CODEWITHSUNDEEP
mongodbaggregatenestjs
Piotr Sikora
Piotr Sikora

Reputation: 1

Replacement for $Set in mongoDB

Hello I have small problem with my call to mongoDB. Im using $set functionality on my localhost, and it works super fine, yet after using it on production enviroment we getting error because mongoDB version is 4.0, we cannot upgrade Database so my question, is there ANY replacement for $Set in version 4.0? can I use anything to achive same call?

Call to mongo:

const templateList = await this.templatesModel.aggregate([
      {
        $facet: {
          data: [
            {
              $lookup:
              {
                from: 'extensions',
                localField: 'extensionName',
                foreignField: 'extension',
                as: 'extension',
              },
            },
            { $unwind: '$extension' },
            { $set: { bundleIds: '$extension.bundle' } },
            { $match: filter },
            { $skip: offset },
            { $limit: limit },
            {
              $project: {
                extensionName: 1,
                isDefault: 1,
                previewImage: 1,
                published: 1,
                title: 1,
                updated: 1,
              },
            },
          ],
          totalCount: [
            {
              $lookup:
              {
                from: 'extensions',
                localField: 'extensionName',
                foreignField: 'extension',
                as: 'extension',
              },
            },
            { $unwind: '$extension' },
            { $set: { bundleIds: '$extension.bundle' } },
            { $match: filter },
            { $count: 'count' },
          ],
        },
      },
    ]).exec();

Upvotes: 0

Views: 150

Answers (1)

hhharsha36
hhharsha36

Reputation: 3349

You can replace $set with $addFields.

Both these stages perform the same task since $set is nothing but an alias of $addFields.

Upvotes: 2

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