How to perform CRUD on new modules/service?

[aaa3334]

Hi!

I have gone through the tutorial etc. and am wondering how to actually use the CRUD operations which are specified here:

https://docs.medusajs.com/learn/fundamentals/modules

It says: "Your module's service extends a class generated by MedusaService from the Modules SDK. This class comes with generated methods for data-management Create, Read, Update, and Delete (CRUD) operations on each of your modules, saving your time that can be spent on building custom business logic."

import { MedusaService } from "@medusajs/framework/utils";
import { Brand } from "./models/brand";

// Creating the service

class BrandModuleService extends MedusaService({
  Brand,
}) {}

export default BrandModuleService;

But I am struggling how to use the .create part here? Or do I have it wrong?

eg. if I am in workflows create-products

and if I try to add a new line:

    const brandModuleService: BrandModuleService =
      container.resolve(BRAND_MODULE);
    // if the brand doesn't exist, an error is thrown.
    await brandModuleService.retrieveBrand(additional_data.brand_id as string);


    await brandModuleService.create({
      handle: brand.handle,
      title: brand.title,
      description: brand.description || "",
    });

I get:
Property 'create' does not exist on type 'BrandModuleService'.ts(2339)

What is the actual way we are meant to be accessing this so we can trigger the data to be updated when we create a new row?

I am not actually trying to extend the Brand one, but instead add a new row when a new collection is created (a description and custom colours to the Collections page), but it is the same issue in both... I have spent a long time going through the doc's trying to figure out how to do this but its not helping and anything AI suggests I assume is using v1 as it doesn't work.

Thanks in advance!

[olivermrbl]

All autogenerated methods from the MedusaService follow the convention of: service.[method][Pluralized version of the model]. For example, for your data model Brand, the methods are:

async createBrands(...)
async listBrands(...)
async updateBrands(...)
// etc.

Let me know if this helps :)

[aaa3334]

Thank you!! That helps :)