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  • Under the hood
    • .forestadmin-schema.json
    • Data Model
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  1. Data Sources
  2. Getting Started

Cross-data source relationships

PreviousNaming conflictsNextQuery interface and Native Queries

Last updated 1 year ago

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This is the official documentation of the @forestadmin/agent Node.js agent.

Adding as many data sources as you need is good, inter-connecting them together is better.

The relation mechanism allows you to add a relation between different data sources, regardless of their type.

If you want to know more about adding relations, please refer to this .

const { createAgent } = require('@forestadmin/agent');
const { createSqlDataSource } = require('@forestadmin/datasource-sql');
const { createMongooseDataSource } = require('@forestadmin/datasource-mongoose');

// Plug multiple data sources to a single agent.
const agent = createAgent(options)
  .addDataSource(createSqlDataSource('postgres://user:pass@a.server:5432/mySchema'))
  .addDataSource(
    createSqlDataSource('postgres://user:pass@another.server:5432/anotherSchema'),
  )
  .addDataSource(createMongooseDataSource(require('./mongoose-models')));

// Add a relation between a Mongoose collection and a SQL collection.
agent.customizeCollection('countryFromMongoose', collection =>
  collection.addOneToManyRelation('towns', 'townsFromPostgres', {
    originKey: 'country_id',
  }),
);
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