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allow DictField to be None

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j 2012-09-25 13:26:50 +02:00
parent 8f82cefa78
commit 7c60ddd584
1 changed files with 4 additions and 0 deletions
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4
ox/django/fields.py
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@ -40,6 +40,8 @@ class DictField(models.TextField):
def to_python(self, value): def to_python(self, value):
"""Convert our string value to python after we load it from the DB""" """Convert our string value to python after we load it from the DB"""
if value == None:
return value
if isinstance(value, dict): if isinstance(value, dict):
return value return value
try: try:
@ -51,6 +53,8 @@ class DictField(models.TextField):
def get_db_prep_save(self, value, connection): def get_db_prep_save(self, value, connection):
"""Convert our JSON object to a string before we save""" """Convert our JSON object to a string before we save"""
if value == None:
return value
assert isinstance(value, dict) assert isinstance(value, dict)
value = json.dumps(value, default=to_json) value = json.dumps(value, default=to_json)
return super(DictField, self).get_db_prep_save(value, connection=connection) return super(DictField, self).get_db_prep_save(value, connection=connection)