custom_endpoint_1_directusv9.js

// Snippet for Directus' custom endpoint (tested on v9.8.0)
// This snippet checks if a role named "Homepage" is present and authenticates with it to execute custom logic
// In this case, it returns *all* items inside "products" where "visible_on_homepage" is set to true. 

const { getPermissions } = require('directus/utils/get-permissions');
const { getSchema } = require('directus/utils/get-schema');

module.exports = function registerEndpoint(router, { services, exceptions, database }) {
    router.get('/products', async (req, res, next) => {
        const { ItemsService } = services;
        const { ServiceUnavailableException } = exceptions;

        // Searches for the role named "Homepage" and gets its UUID for the accountability authentication
        // This is made that way to ease portability since there can be different UUIDs on dev and prod server
        const role_res = await database("directus_roles").select("id").where({ name: "Homepage" });
        if (role_res.length === 0) {
            return next(new ServiceUnavailableException("Role doesn't exist"));
        }

        const accountability = {
            role: role_res[0].id,
            admin: false,
            app: false
        };

        const schema = await getSchema(accountability);
        accountability.permissions = await getPermissions(accountability, req.schema);

        const ProductsService = new ItemsService('products', { schema, accountability: accountability });
        ProductsService
            .readByQuery({ fields: ['model'], filter: { visible_on_homepage: true }, limit: -1 })
            .then((results) => {
                res.json(results);
            })
            .catch((error) => {
                return next(new ServiceUnavailableException(error.message));
            });
    });

};