How to override the default loopback model API paths - node.js

Question

How can we override the default loopback REST API model end points? For example, I would like to invoke a custom model method named list when the following GET API is invoked.
I am referring to the documentation https://loopback.io/doc/en/lb2/Exposing-models-over-REST.html
1.API endpoint from loopback explorer: http://localhost:3000/api/Assets
2.Model method definition:
Asset.list = function(cb) {
console.log("called");
}
Asset.remoteMethod('list', {
http: {path: '/'},
returns: {type: 'Object', root: true}
});

Answer 1

If you want to use not default path (not used by default methods) you should add new remote method to JSON model config and define method in JS model file:
"methods": {
"myCustomMethod": {
"accepts": [
{
"arg": "req",
"type": "object",
"http": {
"source": "req"
}
}
],
"returns": [
{
"type": "Array",
"root": true
}
],
"http": {
"verb": "GET",
"path": "/myCustomPath"
}
}
}
Candidate.myCustomMethod = (req) => {//method code}
If you want to override default loopback path (autogenerated methods) you also should disable default method.
Candidate.disableRemoteMethodByName('find');
So now you can change in JSON config "/myCustomPath" to "/" and your remote method would refer to your function instead of default.

Answer 2

Your console.log("called"); should appear in your terminal only, not as a return on your web browser - that's maybe why you aren't seeing it at the moment.
If you want to see something on your web browser, you have to return a value for you callback, like:
module.exports = function (Asset) {
Asset.list = function(cb) {
console.log("called");
cb(false, {'called': true}); // cb(error, returned value(s));
}
Asset.remoteMethod('list', {
http: {verb: 'get'},
returns: {type: 'Object', root: true}
});
}
This file should be in your common/model/asset.js
In your server/model-config.json, do not forget to reference your model:
...
"Asset": {
"dataSource": "yourdatasource", //change this by your datasource name
"public": true
}
...