Hello django-users,
I have a unmanaged model, of legacy database, used only to read.
I need to clean the value of a field returned in a annotated query.
I try created a new model field inherits from TextField and override
to_python method to clean the value (remove all html using python-bleach),
and use in a query like:
FooBar.objects.annotate(title=ExpressionWrapper(F('html_title'),
output_field=RemoveHTMLTextField())) .
I expected the method to_python was called, but it does not.
Any idea how to solve this problem?
this is probably wrong, but it was the only way I thought so far....
####
import bleach
from django.db import models
from django.template.defaultfilters import striptags
from django.utils.safestring import mark_safe
class RemoveHTMLTextField(models.TextField):
def to_python(self, value):
original_value = super(RemoveHTMLTextField, self).to_python(value)
striped_str = striptags(original_value)
return mark_safe(bleach.clean(striped_str))
####
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