Batch update with Mongoose

Question

Batch update with Mongoose

I'm pulling data from a RETS(XML) feed and saving it in a local MongoDB using node and mongoose.

Periodically I need to update the documents and delete the inactive ones as well as add new ones. Rather than making multiple queries to Mongo or the RETS server, I was pulling both and looping through the data.

This works fine but is there a way to save the Mongoose results back to the database with updates and inserts? Or do I need to find each document and update it individually?

node.js
mongodb
mongoose

Answer 1

To update multiple documents (not just one) on MongoDB using Mongoose you can use the multi option:

Model.update({ 
       field_that_matches_many_docs: ninja_variable 
      }, { 
        $set: { size: 'large' }
      }, { 
        multi: true 
      }, callback);

See more on in the Mongoose documentation for updating documents and here