Resolving Data Transfer Issues in Vue Router: Parent to Child Component with RouterView

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Why Can't I Pass Data from Parent to Child Component in Vue using RouterView?

Understanding the Problem

Example Scenario

Below, we provide a brief overview of the components involved in this issue:

In our scenario, the user submits data from Home which is supposed to be sent and received by the SelectionPage component. However, despite the data being fetched correctly, it does not propagate to the child component.

The Solution

To resolve the issue, it's essential to ensure that the routing and data submission processes are executed in a controlled manner. The problem arises primarily due to a race condition, where the routing to SelectionPage happens before the data is emitted to the parent component.

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2. Update the Submission Method

The method responsible for handling the user data submission must also be adjusted to ensure that the routing logic occurs after the data is emitted:

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The corresponding method should correctly update the local data state:

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Lastly, the child component should be structured to receive the data through props:

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In the template, you can dynamically display the received data as follows:

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Conclusion

Passing data between parent and child components in Vue using RouterView can be tricky, but understanding the asynchronous nature of JavaScript and the Vue framework's component lifecycle is key to successful data management. By implementing the solution outlined above, you can ensure that your data flows smoothly from the parent component to child components without getting caught in race conditions.