Is it possible to use $and in combination with some dynamic values when using the find method?
For example:
let { city, zanr, date } = req.body;
const selectedEvent = await Events.find({
$and: [{ address: city}, { type: zanr }, { date: datum }],
});
In some cases, the value "all" might be present in req.body, indicating that no filtering is needed.
Occasionally, the address field may need to be set to "any".
In the case where city is entirely removed, delete {address:city} from the and array
or substitute it with {address:{$regex:'.*.'}}
let { city, genre, date } = req.body;
const selectedEvent = await Events.find({
$and: [ {address:{$regex:'.*.'}},{ type: genre }, { date: datum }],
});
Using javascript, you have the ability to dynamically create queries based on the data in req.body.
These queries in MQL format are essentially JSON objects that can be generated and modified as needed.
Here is an example:
var q;
if(city=="all") q=[{ type: zanr }, { date: datum }];
else q=[{ address: city}, { type: zanr }, { date: datum }];
const selectedEvent= await Events.find({$and: q});
If you have additional filters besides the city, you can apply the same dynamic query generation logic for those as well.
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