Working with action data

The loader and action functions contain most of the business logic of our Remix application. This is where we fetch, filter, and update data. Both functions must return a Response object. You know about the redirect and json helper functions, which let us create specific Response objects, and you have already practiced working with loader data. In this section, we will learn how to work with action data. For that, we will update the expense details view and implement an edit expense form:

1. Open the dashboard.expenses.$id.tsx route module in your editor.
2. Take the current code from dashboard.expenses._index.tsx. Can you modify the code to edit an existing expense? Give it a try!

   The final code for this chapter is available in the /bee-rich/solution folder on GitHub for this chapter. As we move forward, we'll help you align your work with this final solution.

3. Make sure to update the form's action property using the expense object from the...