Search for Specific Records in Mongo DB - node.js

Question

I am trying to fetch data from my course model where I have some data related to courses from MongoDB database. I want to implement a search mechanism so that only those documents should be fetched which are typed in the search bar.
Following is the server side code :
I am successful getting the key but unable to get valid records. Everytime I perform search operation I get all the records. Please Help.
export const searchCourses = async (req, res) => {
try {
console.log('SEARCH COURSES ==>');
const { key } = req.params;
console.log(key)
const courses = await Course.find({
$or: [
{
title: { $regex: key, $options: 'i'}
},
{
description:{
$regex: key, $options:'$i'
}
}
]
},
)
.populate('instructor', '_id name')
.exec()
console.log(courses)
res.json(courses)
} catch (err) {
console.log(err);
res.sendStatus(404);
}
};

Answer 1

I don't understand the question 100%, but to my understanding you are trying to filter results by a text input from the user? In that case you should use a useState, and send that to the server as a query. Here is a short example:
Client code:
const Context = React.createContect({
async listData(query) {
return await fetch("/api/search?" + new URLSearchParams(query));
};
});
function SearchData(){
const {listData} = useContext(Context);
const [data, setData] = useState();
const [dataQuery, setDataQuery] = useState();
const { res } = async () => listGroups({ data }), [data]);
<input onChange={(e) => setDataQuery(e.target.value)} />
<button onClick={() => setData(dataQuery)} />
}
And server code:
router.get("/api/search", async (req, res) => {
const [ data ] = req.query;
const filter = {};
if(data){
filter.data = {$in: [data]};
}
const db = await database.collection(collection).find(filter)
.map(({info} => ({info}))
.toArray()
res.json(db);
});
Not sure if this code exactly will work, but most of the functions are copied from own code, which works.