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Discover how to implement multiple parameters in `React Router`. Learn the differences between path parameters and query parameters for seamless navigation in your React application.
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This video is based on the question https://stackoverflow.com/q/63106388/ asked by the user 'Thomas Rositsky' ( https://stackoverflow.com/u/12253131/ ) and on the answer https://stackoverflow.com/a/63106559/ provided by the user 'Mario Petrovic' ( https://stackoverflow.com/u/3955557/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding React Router with Multiple Parameters

In the world of web development, routing plays a crucial role in ensuring users experience seamless navigation between different components of an application. When working with React Router, developers often grapple with how to define routes that can handle multiple parameters. In this guide, we'll address a common scenario: setting up routes with multiple parameters for a movie application. If you've ever been puzzled about how to structure your routes—such as when transitioning from viewing movies to viewing details about a specific actor—this guide is for you!

The Problem

Imagine you have a page with the route /movies?categoryId=21213, where you display movies based on a specific category. Within this page, you have a section that lists actors. When a user clicks on an actor, you want to redirect them to a new route that looks like /movies?categoryId=21213/actor?actorId=234324234. However, the challenge lies in ensuring that your routing set up correctly captures the necessary parameters for both the movie category and the actor ID.

One user attempted to implement this with the following code:

[[See Video to Reveal this Text or Code Snippet]]

Unfortunately, this approach didn't work, leading to some confusion regarding how to properly set up routing with multiple parameters.

The Solution

There are two primary methods to handle this routing scenario effectively: using path parameters or query parameters. Let's explore both options to understand their applications and implications.

Using Path Parameters

Path parameters are segments of a URL that are dynamic and can change based on the input. They are a good choice when you want to structure your route to reflect the hierarchy of resources.

To set up a route using path parameters for this scenario, you would write:

[[See Video to Reveal this Text or Code Snippet]]

In this case, the route would accept URLs that follow the pattern, such as /movies/21213/234324234, where 21213 represents categoryId and 234324234 represents actorId.

Pros of Using Path Parameters

The URL structure is clean and intuitive.

Indicates a direct relationship between resources.

Using Query Parameters

Alternatively, you can use query parameters, which are part of the URL query string and can be easily appended to the route. For this, you would set up your route like this:

[[See Video to Reveal this Text or Code Snippet]]

With query parameters, the URL would look like /movies?categoryId=21213&actorId=234324234.

Pros of Using Query Parameters

More flexible for handling optional parameters.

Often easier to manage within a component since parameters can be accessed via hooks like useLocation or useParams.

Choosing the Right Approach

Both methods have their merits, but the choice ultimately depends on your application's structure and requirements. If you prioritize a straightforward, resource-driven URL architecture, go with path parameters. However, if your app involves many optional fields or parameters that change frequently, query parameters might be the better choice.

In terms of user experience, many developers lean towards using query parameters, as they provide ease of management while keeping routes uncomplicated. However, a well-structured hierarchy using path parameters can clarify relationships between resources.

Final Thoughts

From the example we explored, note that the original code snippet contained an improperly structured route. Remember, when defining path parameters in your routes, you do not need a ?. Instead, use the correct syntax to help ensure that your routes are functional and effective.

By understanding and implementing the dist