How can I make a get_or_create
function in Meteor (something like https://docs.djangoproject.com/en/1.8/ref/models/querysets/#get-or-create )?
Do I have to use
var element = Elements.findOne({number: 32});
if (element) {
var elementId = element._id;
} else {
// override element
element = Elements.insert({number: 32});
var elementId = element._id;
}
// do something with elementId
It seems not so handy.
I wondered if Meteor or MongoDB has something already built-in just like Collection.upsert()
.
Checkout MongoDB findAndModify
. Below is an example to achieve what you are describing.
collection.findAndModify({
query: { _id: "someId" },
update: {
$setOnInsert: { foo: "bar" }
},
new: true, // return new doc if one is upserted
upsert: true // insert document if it does not exist
})
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