Mutating Context with Hooks

There are multiple ways in which you can get data conditionally from the Context; one of these is placing the data from the Context in the local state. That could be a solution for a smaller application, but can be inefficient for larger applications, as you'd still need to pass this state down your component tree. Another solution is to use React Hooks to create a function that is added to the value of your Context and can be invoked from any of the components that are nested in this Context. Also, this method of getting the data lets you efficiently load only the data that you'd need.

How this can be used together with React life cycles and state management using Hooks is demonstrated in the first part of this section.

Using life cycles in functional components

Previously, we used the useDataFetching Hook to do the data fetching for us, but this doesn't let us control when the data will be fetched exactly. From the components that...