On Wed, Mar 11, 2009 at 5:42 PM, Vincent <jellygr...@gmail.com> wrote:
>
> Hi all:
>
> I am just getting started with Django and could really use some
> initial help. My first hurdle is this: I would like to have the act of
> choosing a file automatically propagate several of fields of my model.
> Bellow is an example of the model of interest here:
>
> ##models.py
> from django.db import models
>
> class Media(models.Model):
> media_name = models.CharField('name', max_length=100)
> media_size = models.IntegerField('file size in bytes')
> media_hash = models.CharField('SHA1 hash', max_length=40)
> media_loc = models.FileField(upload_to='test',
> verbose_name="media")
> is_active = models.BooleanField('is active?')
> add_date = models.DateTimeField('date added', auto_now_add=True)
>
> class Meta:
> verbose_name = "Media File"
>
> def __unicode__(self):
> return self.media_name
> return self.media_hash
>
> The desired behavior is to be able to select a file to upload and have
> it validated. Then, either during the validation process or
> afterwards, I would like to populate the fields of my model with data
> that is detected from the file. Data such as: the file's size, the
> file name and an SHA1 hash of the file.
>
> Just to restate, I would really like to be able to do this from within
> the provided admin interface. I am not able to figure out how to even
> validate this file from within the admin, let alone perform additional
> operations on it.
>
> Thanks,
>
> ~Vincent
>
> >
>
For additional validation you should provide a custom form:
http://docs.djangoproject.com/en/dev/ref/contrib/admin/#form
and to set the fields automatically you should use the save_model hook:
http://docs.djangoproject.com/en/dev/ref/contrib/admin/#save-model-self-request-obj-form-change
Alex
--
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say it." --Voltaire
"The people's good is the highest law."--Cicero
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