def to_dict(self, dehydrate_fields=None, excludes=None, json_fields=None, exclude_common=True):
"""
Deserialize model object to simple dict object
"""
dehydrate_fields = dehydrate_fields or []
excludes = excludes or []
if exclude_common:
excludes.extend(MODEL_COMMON_FIELDS)
json_fields = json_fields or []
data = {}
for field in self._meta.fields:
field_name = field.name
if field_name in excludes:
continue
field_value = getattr(self, field_name)
if not field_value:
data[field_name] = None
continue
if field_name in json_fields:
data[field_name] = json.loads(field_value)
continue
if isinstance(field, (ImageField, ImageFieldFile, FileField)):
data[field_name] = get_absolute_url_path(field_value.url)
continue
if isinstance(field, ForeignKey):
data[field_name] = field_value.to_dict() if field_name in dehydrate_fields else str(getattr(self, '{}_id'.format(field_name)))
continue
if isinstance(field, (DateField, DateTimeField)):
data[field_name] = datetime2timestamp(field_value)
continue
if isinstance(field, (UUIDField,)):
data[field_name] = str(field_value)
continue
if isinstance(field, URLField):
data[field_name] = get_absolute_url_path(field_value)
continue
data[field_name] = field_value
return data
def dehydrate(self, bundle):
"""
Do some customize behaviors for project requires
1. convert all DateTimeField's value to a timestamp value
2. Convert all Media FileField's value to be its absolute url path
"""
for k, v in bundle.data.iteritems():
# convert all datetime/date to timestamp value
if isinstance(v, (datetime, date)):
bundle.data[k] = datetime2timestamp(v)
continue
# return the absolute url path of the media file
if hasattr(bundle.obj, k) and isinstance(getattr(bundle.obj, k),
(FileField, ImageField)):
bundle.data[k] = get_absolute_url_path(v)
continue
return bundle
def dehydrate(self, bundle, exclude_common=True):
"""
Do some customize behaviors for project requires
1. convert all DateTimeField's value to a timestamp value
2. Convert all Media FileField's value to be its absolute url path
3. if exclude_common = True, the api return value will not includes the common fields
"""
bundle = super(BaseModelResource, self).dehydrate(bundle)
for field in bundle.obj._meta.fields:
# convert all datetime/date to timestamp value
# used to exclude common model fields
if exclude_common:
if field.name in BaseModelResource.Meta.excludes:
if field.name in bundle.data:
del bundle.data[field.name]
continue
# used to exclude resource specific exclude fields
if field.name in self._meta.excludes:
if field.name in bundle.data:
del bundle.data[field.name]
continue
field_value = getattr(bundle.obj, field.name)
if not field_value:
continue
if isinstance(field, (DateField, DateTimeField)):
bundle.data[field.name] = datetime2timestamp(field_value)
continue
if isinstance(field, (FileField, ImageField)):
bundle.data[field.name] = get_absolute_url_path(
field_value.url)
continue
return bundle