Undefined error when trying to map child objects in React - arrays

Question

I'm trying to get image url for nested JSON object.
Tried {post.image.url} but I get an error saying url undefined
I appreciate any help or guidance that could be offered. New to Javascript / React but after an hour of Googling and searching couldn't come up with a solution for this. Must be missing something simple :-P
Here's my code...
export const getAllPosts = async () => {
return await fetch(
`https://notion-api.splitbee.io/v1/table/${NOTION_BLOG_ID}`
).then((res) => res.json());
}
export async function getStaticProps() {
const posts = await getAllPosts()
return {
props: {
posts
},
};
}
function Blog({ posts }) {
return (
<div>
{posts.map((post) => (
<Link href="/blog/[slug]" as={`/blog/${post.slug}`}>
<div>
<div className='text-6xl'>{post.title}</div>
<img className='w-24' src={post.imgUrl}></img>
{/*{post.image.rawUrl}*/}
</div>
</Link>
))}
</div>
);
}
export default Blog
Here's the JSON...
[
{
"id": "90ee0723-aeb5-4d64-a970-332aa8f819f6",
"slug": "first-post",
"date": "2020-04-21",
"Related to Notion API Worker (Column)": [
"0976bfa6-392a-40b0-8415-94a006dba8d9"
],
"imgUrl": "https://www.notion.so/image/https:%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F689883de-2434-4be3-8179-a8ba62a7bc1e%2Fsnowmountain.jpg?table=block&id=90ee0723-aeb5-4d64-a970-332aa8f819f6&cache=v2",
"image": [
{
"name": "snowmountain.jpg",
"url": "https://www.notion.so/image/https:%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F689883de-2434-4be3-8179-a8ba62a7bc1e%2Fsnowmountain.jpg?table=block&id=90ee0723-aeb5-4d64-a970-332aa8f819f6&cache=v2",
"rawUrl": "https://s3-us-west-2.amazonaws.com/secure.notion-static.com/689883de-2434-4be3-8179-a8ba62a7bc1e/snowmountain.jpg"
}
],
"title": "My first blogpost bruce"
}
]

Answer 1

The image property of a post is an array as denoted by the bracket on the end of line 1:
1. "image": [
2. {
3. "name": "snowmountain.jpg",
4. "url": "https://www.notion.so/image/https:%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F689883de-2434-4be3-8179-a8ba62a7bc1e%2Fsnowmountain.jpg?table=block&id=90ee0723-aeb5-4d64-a970-332aa8f819f6&cache=v2",
5. "rawUrl": "https://s3-us-west-2.amazonaws.com/secure.notion-static.com/689883de-2434-4be3-8179-a8ba62a7bc1e/snowmountain.jpg"
6. }
7. ],
If you know that there will always be exactly one image you could access it directly by referencing the first array item.
function Blog({ posts }) {
return (
<div>
{posts.map((post) => (
<Link href="/blog/[slug]" as={`/blog/${post.slug}`}>
<div>
<div className='text-6xl'>{post.title}</div>
<img className='w-24' src={post.imgUrl}></img>
{post.image && post.image[0].rawUrl}
</div>
</Link>
))}
</div>
);
}
Note that this could err if the array is undefined / null or if it's empty, so you should probably safe-guard it by only displaying something if it exists.

Answer 2

There is no need to call then() method, if you use async\await.
As mdn says:
await can be put in front of any async promise-based function to pause
your code on that line until the promise fulfills, then return the
resulting value.
export const getAllPosts = async () => {
return await fetch(
`https://notion-api.splitbee.io/v1/table/${NOTION_BLOG_ID}`
);
}
export async function getStaticProps() {
const posts = await getAllPosts()
return {
props: {
posts
},
};
}