Generating an array in the view and passing it into the controller - node.js

Question

It's a little strange but I cannot think of a better way to get it done.
First of all this is my code:
The router to get the view in the first place
router.get('/', function(req, res, next) {
Account.findOne(
{
_id: req.user._id,
},
function(err, acc) {
if (err) {
console.log(err);
}
// console.log(acc.websites);
res.render('reports/index', {
title: 'Reports!',
websites: acc.websites,
user: req.user,
});
}
);
});
The view:
<% include ./../partials/header.ejs %>
<h1 class="text-center">This is your report page</h1>
<form method="post">
<% for(let i=0; i<websites.length; i++){ let website = websites[i]; %>
<fieldset>
<label for="website<%=i%>" class="col-sm-2">Website <%=i+1%></label>
<input name="website<%=i%>" id="website<%=i%>" value="<%=website%>" type="text" />
</fieldset>
<% } %>
Generate report
</form>
<% include ./../partials/footer.ejs %>
The router, that's supposed to fire up after the on click.
router.get('/reports', function(req, res, next) {
if (req.user.isPremium == false) {
// Free user - Single report
var builtWithCall = `https://api.builtwith.com/free1/api.json?KEY=00000000-0000-0000-0000-000000000000&LOOKUP=${website}`;
let website = req.body.website0;
console.log(website);
}
});
How it works: The controller finds the account, grabs an array from inside of it, sends it to the view. The view prints it out and allows to make some changes to the values.
And now is where the problems begin. I need to gather the new values into an array and send it to the next router, which will then use them to call a bunch of APIs and print out the data. How do I gather the array and pass it to the controller? Also, should I use GET or POST?

Answer 1

With your logic, the name attribute will have the following form: name=website[0...n]. With that in mind, we can filter out the keys to gather all the website[n] into an array you seek:
const example = {
website0: 'example',
website1: 'example',
website2: 'example',
website3: 'example',
shouldBeIgnored: 'ignoreMe',
ignore: 'shouldIgnore'
}
const websites = Object.keys(example).filter(key => key.startsWith('website'))
console.log(websites)
So you're controller can be:
router.get('/reports', (req, res, next) => {
if (!req.user.isPremium) {
// Free user - Single report
const builtWithCall = `https://api.builtwith.com/free1/api.json?KEY=00000000-0000-0000-0000-000000000000&LOOKUP=${website}`;
const websites = Object.keys(req.body).filter(key => key.startsWith('website'));
console.log(websites);
}
});