Commit 278dad5b authored by Nick Sandford's avatar Nick Sandford
Browse files

Fixed #19746 -- Allow deserialization of pk-less data

parent 5a3d9490

django/core/serializers/python.py

+1 −1
Original line number Diff line number Diff line
@@ -88,7 +88,7 @@ def Deserializer(object_list, **options): 
    for d in object_list:

        # Look up the model and starting build a dict of data for it.

        Model = _get_model(d["model"])

        data = {Model._meta.pk.attname: Model._meta.pk.to_python(d["pk"])}

        data = {Model._meta.pk.attname: Model._meta.pk.to_python(d.get("pk", None))}

        m2m_data = {}

        model_fields = Model._meta.get_all_field_names()

docs/topics/serialization.txt

+10 −0
Original line number Diff line number Diff line
@@ -117,6 +117,16 @@ object and any associated relationship data. 


Calling ``DeserializedObject.save()`` saves the object to the database.



.. note::



    If the ``pk`` attribute in the serialized data doesn't exist or is

    null, a new instance will be saved to the database.



.. versionchanged:: 1.6



In previous versions of Django, the ``pk`` attribute had to be present

on the serialized data or a ``DeserializationError`` would be raised.



This ensures that deserializing is a non-destructive operation even if the

data in your serialized representation doesn't match what's currently in the

database. Usually, working with these ``DeserializedObject`` instances looks

tests/modeltests/serializers/tests.py

+16 −2
Original line number Diff line number Diff line
@@ -255,7 +255,7 @@ class SerializersTestBase(object): 
        for obj in deserial_objs:

            self.assertFalse(obj.object.id)

            obj.save()

        self.assertEqual(Category.objects.all().count(), 4)

        self.assertEqual(Category.objects.all().count(), 5)





class SerializersTransactionTestBase(object):
@@ -290,6 +290,9 @@ class XmlSerializerTestCase(SerializersTestBase, TestCase): 
    <object model="serializers.category">

        <field type="CharField" name="name">Reference</field>

    </object>

    <object model="serializers.category">

        <field type="CharField" name="name">Non-fiction</field>

    </object>

</django-objects>"""



    @staticmethod
@@ -351,7 +354,15 @@ class XmlSerializerTransactionTestCase(SerializersTransactionTestBase, Transacti 


class JsonSerializerTestCase(SerializersTestBase, TestCase):

    serializer_name = "json"

    pkless_str = """[{"pk": null, "model": "serializers.category", "fields": {"name": "Reference"}}]"""

    pkless_str = """[

    {

        "pk": null,

        "model": "serializers.category",

        "fields": {"name": "Reference"}

    }, {

        "model": "serializers.category",

        "fields": {"name": "Non-fiction"}

    }]"""



    @staticmethod

    def _validate_output(serial_str):
@@ -433,6 +444,9 @@ else: 
        pkless_str = """- fields:

    name: Reference

  pk: null

  model: serializers.category

- fields:

    name: Non-fiction

  model: serializers.category"""



        @staticmethod