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

[Paul]

If you just want to see (read) the contents you could do this:

class Example(models.Model):
value = PickledObjectField()

def value_unpacked(self):
return u'{value}'.format(value=self.value)
filter_link.allow_tags = True

class ExampleAdmin(admin.ModelAdmin):
list_display = ('id', 'value_unpacked',)
 
Actually modifying it is obviously more difficult as it can be ... anything 
indeed

Paul

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

[lacrymol...@gmail.com]

The short of it is that you should probably subclass the picklefield to add 
some new validation (basically is_integer_two_tuple_list), and write a custom 
widget for it that does what you want on the html side. The long of it needs 
not being written from a phone

-Mensaje original-
De: Alphydan
Enviados:  24/10/2012 19:58:29
Asunto:  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<http://stackoverflow.com/questions/13034922/storing-a-curve-in-a-django-model-as-manytomany>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 > 
> 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 
> > 
> > |_|0|_| 
> > |_|_|0| 
> > |0|0|0| 
> > 
> > (\__/) 
> > (='.'=)This is Bunny. Copy and paste bunny 
> > (")_(") 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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Re: Displaying a custom field (PickledObjectField) in the admin

[Alphydan]

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 
questionI
 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 > 
> 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 
> > 
> > |_|0|_| 
> > |_|_|0| 
> > |0|0|0| 
> > 
> > (\__/) 
> > (='.'=)This is Bunny. Copy and paste bunny 
> > (")_(") 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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Re: Displaying a custom field (PickledObjectField) in the admin

[Tomas Neme]

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  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
>
> |_|0|_|
> |_|_|0|
> |0|0|0|
>
> (\__/)
> (='.'=)This is Bunny. Copy and paste bunny
> (")_(") 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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Re: Displaying a custom field (PickledObjectField) in the admin

[Tomas Neme]

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

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

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

-- 
You received this message because you are subscribed to the Google Groups 
"Django users" group.
To post to this group, send email to django-users@googlegroups.com.
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Re: Displaying a custom field (PickledObjectField) in the admin

[John DeRosa]

Nope, I didn't find a solution. I moved on to another issue and never got back 
to this. We just learned to work around this, I'm semi-ashamed to say.

John

On Oct 23, 2012, at 2:29 PM, Alphydan  wrote:

> I have the same problem (on ubuntu, python 2.7, django 1.4, 
> django-picklefield 0.2.1) ... does anybody have any insight?
> John, did you find a solution?
> 
> Thank you. 
> 
> On Thursday, 8 April 2010 19:30:20 UTC+1, John DeRosa wrote:
> Hello Djangonauts,
> 
> I'm doing something wrong, but I just can't see it!
> 
> My problem is that a custom model field isn't being displayed in the Admin 
> interface.
> 
> I'm running OS X 10.6.3, Python 2.6, and Django 1.1.1. I installed 
> django-picklefield 0.1.5 from PyPi, and I'm trying to use it in a database 
> model. I defined a couple of custom PickledObjectField fields. They show up 
> in the Admin model docs as being of type "Text", but they *don't* show up in 
> the Admin when I add or change a row.
> 
> Here's what I'm doing. What am I doing wrong?
> 
> John
> 
> --
> 
> In models.py:
> 
> from picklefield.fields import PickledObjectField
> 
> class LayoutTemplate(models.Model):
> [snip]
> attachment_points = PickledObjectField(help_text="A list of 
> TemplateAttachmentPoints")
> placed_objects = PickledObjectField(blank=True,
> help_text="A list of objects placed 
> on this template")
> # These LayoutObjects are allowed on this template.
> allowed_objects = PickledObjectField(help_text="A list of allowed 
> objects.")
> 
> def __unicode__(self):
> return u"%s" % self.name
> 
> 
> In admin.py:
> 
> from hosted.models import LayoutTemplate
> from django.contrib import admin
> admin.site.register(LayoutTemplate)
> 
> 
> 
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
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> To view this discussion on the web visit 
> https://groups.google.com/d/msg/django-users/-/QHA-yQ1spEIJ.
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Re: Displaying a custom field (PickledObjectField) in the admin

[Alphydan]

I have the same problem (on ubuntu, python 2.7, django 1.4, 
django-picklefield 0.2.1) ... does anybody have any insight?
John, did you find a solution?

Thank you. 

On Thursday, 8 April 2010 19:30:20 UTC+1, John DeRosa wrote:
>
> Hello Djangonauts,
>
> I'm doing something wrong, but I just can't see it!
>
> My problem is that a custom model field isn't being displayed in the Admin 
> interface.
>
> I'm running OS X 10.6.3, Python 2.6, and Django 1.1.1. I installed 
> django-picklefield 0.1.5 from PyPi, and I'm trying to use it in a database 
> model. I defined a couple of custom PickledObjectField fields. They show up 
> in the Admin model docs as being of type "Text", but they *don't* show up 
> in the Admin when I add or change a row.
>
> Here's what I'm doing. What am I doing wrong?
>
> John
>
> --
>
> In models.py:
>
> from picklefield.fields import PickledObjectField
>
> class LayoutTemplate(models.Model):
> [snip]
> attachment_points = PickledObjectField(help_text="A list of 
> TemplateAttachmentPoints")
> placed_objects = PickledObjectField(blank=True,
> help_text="A list of objects 
> placed on this template")
> # These LayoutObjects are allowed on this template.
> allowed_objects = PickledObjectField(help_text="A list of allowed 
> objects.")
>
> def __unicode__(self):
> return u"%s" % self.name
>
>
> In admin.py:
>
> from hosted.models import LayoutTemplate
> from django.contrib import admin
> admin.site.register(LayoutTemplate)
>
>
>
>

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