Django like reflection (was: Re: Web development status)

[Hasan Aljudy]

Julio César Carrascal Urquijo wrote:
> Antti Holvikari wrote:
>> On 1/22/07, Hasan Aljudy <hasan.aljudy at gmail.com> wrote:
>>> I wish we'd have a framework similar to Django, however, come to think
>>> of it .. I'd rather use Django than wait for a D clone .. which I don't
>>> think can be more powerful since D doesn't have any dynamic reflection
>>> capabilities.
>>
>> Hmm, hope I'm not missing something here but why would you need
>> reflection for that?
>>
> 
> Django uses python's reflections capabilities to bind classes to SQL 
> tables and build administration interfaces in ways that I don't thing 
> even the compile time reflection capabilities of D can implement.
> 
> The following code taken from the Django tutorial admin interfaces for 
> this Master/Details model with all the features you will expect: 
> Pagination, searching, basic validation and form field grouping. Adding 
> filtering and custom validation is really easy.
> 
> from django.db import models
> 
> class Poll(models.Model):
>     question = models.CharField(maxlength=200)
>     pub_date = models.DateTimeField('date published')
> 
>     class Admin:
>         fields = (
>             (None, {'fields': ('question',)}),
>             ('Date information', {'fields': ('pub_date',)}),
>         )
> 
> class Choice(models.Model):
>     poll = models.ForeignKey(Poll)
>     choice = models.CharField(maxlength=200)
>     votes = models.IntegerField()
> 
>     class Admin:
>         pass
> 
> As you can see, Django uses reflection to build all of this 
> functionality with just some hints from the programmer.


I'm wondering whether this can be achieved now with the new mixin semantics.

The usage maybe ugly:

mixin(
         models.Model!("poll",
             models.CharField!("question"),
             models.DateTimeField!("pubdate")
             )
             );


But maybe this can generate some rich code .. I wish had the time and 
experience to take on this.

Anyone willing to give it a try?