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Mongoose
The Mongoose data source allows importing collections from a Mongoose instance.
To make everything work as expected, you need to install the package
@forestadmin/datasource-mongoose.agent.js
mongoose-models.js
const { createAgent } = require('@forestadmin/agent');
const { createMongooseDataSource } = require('@forestadmin/datasource-mongoose');
const connection = require('./mongoose-models');
// Create agent and import collections from mongoose.connection
const agent = createAgent(options).addDataSource(
createMongooseDataSource(connection, { flattenMode: 'none' }),
);
const mongoose = require('mongoose');
const connectionString = 'mongodb://root:password@localhost:27017';
const connection = mongoose.createConnection(connectionString);
connection.model(
'persons',
new mongoose.Schema({
name: String,
age: Number,
// Nested object
address: { streetName: String, city: String, country: String },
// List of nested objects
bills: [{ title: String, amount: Number, issueDate: Date, payedBy: [String] }],
}),
);
module.exports = connection;
One Mongoose collection split into four Forest-Admin collections
When passing
flattenMode: 'none' to the Mongoose data source, the connector will map each Mongoose model to a single Forest Admin collection without transformations.As models in Mongoose can be deeply nested, that may not be what you want:
- Nested references will not be displayed as relations.
- JSON editors will be displayed for nested data.
Text | Description |
|---|---|
flattenMode: 'auto' | Arrays of objects and arrays of references are converted to independent Forest Admin collections. All other fields are moved to the root of each collection |
flattenMode: 'manual' | You are in full control on which virtual collections are created, and which fields are moved |
flattenMode: 'none' | No transformation are made: Forest Admin collection use the exact same structure than your Mongoose models |
flattenMode: 'legacy' | Retro-compatibility with previous versions |
not defined | Equivalent to legacy but a warning is displayed at server startup |
Supposing that
persons records have the following format:{
"name": "Sherlock Holmes",
"age": 54,
"address": {
"streetName": "Baker Street",
"city": "London",
"country": "Great Britain"
},
"bills": [
{
"title": "Rent",
"amount": 0,
"issueDate": "1887-04-17",
"payedBy": ["Sherlock", "John", "Mrs Hudson"]
}
]
}
The following samples are equivalent, and will import two collections into your Forest Admin panel:
personswith the following fields:name,age,address->streetName,address->city,address->country.persons_billswith the following fields:title,amount,issueDate,payedBy.
// Automatic mode
const dataSource = createMongooseDataSource(mongoose.connection, {
flattenMode: 'auto',
});
// Manual mode
const dataSource = createMongooseDataSource(mongoose.connection, {
flattenMode: 'manual',
flattenOptions: {
// name of the Mongoose model
persons: {
// paths that should be converted to independent collections
asModels: ['bills'],
// paths that should be moved to the root of the collection
asFields: ['address'],
// or
// asFields: ['address.streetName', 'address.city', 'address.country'],
// or
// asFields: [{ field: 'address', level: 1 }],
},
},
});
Last modified 3mo ago