Wasp-lang•6mo ago

Timestamp with time zone attribute in PostgreSQL Database

Given I use a postgres database and I want to add a "timestamp with time zone" attribute to a given WASP entity, what's the correct syntax? entity JobAd {=psl id Int @id @default(autoincrement()) description String isDone Boolean @default(false) user User? @relation(fields: [userId], references: [id]) userId Int? creationTimestamp Timestamp with time zone @default(now()) psl=}

3 Replies

kapa.ai•6mo ago

Hi @OrBlatt. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- In Wasp, entities are defined using Prisma Schema Language (PSL). According to the provided knowledge sources, the timestamp with time zone data type is not explicitly mentioned. However, Prisma supports the DateTime type, which can be used to store date and time values. Here is how you can define a creationTimestamp field with a default value of the current time:

entity JobAd {=psl
    id          Int     @id @default(autoincrement())
    description String
    isDone      Boolean @default(false)
    user        User?    @relation(fields: [userId], references: [id])
    userId      Int?
    creationTimestamp DateTime @default(now())
psl=}

entity JobAd {=psl
    id          Int     @id @default(autoincrement())
    description String
    isDone      Boolean @default(false)
    user        User?    @relation(fields: [userId], references: [id])
    userId      Int?
    creationTimestamp DateTime @default(now())
psl=}

In this case, DateTime is used instead of Timestamp with time zone. The @default(now()) directive sets the default value of creationTimestamp to the current date and time. Please note that while DateTime does include time information, it does not include timezone information. If you need to store timezone information, you might need to store it in a separate field. For more information on defining entities in Wasp, you can refer to the official documentation (https://wasp-lang.dev/docs/data-model/entities#defining-an-entity). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @OrBlatt, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

OrBlattOP•6mo ago

If I use DateTime attribute, will it be migrated from DateTime to Timestamp with time zone when I move from SQLite to PostgreSQL? I'm asking because PostgreSQL is mandatory for deployment.

martinsos•6mo ago

If unsure, it is probably best to start with PosgreSQL right away! It is easy to run the database for development, you need Docker installed and can just do wasp start db

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Timestamp with time zone attribute in PostgreSQL Database