export const metadata = { title: no-reserved-default-properties-in-model - ESLint plugin rules, }

{metadata.title}

This rule disallows redefining the reserved default properties created_at, updated_at, and deleted_at in model.define.

Severity

error. This rule is enabled in the recommended preset.

What it Targets

This rule targets data model files in your project's src/modules directory. It reports a created_at, updated_at, or deleted_at property in a model.define schema, since Medusa adds these automatically.

The following code is reported by the rule:

import { model } from "@medusajs/framework/utils"

export const Post = model.define("post", {
  id: model.id().primaryKey(),
  created_at: model.dateTime(),
})

Instead, remove the reserved property:

import { model } from "@medusajs/framework/utils"

export const Post = model.define("post", {
  id: model.id().primaryKey(),
})

Why it's Important

Medusa automatically adds created_at, updated_at, and deleted_at to every data model. Redefining them in your schema is redundant and can conflict with the auto-added columns.

Learn more in the Data Models documentation.

Fixable

This rule is auto-fixable. Run the linter with the --fix option to apply the fix automatically.