in my DB the ratingsAverage‘s type is Number.
I want to implement filtering functionality depending on the ratings. for example, if the user selects 4, the result will be the ratings fall within the range of 4 to 4.9. selecting other ratings is possible too.

I’m struggling with the $or operator, it doesn’t return anything from the DB and I don’t know the reason, I’ve tried a lot but there is no chance.

I have a function called destructSearchParams which takes all the filter params, writes the query statement then passes the query into the API:

function destructSearchParams(searchParams) {
    let sortBy;

    if (searchParams.hasOwnProperty("sortBy")) {
      sortBy = searchParams.sortBy;
      delete searchParams.sortBy;
    }
  
    const filter = {};
    for (const [key, value] of Object.entries(searchParams)) {
      const valuesArray = value.split(',');
      let query;
      
      switch (key) {
        case "roaster":
          query = { $in: valuesArray};
          break;

        case "ratingsAverage":
          const ratings = valuesArray.map(value => {
            const minRating = Math.floor(Number(value));
            const maxRating = minRating + 1;
            return {ratingsAverage: { $gte: minRating, $lt: maxRating }};
          });
            query = {$or: ratings}
            console.log(query);
          break;

        default:
          query = { $regex: valuesArray.join('|')};  // Join with '|' to match any
          break;
      }
        
      filter[key] = query;
    }

    return {filter, sortBy};
}

the implementation of case "ratingsAverage" throws

CastError: Cast to number failed for value "[ { ratingsAverage: { '$gte': 4, '$lt': 5 } } ]" (type Array) at path "ratingsAverage"

stringValue: `"[ { ratingsAverage: { '$gte': 4, '$lt': 5 } } ]"`,
  messageFormat: undefined,
  kind: 'number',
  value: [ { ratingsAverage: [Object] } ],
  path: 'ratingsAverage',
  reason: null,
  valueType: 'Array'