Right now, an API call is being made in a main component and the fetched data is saved in a Singleton.
This singleton data needs to be accessed by the getStaticPaths() function. However, due to the fact that getStaticPaths() pre-renders it, the singleton appears empty and returns a null object.
What is the best way to pass the paths data to getStaticPaths() so that it can dynamically receive the data or trigger the execution after a certain period of time?
To enhance clarity, it would be beneficial to include some code snippets and further elaborate on your objective. From my understanding, you are initiating an API call (possibly from getServerSideProps()) to retrieve data that will determine the page to render during build time through the getStaticPaths() method.
One potential solution could involve making the API call exclusively within the getStaticPaths() function. It is perplexing why the API call is being made from a different function when it is required in getStaticPaths(). Refer to the following approach from the official documentation -
// This function gets called at build time
export async function getStaticPaths() {
// Call an external API endpoint to get posts
const res = await fetch('https://.../posts')
const posts = await res.json()
// Determine the paths to pre-render based on posts
const paths = posts.map((post) => ({
params: { id: post.id },
}))
// Only these paths will be pre-rendered at build time.
// { fallback: false } implies other routes should 404.
return { paths, fallback: false }
}
This singleton data must be accessed by the getStaticPaths(), however, as getStaticPaths() pre-renders it, the singleton remains empty and returns a null object.
Given that getStaticPaths() is an asynchronous function, it will not result in an empty object since it awaits completion of the API request. Once the data is available, it can be utilized within your getStaticPaths() function according to your requirements.
How can I transmit the paths data to getStaticPaths() so that it dynamically receives the data or executes it after a specified period?
getStaticPaths() runs only once during the build process and cannot be invoked at will. While delaying its execution is possible, it may not align with your intended outcome.
The official documentation offers comprehensive insights, so I recommend exploring it for a deeper comprehension of these data-fetching techniques - https://nextjs.org/docs/basic-features/data-fetching
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