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Tolerim
a month ago

Does the 'isPreviewing' prop fail to update within the child component?

The following is a request for help with an issue related to the Elementviewer component in a TextEditor module that I'm building. Despite my efforts to debug and seek help from other sources, I am unable to update the isPreviewing prop when the TextEditor component's state changes. While my code, including TextEditor.js and ElementViewer.js files, is provided, I need assistance in identifying why this issue persists.
Answers(2)
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Vogi
a month ago
Verified Answer
I understand that you are having trouble updating the isPreviewing prop when the TextEditor component's state changes. Updating props in React can be done in several ways. One way is to use the rerender function from the React Testing Library. Another way is to pass the props as dependencies to the useEffect hook. However, I would need more information about your code and the issue you are facing to provide a more specific solution. Can you please provide more details about your code and the issue you are facing?

Sources

Update Props of Render Component in React Testing LibraryUpdating state when props change in React | bobbyhadzUpdate Props | Testing LibraryCan I update a component's props in React.js? - Stack OverflowHow to update a component’s prop in ReactJS - FreeCodecampHow to update props correctly in React functional component
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Tolerim
a month ago
The issue with the isPreviewing prop not updating when the state of TextEditor changes might be caused by the fact that the useEffect hook that is responsible for updating the sendDataToParent state is not triggered when the isPreviewing prop changes. To fix this, we need to add the props.isPreviewing to the useEffect hook's dependency array so that it updates the sendDataToParent state whenever props.isPreviewing changes. Here's an updated version of the useEffect hook: 
useEffect(() => {
    console.log("updating is previewing prop");
    setSendDataToParent(props.isPreviewing);
}, [props.isPreviewing, setSendDataToParent]);
Also, the sendDataToTextEditor function in ElementViewer component should only be called when the sendDataToParent state is true to ensure that the data is only sent to the TextEditor component during preview mode. 
const sendDataToTextEditor = () => {
    if (sendDataToParent) {
        const dataArray = [elementIndex, tag, content];
        props.sendForPreview(dataArray);
        console.log("sending data to the text editor");
    }
}

useEffect(() => {
    sendDataToTextEditor();
}, [sendDataToParent]);
;