How to delete an array attribute for all values in node js?-CodePudding

I want to return all users in JSON format except their passwords. To do so, I have done something like this

try {
        const rawResults = await model.find(querry).limit(limit).skip(startIndex)
        results.results = rawResults.forEach((v) => delete v.password)
    } catch (error) {
        results.error = error
    }

now when I am trying to console.log the result value, it always returns

{ next: null, results: undefined }

Please help me fix this issue. Thank you so much.

CodePudding user response：

Array.prototype.forEach returns undefined.

Just call rawResults.forEach((v) => delete v.password) without the results.results = and your code will work.

CodePudding user response：

forEach modifies the original object.

If you don't need rawResults any more (hopefully, as passwords should be encrypted as Nick pointed out), you can use your code as follows:

try {
    const rawResults = await model.find(querry).limit(limit).skip(startIndex)
    rawResults.forEach((v) => delete v.password)
    results.results = rawResults
} catch (error) {
    results.error = error
}

If you need separate RawResults and result objects you can use map instead of forEach:

try {
    const rawResults = await model.find(querry).limit(limit).skip(startIndex)
    results.results = rawResults.map(({password, ...v}) => v)
} catch (error) {
    results.error = error
}