Cannot create module without defined DB model, Prisma throws error

[jog1t]

@kacper said:

Can't create a module without a defined db model. Prisma throws an error.

Steps to reproduce:

1. Init new OpenGB
2. Adds some modules
3. Run opengb create script my_module
4. Run opengb create script my_module test
5. Run opengb dev

You should see the following error:

error: Failed to run: prisma generate

  stdout: Prisma schema loaded from schema.prisma
  Prisma schema loaded from schema.prisma
  stderr: Error: 
You don't have any models defined in your schema.prisma, so nothing will be generated.
You can define a model like this:

model User {
  id    Int     @id @default(autoincrement())
  email String  @unique
  name  String?
}

More information in our documentation:
https://pris.ly/d/prisma-schema
  Error: 
  You don't have any models defined in your schema.prisma, so nothing will be generated.
  You can define a model like this:

  model User {
    id    Int     @id @default(autoincrement())
    email String  @unique
    name  String?
  }

  More information in our documentation:
  https://pris.ly/d/prisma-schema

Failed. Found 1 error.

[linear[bot]]

OGBE-164 Cannot create module without defined DB model, Prisma throws error

[greptile-apps[bot]]

To resolve the issue of creating a module without a defined DB model, follow these steps:

1. Modify the schema.prisma file to include a default model if none are defined. This can be done in the runPrismaCommand function in /src/migrate/prisma.ts.

// Append generator config
const schemaPath = resolve(dbDir, "schema.prisma");
let schema = await Deno.readTextFile(schemaPath);

// Check if schema contains any model definitions
if (!/model\s+\w+\s+\{/.test(schema)) {
  schema += dedent`
    model DefaultModel {
      id    Int     @id @default(autoincrement())
      name  String?
    }
  `;
}

schema += dedent`
  // Generated by Open Game Backend
  generator client {
    provider = "prisma-client-js"
    output = "${dbDir}/client"
    previewFeatures = ["driverAdapters"]
  }
`;
await Deno.writeTextFile(schemaPath, schema);

This will ensure that a default model is added to the schema.prisma file if no models are defined, preventing Prisma from throwing an error.

References

/src/runtime/runtime.ts /tests/basic/modules/foo/db/schema.prisma /src/migrate/prisma.ts /src/migrate/generate.ts /src/cli/commands/db.ts

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