Assigning collection id field

Questions and Answers
1

Is it possible to assign the field used for a collection id, such that /foo/:id will use a different field than id to match the record?

2

Yes, you can achieve this by creating a custom controller.

Find one example, this will search by email:

Route: ./api/*/config/routes.json

[
    //...
    {
      "method": "GET",
      "path": "/candidates/:email",
      "handler": "candidates.findOne",
      "config": {
        "policies": []
      }
    }
    //...
]

Controller: ./api/*/controllers/*.js

const { sanitizeEntity } = require('strapi-utils');

module.exports = {
  //...
  async findOne(ctx) {
    let email = ctx.params.email;

    let candidate = await strapi.query('candidates').findOne({ email });

    let entity = sanitizeEntity(candidate, {
      model: strapi.models['candidates'],
    });

    return entity;
  },
  //...
};