Probably the question is a little bit silly, but I came across a simple doubt that is actually taking my mind hostage. :)
I need to recover several objects from the database (in mongo), and then, while sending them to an API server, changing a single property to them, to be sure to put the records in the right status so as soon as I get back a response (that is sent to me on another endpoint, asynchronously). Right now I'm doing this like this:
const SomeModel = mongoose.model('SomeModel');
const items = await SomeModel.find({ someField: 'someValue' });
const promises = items.map(async (item) => {
await sendItem(item);
item.status = 'SENT';
await item.save();
});
await Promise.all(promises);
But as you can see, I'm doing some not-good side-effect on that function: I'm actually manipulating an object that is coming in the function parameters... but how can I achieve the same goal without that, and also without having to do a separate query for each item?
thank you for you kind response, Giacomo.
const SomeModel = mongoose.model('SomeModel');
const items = await SomeModel.find({ someField: 'someValue' });
const bulkWriteBody = items.map((item)=>{
return {
updateOne: {
filter: { _id: item._id },
update: { $set: {
status: 'SENT,
} }
},
};
})
await SomeModel.bulkWrite(bulkWriteBody);
with this you do only one promise to update all sent item and you don't need to manual update it.