slick-pg | Slick extensions for PostgreSQL | SQL Database library
kandi X-RAY | slick-pg Summary
kandi X-RAY | slick-pg Summary
[Join the chat at [Slick] "Slick") extensions for PostgreSQL, to support a series of pg data types and related operators/functions.
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QUESTION
I am trying Scala with Play framework and coming from 10+ years of Java/Spring experience
Below is the source code I am trying
Routes file
...ANSWER
Answered 2021-Aug-14 at 16:35In the error message "No Json serializer found for type models.Stock.type
", one important thing to notice is the .type
suffix.
It's referring to the object Stock
, not the case class
. That is the error is saying "I don't know how to serialize object Stock
".
This is because you wrote Json.toJson(Stock)
instead of Json.toJson(Stock())
or maybe you meant Json.toJson(stocks)
.
Stock
refers to the object
while Stock()
is Instantiating the case class
.
Also:
- you don't need to specify the
as(...)
if using aJsObject
in the result. - you dont'e need a
Reads
nor aWrites
if you provide aFormat
(the later is providing the 2 former) - use
val
rather thanvar
(immutability is the strength of Scala)
QUESTION
I have two tables:
Shop
class ShopTable(tag: Tag) extends GenericTableShop, UUID {
...
ANSWER
Answered 2021-Apr-14 at 15:34Yes, this solution is work fine
QUESTION
I am new to Slick and I am having hard time to express SQL window function in Slick. My database profile is SQL Server so I cannot use slick-pg.
The problem that I want to solve is simple in SQL (below). Essentially, it is just to find the largest rowid
for each destination
. How to write in this in Slick?
ANSWER
Answered 2020-Sep-15 at 06:00Slick does not support this functionality in its query DSL, so you'll need to use Slick's support for plain SQL queries.
QUESTION
I'm new to scala and I'm trying to integrate a PostgreSQL database to a Lagom application written in scala.I'm trying to utilise the persistence API of Lagom. Lagom has inbuilt support for slick.
My table has 3 fields id of type int, name of type string, data of type jsonb
Since Slick doesn't support json format I'm trying to use slick-pg .
Below is my implementation
My custom profile class
...ANSWER
Answered 2020-Jul-27 at 09:59Your object CustomPostgresProfile
extends PostgresProfile
instead of CustomPostgresProfile
. If you fix that, it works.
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