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Set None in case the LocalizedIntegerField is null

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In case the LocalizedIntegerField is null in the DB then it must explicitly be set to None,
otherwise it will yield TypeError: __str__ returned non-string
This commit is contained in:
Adrian Muntean 2019-02-14 14:48:38 +02:00
parent eb2cb6b244
commit a0ca977cab
2 changed files with 13 additions and 2 deletions
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2
README.rst
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@ -279,7 +279,7 @@ Besides ``LocalizedField``, there's also:
Allows storing integers in multiple languages. This works exactly like ``LocalizedField`` except that
all values must be integers. Do note that values are stored as strings in your database because
the backing field type is ``hstore``, which only allows storing integers. The ``LocalizedIntegerField``
the backing field type is ``hstore``, which only allows storing strings. The ``LocalizedIntegerField``
takes care of ensuring that all values are integers and converts the stored strings back to integers
when retrieving them from the database. Do not expect to be able to do queries such as:

13
localized_fields/widgets.py
View File

@ -6,7 +6,7 @@ from django.conf import settings
from django import forms
from django.contrib.admin import widgets
from .value import LocalizedValue
from .value import LocalizedValue, LocalizedIntegerValue
class LocalizedFieldWidget(forms.MultiWidget):
@ -52,6 +52,7 @@ class LocalizedFieldWidget(forms.MultiWidget):
return result
def get_context(self, name, value, attrs):
value = self.remove_if_needed(value)
context = super(forms.MultiWidget, self).get_context(name, value, attrs)
if self.is_localized:
for widget in self.widgets:
@ -98,6 +99,16 @@ class LocalizedFieldWidget(forms.MultiWidget):
return attrs
@staticmethod
def remove_if_needed(value):
"""If the field LocalizedIntegerField is null in the DB then it must
be set to None so it can be represented"""
if isinstance(value, LocalizedIntegerValue):
not_none_score = list(filter(lambda x: value[x] is not None, [i[0] for i in settings.LANGUAGES]))
return value if len(not_none_score) > 0 else None
else:
return value
class LocalizedCharFieldWidget(LocalizedFieldWidget):
"""Widget that has an input box for every language."""