How do I get access to data stored as a Promise[] in ES6 array? I am loading an array from the backend and each object has a url for the image. So in order to render the image I have to async/await fetch the images for each object. Instead of returning a Base64 image, I get I promise with the image embeded deep in the promise. I need a way to read the image data. See image below for return object structure.
Please note that i use axios in the background and NOT the Fetch API
Below are the functions and service methods used to load the list and then the images in 2 steps.
1.1 Axios service method
listAllItems() {
return axios.get(API_URL + "docman/items/list/all");
}
1.2 ReactJS main function
async componentDidMount() {
try {
const items = await DocmanService.listAllItems();
const itemsData = items.data;
const data = await itemsData.map(item => {
const image = this.loadImage(item.image);
return { ...item, image: image }
})
this.setState({ items: data });
} catch (e) {
console.log(e);
}
}
2.1 Axios images service method
loadImage = (url) => {
return axios.get(API_URL + url, { responseType: 'arraybuffer' });
}
2.2 ReactJS image loader function
async loadImage(imageUrl) {
try {
return await ImageService.loadImage(imageUrl)
} catch (e) {
return '';
}
}
3.1 Json list fetched from backend
[
{
"id": "1",
"uuid": "1c0a33af-4e78-4823-b84e-f3b5464db2af",
"identifier": "EN ISO 8402",
"title": "EN ISO 8402 Quality Management - Vocabulary",
"folder": "e347fef9-0a76-4e62-b7f2-c78e9f88355b",
"media": "FILE",
"path": "document/id/105",
"image": "image/id/106",
"format": "PDF",
"authors": "",
"publishers": "",
"created": "2020-09-22T14:56:31.316+00:00",
"published": null,
"version": "1994",
"status": null
},
{
"id": "2",
"uuid": "16a0e658-b444-4b60-bf18-ba2786d5fb00",
"identifier": "ISO 14001",
"title": "ISO 14001 Environmenatl Management Systems - Requirements with Guidance for Use",
"folder": "e347fef9-0a76-4e62-b7f2-c78e9f88355b",
"media": "FILE",
"path": "document/id/107",
"image": "image/id/108",
"format": "PDF",
"authors": "",
"publishers": "",
"created": "2020-09-22T14:56:31.659+00:00",
"published": null,
"version": "2004",
"status": null
},
-
-
]
