diff options
Diffstat (limited to 'rest_framework/serializers.py')
| -rw-r--r-- | rest_framework/serializers.py | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py index 2fdc9b9d..95288671 100644 --- a/rest_framework/serializers.py +++ b/rest_framework/serializers.py @@ -449,9 +449,11 @@ class BaseSerializer(WritableField): # If we have a model manager or similar object then we need # to iterate through each instance. - if (self.many and + if ( + self.many and not hasattr(obj, '__iter__') and - is_simple_callable(getattr(obj, 'all', None))): + is_simple_callable(getattr(obj, 'all', None)) + ): obj = obj.all() kwargs = { @@ -601,8 +603,10 @@ class BaseSerializer(WritableField): API schemas for auto-documentation. """ return SortedDict( - [(field_name, field.metadata()) - for field_name, field in six.iteritems(self.fields)] + [ + (field_name, field.metadata()) + for field_name, field in six.iteritems(self.fields) + ] ) @@ -656,8 +660,10 @@ class ModelSerializer(Serializer): """ cls = self.opts.model - assert cls is not None, \ - "Serializer class '%s' is missing 'model' Meta option" % self.__class__.__name__ + assert cls is not None, ( + "Serializer class '%s' is missing 'model' Meta option" % + self.__class__.__name__ + ) opts = cls._meta.concrete_model._meta ret = SortedDict() nested = bool(self.opts.depth) @@ -668,9 +674,9 @@ class ModelSerializer(Serializer): # If model is a child via multitable inheritance, use parent's pk pk_field = pk_field.rel.to._meta.pk - field = self.get_pk_field(pk_field) - if field: - ret[pk_field.name] = field + serializer_pk_field = self.get_pk_field(pk_field) + if serializer_pk_field: + ret[pk_field.name] = serializer_pk_field # Deal with forward relationships forward_rels = [field for field in opts.fields if field.serialize] @@ -739,9 +745,11 @@ class ModelSerializer(Serializer): is_m2m = isinstance(relation.field, models.fields.related.ManyToManyField) - if (is_m2m and + if ( + is_m2m and hasattr(relation.field.rel, 'through') and - not relation.field.rel.through._meta.auto_created): + not relation.field.rel.through._meta.auto_created + ): has_through_model = True if nested: @@ -911,10 +919,12 @@ class ModelSerializer(Serializer): for field_name, field in self.fields.items(): field_name = field.source or field_name - if field_name in exclusions \ - and not field.read_only \ - and (field.required or hasattr(instance, field_name)) \ - and not isinstance(field, Serializer): + if ( + field_name in exclusions + and not field.read_only + and (field.required or hasattr(instance, field_name)) + and not isinstance(field, Serializer) + ): exclusions.remove(field_name) return exclusions |