The deleteMany() Function in Mongoose
Nov 5, 2021
The deleteMany() function is how you can delete multiple documents from a collection using Mongoose.
It takes up to two parameters:
- condition, what a document should contain to be eligible for deletion. You can omit this property to delete all documents in the model.
- options, other configurable parameters, like
sessionorwriteConcern.
const testSchema = new mongoose.Schema({
name: String
});
const Test = mongoose.model('Test', testSchema);
await Test.create({name: 'Test Testerson'});
await Test.create({name: 'Test Testerson'});
await Test.create({name: 'Test Testerson'});
await Test.create({name: 'Masteringjs'});
await Test.create({name: 'MeanIT'});
await Test.deleteMany({name: 'Test Testerson'});
await Test.find(); // will return Masteringjs and MeanIT documentsReturn Value
Once the documents are deleted, it will return an object with a property, deletedCount, containing the number of documents deleted.
const testSchema = new mongoose.Schema({
name: String
});
const Test = mongoose.model('Test', testSchema);
await Test.create({name: 'Test Testerson'});
await Test.create({name: 'Test Testerson'});
await Test.create({name: 'Test Testerson'});
await Test.create({name: 'Masteringjs'});
await Test.create({name: 'MeanIT'});
await Test.deleteMany({name: 'Test Testerson'}); // {deletedCount: 3}
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