Task entity

Entities are one of the very central concepts in Wasp, and they mainly play the role of data models.

Since our TodoApp is all about tasks, we will define Task entity in Wasp:

main.wasp

// ...
entity Task {=psl    id          Int     @id @default(autoincrement())    description String    isDone      Boolean @default(false)psl=}

Since Wasp uses Prisma as a database, definition of an entity comes down to defining a Prisma model, using PSL (Prisma Schema Language) inside the {=psl psl=} tags.

After this change and before running wasp start, we first need to run:

wasp db migrate-dev

This instructs Prisma to create a new database schema migration (you'll see a new directory migrations/ appeared in the root dir of our app) and apply it to the database.

To take a look at the database and the new Task schema, run:

wasp db studio

Click on the specific entity (we have only Task for now) and check out its fields! We don't have any data yet in our database, but we are about to change that.