Re: function model which generate a code for model field

Its not clear what you mean by "last"; do you mean a record that already exists in the database and has a ID value - or do you want the ID of the current record?  Either way, the code field should not be resetting the '0' to a '1' as this is then misrepresenting the actual data.

PS The logic to create the string looks a bit clunky; why not use rjust to get the correct number of prefix zeros?

On Monday, 25 May 2020 22:33:30 UTC+2, Anselme SERI wrote:

hello,

I am trying to create a function which will recover the last id of my model which I will increment and add to a character string, and I would like to add this new value (x = last id incremented + string) be added to the "code" field "of my model when I make a new recording.

How else could we use the id field which automatically increments to perform such an action?

Anselme S.

Le dim. 24 mai 2020 à 20:12, Kasper Laudrup <lau...@stacktrace.dk> a écrit :

Hi Anselme,

On 24/05/2020 17.48, Anselme SERI wrote:
>
> I try  to to write a correct function for my model which  generate a str
> + incremental number according last id model.
>

Your code is obviously wrong for quite a few reasons, but I at least
simply cannot understand what you are trying to achieve.

What should the "correct function" do?

The id field of a model is already incremental. Do you simply want to
append that to a string and what do you want to do with that string?

Kind regards,

Kasper Laudrup

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