70 lines
2.0 KiB
Plaintext
70 lines
2.0 KiB
Plaintext
export const metadata = {
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title: `${pageNumber} Database Operations in Service Methods`,
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}
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# {metadata.title}
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In this document, you’ll learn how to implement database operations, such as creating a record, in the main service.
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## Use Data Model Services
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The module container has a generated service registered for each data model. You can resolve that service and use it to perform database operations on the data model.
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For example:
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export const highlights = [
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["13", "", "Inject myCustomService, which is the service generated by the container loader for the MyCustom data model."],
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["22", "", "Add a new field for the generated service of the MyCustom data model."],
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["29", "", "Set the class field to the injected dependency."],
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["35", "create", "Use the `create` method of the generated service."]
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]
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```ts title="src/modules/hello/service.ts" highlights={highlights}
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// other imports...
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import { ModulesSdkTypes } from "@medusajs/types"
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import { MyCustom } from "./models/my-custom"
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// ...
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// recommended to define type in another file
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type CreateMyCustomDTO = {
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name: string
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}
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type InjectedDependencies = {
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myCustomService: ModulesSdkTypes.InternalModuleService<any>
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}
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class HelloModuleService extends ModulesSdkUtils
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.abstractModuleServiceFactory<
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// ...
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>(
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// ...
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) {
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protected myCustomService_: ModulesSdkTypes.InternalModuleService<MyCustom>
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constructor(
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{ myCustomService }: InjectedDependencies
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) {
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// @ts-ignore
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super(...arguments)
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this.myCustomService_ = myCustomService
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}
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async create(
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data: CreateMyCustomDTO
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): Promise<MyCustomDTO> {
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const myCustom = await this.myCustomService_.create(
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data,
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context
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)
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return myCustom
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}
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}
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```
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In the above example, you resolve `myCustomService` in the main service's constructor. The `myCustomService` is the generated service for the `myCustom` data model.
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Then, in the `create` method of the main service, you use `myCustomService`'s `create` method to create the record.
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