Django导入导出 - 无法使用BinaryField导入模型

Question

我正在尝试从可以为空的模型导入数据BinaryField.数据不包含该字段,我希望在字段中使用空值导入它.如果该字段已存在于给定的数据库中id,则应保持该值不变.

我从fields相应Resource对象的白名单中删除了该字段,并将其添加到exclude黑名单中.但是,我在导入时遇到此错误 - can't pickle memoryview objects.

追溯:

Traceback (most recent call last):
File "/lib/python3.5/site-packages/import_export/resources.py", line 451, in import_row
original = deepcopy(instance)
File "/lib/python3.5/copy.py", line 182, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "/lib/python3.5/copy.py", line 297, in _reconstruct
state = deepcopy(state, memo)
File "/lib/python3.5/copy.py", line 155, in deepcopy
y = copier(x, memo)
File "/lib/python3.5/copy.py", line 243, in _deepcopy_dict
y[deepcopy(key, memo)] = deepcopy(value, memo)
File "/lib/python3.5/copy.py", line 174, in deepcopy
rv = reductor(4)
TypeError: can't pickle memoryview objects

包版本 - django == 1.11,django-import-export == 0.6

编辑:

class ABC(models.Model):
    name = models.CharField('Name', max_length=128, blank=False, null=False)
    binary_field = models.BinaryField('Some name', null=True, blank=True)

class ABCResource(resources.ModelResource):
    class Meta:
        model = ABC
        fields = (
            'id',
            'name',
        )
        import_id_fields = ('id',)
        exclude = ('binary_field',)

class ABCAdmin(ImportExportModelAdmin):
    form = ABCModelForm
    list_display = (
        'id',
        'name',
    )
    exclude = ('binary_field',)
    resource_class = ABCResource

class ABCModelForm(forms.ModelForm):
    class Meta:
        model = ABC
        exclude = ['binary_field']

Answer 1

你添加binary_field了吗ABCModelForm？如果是，那么就会产生问题，因为不可能在 ModelForm 中包含 BinaryField。供参考：二进制字段