Segments
A Segment is a subset of a collection: it's a saved filter of your collection.
Segments are designed for those who want to systematically visualize data according to specific sets of filters. It allows you to save your filter configuration so you don’t have to compute the same actions every day.

Segments can be configured from the interface, without the need to write any code.
Sometimes, segment filters are complicated and closely tied to your business. Forest Admin allows you to code how the segment is computed.
For instance, in our Live Demo example ↗, we’ve implemented a Segment on the collection
products
to allow admin users to see the bestsellers at a glance.As Forest Admin does not impose any restriction on the handler, you are free to call external APIs or query your database directly instead.
The only requirement when implementing a segment from your agent is to return a valid
ConditionTree
(see Understanding Filters).agent.customizeCollection('products', collection =>
collection.addSegment('mySegment', async context => {
// Query the ids of the 10 most populate products by looking at the `orders` collection.
const rows = await context.dataSource
.getCollection('orders')
.aggregate({}, { operation: 'Count', groups: [{ field: 'product_id' }] }, 10);
// Return a condition tree which matches those records
return { field: 'id', operator: 'In', value: rows.map(r => r['product_id']) };
});
);
Last modified 1mo ago