“我正在尝试将数据导入到我的一个模型中，但是由于模型具有foreignKey ID而失败。”
我面临同样的问题，但给出的解决方案无法正常工作。 Adding foreignKey widget to django-import-export
在django-import-export中没有有关“导入”的更多解释。
models.py
from django.db import models
from import_export import resources
class City(models.Model):
name = models.CharField(max_length=100)
slug = models.CharField(max_length=100)
id = models.IntegerField(unique=True)
class Zone(models.Model):
city = models.ForeignKey(City, to_field='id')
name = models.CharField(max_length = 100)
我的管理员。py
from import_export.admin import ImportExportModelAdmin
#Class for django-import-export
class ZoneResource(resources.ModelResource):
# city_id = fields.Field()
city_id = fields.Field(
column_name='city_id',
attribute='city_id',
widget=ForeignKeyWidget(City))
class Meta:
model = Zone
fields = ('id', 'city_id', 'cash_limit_applicable', 'LFCL', 'UFCL',)
import_id_fields = ('id',)
import_order = ('id', 'city_id', 'cash_limit_applicable', 'LFCL', 'UFCL',)
export_order = ('id', 'city_id', 'cash_limit_applicable', 'LFCL', 'UFCL',)
skip_unchanged = True
report_skipped = True
def get_instance(self, instance_loader, row):
# Returning False prevents us from looking in the
# database for rows that already exist
print "get instance"
return False
def dehydrate_city_id(self, zone):
print zone, ', hellocity'
if zone is not None:
return zone.city.id # You can get all fields of related model.
else:
return zone
class ZoneAdmin(AdminPermissionMixin, ImportExportModelAdmin):
resource_class = ZoneResource
fields = ['name', 'LFCL', 'UFCL', 'cash_limit_applicable']
list_display = (
'id', 'name', 'city', 'LFCL', 'UFCL', 'floating_cash_submit_limit', 'allowable_cash_limit',
'enabled', 'cash_limit_applicable', 'floating_cash_limit')
def get_import_form(self):
return CustomImportForm
def get_confirm_import_form(self):
return CustomConfirmImportForm
def get_form_kwargs(self, form, *args, **kwargs):
# update kwargs with authors (from CustomImportForm.cleaned_data)
if isinstance(form, CustomImportForm):
if form.is_valid():
print "city form"
city = form.cleaned_data['city']
kwargs.update({'city': city.id})
return kwargs
admin.site.register(Sol, SolAdmin)
form.py
class CityFormMixin(forms.Form):
city = forms.ModelChoiceField(queryset=City.objects.all(),
required=True)
class CustomImportForm(CityFormMixin, ImportForm):
"""Customized ImportForm, with author field required"""
pass
class CustomConfirmImportForm(CityFormMixin, ConfirmImportForm):
"""Customized ConfirmImportForm, with author field required"""
pass
错误
"%s has no %s." % (self.field.model.__name__, self.field.name)
RelatedObjectDoesNotExist: Zone has no city.
谢谢您的帮助。