Re: Displaying a custom field (PickledObjectField) in the admin

Hi Tomas & John,

Thank you for your reply.  Basically I'm trying to save curves which I chose to format as:
[[0,0],[1,0],[2,1],[3,1], ... ,[40,0]]

To see what I tried before (models, etc) you can see the stackoverflow question I asked previously.
Some people there suggested the django-picklefield so I implemented it but couldn't get the admin to work.
Unfortunately I would eventually need users to put in numbers in a template.

For the moment I'm just saving a TextField and doing some pretty coarse and inelegant validation + assuming we enter the curves in the admin.

    def save(self, *args, **kwargs):
        pc = self.my_power_curve
        if pc[0]!='[':
            pc = 'error. no initial [ --- ' + pc
            self.my_power_curve = pc
        elif pc[-1] != ']':
            pc = 'error. no final ] --- ' + pc
            self.my_power_curve = pc
        elif  pc.count('[') != 42 or pc.count(']') !=42:
            pc = 'error. 41 pairs [,] are required or too many brackets --- ' + pc
            self.my_power_curve = pc
        elif  len(pc)>362:
            pc = 'error. too many items --- ' + pc
            self.my_power_curve = pc
        elif pc.count('(') != 0 or pc.count(')') != 0:
            pc = 'error. only "[" and "]" brackets allowed --- ' + pc
            self.my_power_curve = pc
        else:
            pass
        return super(SomeClass, self).save(*args, **kwargs)


Ideally I would create form with say 41 little fields:
value 1 = [  ]
value 2 = [  ]
value 3 = [  ]
...
value 41 = [  ]

and when the users completes some of them, I save it as a string:
"[[0,0],[1,1],[2,3],[10,20],[20,20],[40,0]]"

Eventually I want to retrieve them and calculate things (like area under the curve or make a graph).

Any ideas are appreciated,

Thank you,
Alvaro

On Wednesday, 24 October 2012 20:14:16 UTC+1, Tomas Neme wrote:

Just by the way, I'm looking at django-picklefield code and README
https://github.com/gintas/django-picklefield and it says NOTHING about
a widget, or an admin representation, so.. maybe it's not DESIGNED to
be shown on the admin? it'd make sense, too, since it's.. well, it can
be ANYTHING....

On Wed, Oct 24, 2012 at 3:03 PM, Tomas Neme <lacry...@gmail.com> wrote:
> maybe restate the problem, give some more code, show your models, and
> your admin files, and someone may be able to help a little
>
> --
> "The whole of Japan is pure invention. There is no such country, there
> are no such people" --Oscar Wilde
>
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> (\__/)
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> (")_(") to help him gain world domination.



--
"The whole of Japan is pure invention. There is no such country, there
are no such people" --Oscar Wilde

|_|0|_|
|_|_|0|
|0|0|0|

(\__/)
(='.'=)This is Bunny. Copy and paste bunny
(")_(") to help him gain world domination.

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