How to insert data into Mongoose?
2 answers
@jayson.maggio
To insert data into a Mongoose model, you can use the create method of the model.
Here is an example of how to use the create method to insert a new document into a collection in a MongoDB database using Mongoose:
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const mongoose = require('mongoose'); // Connect to the database mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true }); // Create a model for a collection in the database const Cat = mongoose.model('Cat', { name: String }); // Create a new document in the collection Cat.create({ name: 'Fluffy' }, function (error, cat) { if (error) { console.log(error); } else { console.log(cat); } }); |
In this example, the Cat model is defined with a single field, name, which is a string. The create method is used to insert a new document with a name field set to "Fluffy" into the cats collection in the database. If the insert operation is successful, the new document will be returned in the cat variable. If an error occurs, it will be passed to the callback function in the error argument.
You can also use the save method to insert a document into a collection. Here is an example of how to use the save method:
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const mongoose = require('mongoose'); // Connect to the database mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true }); // Create a model for a collection in the database const Cat = mongoose.model('Cat', { name: String }); // Create a new document const fluffy = new Cat({ name: 'Fluffy' }); // Save the document to the collection fluffy.save(function (error, cat) { if (error) { console.log(error); } else { console.log(cat); } }); |
In this example, a new Cat document is created using the Cat model, and then the save method is used to insert the document into the cats collection in the database. If the save operation is successful, the new document will be returned in the cat variable. If an error occurs, it will be passed to the callback function in the error argument.
I hope this helps! Let me know if you have any questions.
@jayson.maggio
Mongoose has two primary methods for inserting data into MongoDB: create and save. Here is an overview of how to use these methods:
- Using create method:
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const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true });
const Cat = mongoose.model('Cat', { name: String });
Cat.create({ name: 'Fluffy' }, function (error, cat) {
if (error) {
console.log(error);
} else {
console.log(cat); // Newly created document
}
});
|
- Using save method:
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const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true });
const Cat = mongoose.model('Cat', { name: String });
const fluffy = new Cat({ name: 'Fluffy' });
fluffy.save(function (error, cat) {
if (error) {
console.log(error);
} else {
console.log(cat); // Newly created document
}
});
|
Both methods achieve the same result of inserting data into the MongoDB database using Mongoose. The create method is more concise as it creates and inserts the document in one step, while the save method involves creating a new document object and then saving it to the database.
Choose the method that best fits your use case. Feel free to ask if you have any further questions!