Sort through the data that is already populated and proceed to paginate within Mongodb

Question

Sort through the data that is already populated and proceed to paginate within Mongodb

Hey there, I'm currently working on populating some data and then implementing pagination for that data. Take a look at this example:

Schema A (Users)

{
  name: 'Demo',
  postId: 'someObjectId',
}

Schema B (Posts)

{
  id: 'someObjectId',
  postName: 'Post 1',
  date: 'date of creation'
}

Let me show you the code snippet:

const users = UserModel.find({
  name: 'Demo'
}).populate({
   path: 'postId',
   select: 'date',
   match: {'postId.date' : {$lt: 'today'}}
}).page(pagination).limit(20)

I'm not getting the desired result. Can anyone help me figure out what's wrong?

NOTE: This is just an overview. It doesn't contain actual JavaScript code. I am aware that I haven't included proper JavaScript syntax.

javascript mongodb mongoose

Answer 1

Answer №1

When populating data, it is important to consider the following:

Post.find({})
.populate([
    // The array here is used for storing information temporarily.
    // This is helpful when multiple things need to be populated.
    {
        path: 'user',
        select: 'name',
        model:'User',
        options: {
            sort:{ },
            skip: 5,
            limit : 10
        },
        match:{
            // Filtering results in case of multiple matches while populating.
            // This may not be applicable in this specific scenario.
        }
    }
]);
.exec((err, results)=>{
   console.log(err, results)
});

Answer 2

When populating data, it is important to consider the following:

Post.find({})
.populate([
    // The array here is used for storing information temporarily.
    // This is helpful when multiple things need to be populated.
    {
        path: 'user',
        select: 'name',
        model:'User',
        options: {
            sort:{ },
            skip: 5,
            limit : 10
        },
        match:{
            // Filtering results in case of multiple matches while populating.
            // This may not be applicable in this specific scenario.
        }
    }
]);
.exec((err, results)=>{
   console.log(err, results)
});

Sort through the data that is already populated and proceed to paginate within Mongodb

Answer №1

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