mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-11-10 19:56:59 +03:00
Cache default fields per serializer instance for improved performance
This commit is contained in:
parent
a44a94dd6e
commit
2cf0fda2ae
|
@ -103,6 +103,7 @@ class BaseSerializer(Field):
|
|||
self.init_data = data
|
||||
self.init_files = files
|
||||
self.object = instance
|
||||
self.default_fields = self.get_default_fields()
|
||||
|
||||
self._data = None
|
||||
self._files = None
|
||||
|
@ -111,18 +112,18 @@ class BaseSerializer(Field):
|
|||
#####
|
||||
# Methods to determine which fields to use when (de)serializing objects.
|
||||
|
||||
def default_fields(self, nested=False):
|
||||
def get_default_fields(self):
|
||||
"""
|
||||
Return the complete set of default fields for the object, as a dict.
|
||||
"""
|
||||
return {}
|
||||
|
||||
def get_fields(self, nested=False):
|
||||
def get_fields(self):
|
||||
"""
|
||||
Returns the complete set of fields for the object as a dict.
|
||||
|
||||
This will be the set of any explicitly declared fields,
|
||||
plus the set of fields returned by default_fields().
|
||||
plus the set of fields returned by get_default_fields().
|
||||
"""
|
||||
ret = SortedDict()
|
||||
|
||||
|
@ -133,8 +134,7 @@ class BaseSerializer(Field):
|
|||
field.initialize(parent=self, field_name=key)
|
||||
|
||||
# Add in the default fields
|
||||
fields = self.default_fields(nested)
|
||||
for key, val in fields.items():
|
||||
for key, val in self.default_fields.items():
|
||||
if key not in ret:
|
||||
ret[key] = val
|
||||
|
||||
|
@ -181,7 +181,7 @@ class BaseSerializer(Field):
|
|||
ret = self._dict_class()
|
||||
ret.fields = {}
|
||||
|
||||
fields = self.get_fields(nested=bool(self.opts.depth))
|
||||
fields = self.get_fields()
|
||||
for field_name, field in fields.items():
|
||||
key = self.get_field_key(field_name)
|
||||
value = field.field_to_native(obj, field_name)
|
||||
|
@ -194,7 +194,7 @@ class BaseSerializer(Field):
|
|||
Core of deserialization, together with `restore_object`.
|
||||
Converts a dictionary of data into a dictionary of deserialized fields.
|
||||
"""
|
||||
fields = self.get_fields(nested=bool(self.opts.depth))
|
||||
fields = self.get_fields()
|
||||
reverted_data = {}
|
||||
for field_name, field in fields.items():
|
||||
try:
|
||||
|
@ -209,7 +209,7 @@ class BaseSerializer(Field):
|
|||
Run `validate_<fieldname>()` and `validate()` methods on the serializer
|
||||
"""
|
||||
# TODO: refactor this so we're not determining the fields again
|
||||
fields = self.get_fields(nested=bool(self.opts.depth))
|
||||
fields = self.get_fields()
|
||||
|
||||
for field_name, field in fields.items():
|
||||
try:
|
||||
|
@ -332,16 +332,10 @@ class ModelSerializer(Serializer):
|
|||
"""
|
||||
_options_class = ModelSerializerOptions
|
||||
|
||||
def default_fields(self, nested=False):
|
||||
def get_default_fields(self):
|
||||
"""
|
||||
Return all the fields that should be serialized for the model.
|
||||
"""
|
||||
# TODO: Modify this so that it's called on init, and drop
|
||||
# serialize/obj/data arguments.
|
||||
#
|
||||
# We *could* provide a hook for dynamic fields, but
|
||||
# it'd be nice if the default was to generate fields statically
|
||||
# at the point of __init__
|
||||
|
||||
cls = self.opts.model
|
||||
opts = get_concrete_model(cls)._meta
|
||||
|
@ -353,6 +347,7 @@ class ModelSerializer(Serializer):
|
|||
fields += [field for field in opts.many_to_many if field.serialize]
|
||||
|
||||
ret = SortedDict()
|
||||
nested = bool(self.opts.depth)
|
||||
is_pk = True # First field in the list is the pk
|
||||
|
||||
for model_field in fields:
|
||||
|
|
Loading…
Reference in New Issue
Block a user