Re: how to implement multiple choices in model
On Mon, Nov 17, 2008 at 9:56 PM, Canhua <[EMAIL PROTECTED]> wrote: > > hi, I am trying to create such a kind of field in a model. The field > can only take one or more values from a set of value, each seperated > by such as commas. It seems that there is no built-in field type in > Django. How may I implement this? Any clue is greatly appreciated. > > You could look into writing a custom model field: http://docs.djangoproject.com/en/dev/howto/custom-model-fields/#howto-custom-model-fields You might also want to look at this thread: http://groups.google.com/group/django-users/browse_thread/thread/9bbc54473403ed86/c4efd95a675c2815 ? Karen --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: how to implement multiple choices in model
On Nov 18, 3:52 pm, Daniel Roseman <[EMAIL PROTECTED]> wrote: > Usually you'd do this as a ManyToMany field. However I know you > sometimes do want to do it in a custom model field - I've just posted > my implementation at > djangosnippets:http://www.djangosnippets.org/snippets/1200/ > I've done that with ManyToMany field, which has some inconvenience when display model objects as html table rows, since it is not as convenient to display manytomany as non-related field. --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: how to implement multiple choices in model
On Nov 18, 3:52 pm, Daniel Roseman <[EMAIL PROTECTED]> wrote: > Usually you'd do this as a ManyToMany field. However I know you > sometimes do want to do it in a custom model field - I've just posted > my implementation at > djangosnippets:http://www.djangosnippets.org/snippets/1200/ > I've done that with ManyToMany field, which has some inconvenience when display model objects as html table rows, since it is not as convenient to display manytomany as non-related field. --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: how to implement multiple choices in model
On Nov 18, 2:56 am, Canhua <[EMAIL PROTECTED]> wrote: > hi, I am trying to create such a kind of field in a model. The field > can only take one or more values from a set of value, each seperated > by such as commas. It seems that there is no built-in field type in > Django. How may I implement this? Any clue is greatly appreciated. > > Best wishes > > Can-Hua Chen Usually you'd do this as a ManyToMany field. However I know you sometimes do want to do it in a custom model field - I've just posted my implementation at djangosnippets: http://www.djangosnippets.org/snippets/1200/ -- DR. --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
how to implement multiple choices in model
hi, I am trying to create such a kind of field in a model. The field can only take one or more values from a set of value, each seperated by such as commas. It seems that there is no built-in field type in Django. How may I implement this? Any clue is greatly appreciated. Best wishes Can-Hua Chen --~--~-~--~~~---~--~~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Re: multiple choices in model
On 8/5/06, Michael <[EMAIL PROTECTED]> wrote:
> Hello,
>
> From dajngo documentaytion:
>
>
>
> A choices list looks like this: YEAR_IN_SCHOOL_CHOICES = (
> ('FR', 'Freshman'),
> ('SO', 'Sophomore'),
> ('JR', 'Junior'),
> ('SR', 'Senior'),
> ('GR', 'Graduate'),
> )
>
> Is it possible to have field with multiple choices in model like
>
> year=models.CharField(maxlength=2,
> multiplechoices=YEAR_IN_SCHOOL_CHOICES )?
Short answer: No.
Longer answer: This could be implemented with a custom model field
type, but that's a lot of work.
> The reason for that I have to write web front end for legacy application and
> they store multiple choices in DB as text field. Choices separated by new
> line.
> ManyToManyField not suitable for that case.
For just one field in just one application, I recommend treating it as
a regular text field and implementing your own rendering and
validation.
HTH,
Alan.
>
> --
> --
> Michael
> >
>
--
Alan Green
[EMAIL PROTECTED] - http://bright-green.com
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multiple choices in model
Hello,From dajngo documentaytion:
A choices list looks like this:
YEAR_IN_SCHOOL_CHOICES = (('FR', 'Freshman'),('SO', 'Sophomore'),('JR', 'Junior'),('SR', 'Senior'),('GR', 'Graduate'),)Is it possible to have field with multiple choices in model like
year=models.CharField(maxlength=2, multiplechoices=YEAR_IN_SCHOOL_CHOICES
)?The reason for that I have to write web front end for legacy application and they store multiple choices in DB as text field. Choices separated by new line.ManyToManyField not suitable for that case.
-- --Michael
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