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Add Override Table Name For Prisma Model as a Prisma TIL

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jbranchaud
2024-05-20 09:05:44 -05:00
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commit 84e2c9c6f4
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For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
_1432 TILs and counting..._
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- [Execute A Raw SQL Query](prisma/execute-a-raw-sql-query.md)
- [Grab A Limited Set Of Records](prisma/grab-a-limited-set-of-records.md)
- [Open Connections To Multiple Databases](prisma/open-connections-to-multiple-databases.md)
- [Override Table Name For Prisma Model](prisma/override-table-name-for-prisma-model.md)
- [Specify Alternate Location For Prisma Schema](prisma/specify-alternate-location-for-prisma-schema.md)
### Python

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# Override Table Name For Prisma Model
When defining your Prisma schema, you'll add models to your
`prisma/schema.prisma` file that look something like this:
```
model Book {
id BigInt @id @default(autoincrement()) @db.BigInt
title String
author String
publication_year Int
created_at DateTime @default(now())
updated_at DateTime @updatedAt
}
```
The prisma client (ORM-layer) that gets generated will have a `Book` type and
you'll be able to reference the model to, for instance, create a record with
`prisma.book.create(...)`. Both of these things are derived from the model
name: `Book`.
The other thing that is derived from the model name is the name given to the
underlying database table. So you end up with a table called `Book`. You may,
however, prefer a table naming convention where this one would be named `books`
(snake_case and pluralized).
To achieve that, you have to manually override the table name with [the `@@map`
directive](https://www.prisma.io/docs/orm/reference/prisma-schema-reference#map-1).
Add it toward the bottom of the model like so:
```
model Book {
id BigInt @id @default(autoincrement()) @db.BigInt
title String
author String
publication_year Int
created_at DateTime @default(now())
updated_at DateTime @updatedAt
@@map("books")
}
```