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In MongoDB v3.4, views were added as a feature. However, I haven't been able to find any resources for how'd I'd use a view I created in a Node.js application. How would I go about doing this, specifically for an aggregation view?
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To connect a Node. js application to MongoDB, we have to use a library called Mongoose. mongoose. connect("mongodb://localhost:27017/collectionName", { useNewUrlParser: true, useUnifiedTopology: true });
MongoDB provides two different view types: standard views and on-demand materialized views. Both view types return the results from an aggregation pipeline. Standard views are computed when you read the view, and are not stored to disk. On-demand materialized views are stored on and read from disk.
I also found this to be unclear. Confusingly, you need to use db.createCollection, unlike the createView command in the MongoDB shell. For example:
db.createCollection('myView', {
viewOn: 'myCollection',
pipeline: [],
});
Where pipeline is an Aggregation Pipeline. You can then access your View in the same way as a collection:
db.collection('myView').find();
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