org.hibernate.PersistentObjectException: detached entity passed to persist: models.car

[cronix]

Hi everybody,

I have a strange persistance problem that i can't explain to my self,
I hope you can help.


Example:

A controller method that recieves values from a post as a list of
objects.

form:

<form action="@{Cars.canHas()}" method="POST" enctype="multipart/form-
data">
<input type="hidden"name="cars[0].id" id="cars[0].id" value="1" />
<--- an object with this ID is in the database
<input type="hidden"name="cars[1].id" id="cars[1].id" value="2" />
<--- an object with this ID is in the database
</form>
method:
public static void canHas( List<Car> cars){

car.save(); -> org.hibernate.PersistentObjectException: detached
entity passed to persist: models.car
}

[GrailsDeveloper]

This can happens if the car don't exists anymore in the database. Try
to catch the ids and check if they are really exists in the database.
Niels

[cronix]

It does exist in the database, that is my problem. if merge it first
an then save it, it works.

Before saving the object every other attribute of the car is null,
even if it has attributes stored in the database.

On Nov 6, 5:32 pm, GrailsDeveloper <opensourc...@googlemail.com>
wrote:

[Guillaume Bort]

Have specified a cascade property on your relation?

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[cronix]

what makes you think that there is any relation involved? It is only a
list cars and a car has no relation to any other model.

> Guillaume Bort,http://guillaume.bort.fr

>
> For anything work-related, use g...@zenexity.fr; for everything else,

> write guillaume.b...@gmail.com