Utilizing MongoDB queries with changing field identifiers

My goal is to accomplish the following:

async fetchTrack(id, type: String) : Promise<Track[]> {
const query = this.trackModel.find(
    { type : id },
    {_id:0}
).limit(100);
return query;
}

I am attempting to dynamically replace the property "type" with the string provided in the function at runtime within the query. Any suggestions on how I can achieve this?

I have already researched online and attempted to cast it, but without success.

Answer №1

It appears that you are looking for:

async fetchTrackData(id, category: String) : Promise<Track[]> {
const queryResult = await this.trackModel.find( // using `await` to ensure data is fetched before returning
    {}, // retrieve all records
    {category: "$_id", _id:0} // map `_id` to `category`, exclude `_id`
).limit(100); // fetch only 100 documents
return queryResult;
}

You can also directly return the query results like this: return this.trackModel.find(...

To see a demonstration, check out the example on the playground page

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