of my components has a state and it's rendering other two components:

 const [state, setState] = useState({
    plantation: {
      points: [],
      finished: false
    },
    cultures: [
      {
        culture: "",
        points: []
      }
    ]
  });

 return (
    <MoveHive>
        <PlantationMap />
    </MoveHive>
  );

In MoveHive I render the <PlantationMap> as a children using props.children and it works great.

However I want to pass the state from the first component to <PlantationMap> . I tried to do like regular props:

 const [state, setState] = useState({
    plantation: {
      points: [],
      finished: false
    },
    cultures: [
      {
        culture: "",
        points: []
      }
    ]
  });

 return (
    <MoveHive>
        <PlantationMap state={state} setState={setState} />
    </MoveHive>
  );

But <PlantationMap> doesn't receive the props, const { state, setState } = props; , both return null.

How should I pass the props in this case?

I'm using Hooks, so no classes, just functions.

Thanks in advance

Answer 1

Your approach (using regular props) is correct.

As you can see from this sandbox , passing props does indeed work.

Off the top, two things may go wrong in your setup:

1. Your code has not been compiled so you are seeing stale output.
2. MoveHive component calls React.cloneElement on children and messes with its props.