Hi Fábio,
Since the deprecation of `SubfieldBase`[1] you must implement a
`from_db_value()`[2] method to convert the value as returned by the database
to the correct Python object.
Out of curiosity, is there a reason you are doing this the model level? It
looks like something that belongs to the form or template layer.
Cheers,
Simon
[1] https://docs.djangoproject.com/en/1.9/releases/1.8/#subfieldbase
[2] https://docs.djangoproject.com/en/1.9/ref/models/fields/#django.db.models.Field.from_db_value
Le jeudi 31 mars 2016 10:15:38 UTC-4, Fabio Caritas Barrionuevo da Luz a écrit :
-- Since the deprecation of `SubfieldBase`[1] you must implement a
`from_db_value()`[2] method to convert the value as returned by the database
to the correct Python object.
Out of curiosity, is there a reason you are doing this the model level? It
looks like something that belongs to the form or template layer.
Cheers,
Simon
[1] https://docs.djangoproject.com/en/1.9/releases/1.8/#subfieldbase
[2] https://docs.djangoproject.com/en/1.9/ref/models/fields/#django.db.models.Field.from_db_value
Le jeudi 31 mars 2016 10:15:38 UTC-4, Fabio Caritas Barrionuevo da Luz a écrit :
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 bleachfrom django.db import modelsfrom django.template.defaultfilters import striptagsfrom django.utils.safestring import mark_safeclass 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)) ####Fábio C. Barrionuevo da Luz
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