Addressing the problem of refactoring in JavaScript when associating arguments with keys in MongoDB

Question

Addressing the problem of refactoring in JavaScript when associating arguments with keys in MongoDB

I am facing a dilemma with two functions that are almost identical except for the value being set as indicated:

            function extracted_start(details, txt) {
                return FutureTasks.upsert({
                        number: details.number,
                        start_date: details.start_date,
                        end_date: details.end_date
                    }, {
                        $set: {
                            access_rights: txt,
                        }
                    },
                );
            }

            function extracted_end(details, txt) {
                return FutureTasks.upsert({
                        number: details.number,
                        start_date: details.start_date,
                        end_date: details.end_date
                    }, {
                        $set: {
                            returned_status: txt,
                        }
                    },
                );
            }

When attempting to refactor using a generic function as shown below, I encounter an issue with 'key' not being recognized. What could be the problem?

            function extracted_generic(details, key, txt) {
                return FutureTasks.upsert({
                        number: details.number,
                        start_date: details.start_date,
                        end_date: details.end_date
                    }, {
                        $set: {
                            key: txt,
                        }
                    },
                );
            }

javascript mongodb

Answer 1

Answer №1

Instead of using the key as a literal value, you need to assign it as a variable within an object. This can be achieved by creating an object and manually adding the key-value pair with obj[key] = txt. (As a side note, there is a misspelling of 'generic' in your function name.)

function extracted_generic(details, key, txt) {
  var obj = {},
      obj[key] = txt;

  return FutureTasks.upsert({
    number: details.number,
    start_date: details.start_date,
    end_date: details.end_date,
  }, {
    $set: obj
  });
}

Answer 2

Instead of using the key as a literal value, you need to assign it as a variable within an object. This can be achieved by creating an object and manually adding the key-value pair with obj[key] = txt. (As a side note, there is a misspelling of 'generic' in your function name.)

function extracted_generic(details, key, txt) {
  var obj = {},
      obj[key] = txt;

  return FutureTasks.upsert({
    number: details.number,
    start_date: details.start_date,
    end_date: details.end_date,
  }, {
    $set: obj
  });
}

Answer 3

Answer №2

When the variable key is being considered as the actual word "key", it is best to create your object first and then utilize it in this way:

let newObj = {};
newObj[key] = text;
..
..
$set: newObj

Answer 4

When the variable key is being considered as the actual word "key", it is best to create your object first and then utilize it in this way:

let newObj = {};
newObj[key] = text;
..
..
$set: newObj

Addressing the problem of refactoring in JavaScript when associating arguments with keys in MongoDB

Answer №1

Answer №2

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