Get/set model results (mutators) about node-express-boilerplate

[hagopj13]

@kvlknctk please have a look at the latest version of my code. I removed the transform methods from my models (in f8ba3f6). They were initially there to clean the data that gets returned (replacing _id with id, removing __v, createdAt and updatedAt).

I now recommend defining the transform method of the toJSON schema option: https://mongoosejs.com/docs/api/document.html#document_Document-toJSON

Your code would look something like

theatreSchema.options.toJSON.transform = function (doc, ret, options) {
  if (doc.image) {
    ret.image = `http://localhost:3000/${doc.image}`;
  }
  return ret;
}

The nice thing about this way is that you don't have to explicitly call transform() in the controllers (You should in fact remove it if you are still using it). toJSON will be automatically called on the document when sending the response.

One last tip:
As mentioned above, I was using the transform methods to clean the response data. Now I do that using the toJSON custom plugin. I'm using it in src/models/user.model.js. This plugin removes __v, createdAt, updatedAt, and any schema path that has private: true, and also replaces _id with id. Once it is done doing that, it will call the schema toJSON transform method if any (like the one we defined above).

const { toJSON, paginate } = require('./plugins');

theatreSchema.options.toJSON.transform = function (doc, ret, options) {
  if (doc.image) {
    ret.image = `http://localhost:3000/${doc.image}`;
  }
  return ret;
}

theatreSchema.plugin(toJSON);
theatreSchema.plugin(paginate);

If you defined your schema this way, the transform logic will also work on paginate.

[kvlknctk]

you so helpful, thnx.