python - In django, how can I retrieve a value from db into a custom field template? -

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i using custom class on model provide image uploading, through app called django-filebrowser.

# myapp/models.py class book(models.model):     name = models.charfield(max_length=30)     image = filebrowsefield("image", max_length=200, blank=true, null=true)     ...

the model uses filebrowser's custom field "filebrowserfield", adds link separate upload page (http://site/admin/filebrowser/browse/?ot=desc&o=date). i'd tweak custom form's template add "dir" parameter, so: (http://site/admin/filebrowser/browse/?ot=desc&o=date&dir=book1). book1, in case, retrieved "name" charfield of book.

i know template want modify rendered filebrowser's fields.py, , there variable sets "dir" parameter, i don't know how fetch string value own model fields.py can set variable. have suggestions?

found solution elsewhere, thought i'd share it:

# models.py class book(models.model):     name = models.charfield(max_length=30)     image = filebrowsefield("image", max_length=200, blank=true, null=true)  ...      def __init__(self, *args, **kargs):                                                         super(property, self).__init__(*args, **kargs)                                      self._meta.get_field_by_name("image")[0].directory = self.name

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