我正在尝试使用django-adaptors导入csv文件，遗憾的是我在此过程中出错。
我创建了我的模型和CSV类：
class depts(models.Model):
iddepts = models.AutoField(primary_key=True)
CustomerID = models.IntegerField(default=0, null=False)
CustomerName = models.CharField(max_length=750, default='none', null=False)
InvoiceID = models.IntegerField(max_length=20, default=0, null=False)
Currency = models.CharField(max_length=3, default='EUR', null=False)
CurrencyRate = models.DecimalField(max_digits=5, decimal_places=2)
PriceWithoutVAT = models.DecimalField(max_digits=20, decimal_places=2)
PriceWithVAT = models.DecimalField(max_digits=20, decimal_places=2)
VAT = models.DecimalField(max_digits=20, decimal_places=2)
CustomerVATID = models.CharField(max_length=35, default='000-000-000-000', null=False)
CustomerAddress = models.CharField(max_length=750, default='none', null=False)
InvoiceBranch = models.IntegerField(max_length=3, default='000', null=False)
InvoiceVATType = models.IntegerField(max_length=1, default='1', null=False)
InvoiceDateCreate = models.DateField(auto_now=True)
InvoiceDateDue = models.DateField(auto_now=True)
InvoiceCodeVAT = models.CharField(max_length=20, default='none', null=False)
PriceWithoutVATStandard = models.DecimalField(max_digits=20, decimal_places=2)
PriceWithVATStandard = models.DecimalField(max_digits=20, decimal_places=2)
VATStandard = models.DecimalField(max_digits=20, decimal_places=2)
AccountVAT = models.CharField(max_length=20, default='none', null=False)
AccountPriceWithoutVAT = models.CharField(max_length=20, default='none', null=False)
AccountPriceWithVAT = models.CharField(max_length=20, default='none', null=False)
class Meta:
verbose_name = "Invoice"
verbose_name_plural = "Invoices"
def __str__(self):
return self.InvoiceID
def __unicode__(self):
return self.InvoiceID
class MyCsvModel(CsvDbModel):
class Meta:
dbModel = depts
delimiter = ";"
has_header = True
我的csv文件如下所示：
CustomerID;CustomerName;InvoiceID;Currency;CurrencyRate;PriceWithoutVAT;PriceWithVAT;VAT;CustomerVATID;CustomerAddress;InvoiceBranch;InvoiceVATType;InvoiceDateCreate;InvoiceDateDue;InvoiceCodeVAT;PriceWithoutVATStandard;PriceWithVATStandard;VATStandard;AccountVAT;AccountPriceWithoutVAT;AccountPriceWithVAT
73269;Good CO;131002919;EUR;1;141.12;173.58;32.46;666-666-11-11;Good street 123;002;1;2013-04-15;2013-04-22;21% ;141.12;173.58;32.46;111-111;111-111-111;111-111-11111
你可以看到我有额外的Field im模型“iddepts”这是主键，在MyCsvModel剂量解决问题中将其排除在外。我在import_data上仍然有错误。
>>>from app.models import MyCsvModel
>>>my_csv_list = MyCsvModel.import_data(data = open("file.csv"))
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/sitepackages/adaptor/model.py", line 197, in import_data
return importer.import_data(data)
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/adaptor/model.py", line 467, in import_data
self.process_line(data, line, lines, line_number, self.csvModel)
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/adaptor/model.py", line 487, in process_line
raise CsvDataException(line_number, error="Number of fields invalid")
CsvDataException: Line 2: Number of fields invalid
提前致谢。
答案 0 :(得分：1)
使用CsvDbModel意味着您的django模型字段和CSV列匹配。您的CSV数据缺少iddepts列。
因此，您需要创建一个django-adapters CsvModel。您需要告诉DateField如何格式化日期。在您的CSV文件中：
'％Y-％间 - ％d'
django-adapters defaults it to：
'％d /％米/％Y'
设置此模型。如果您的Csv模型的字段名称与您的django模型的字段名称不匹配，您可以manage this with the match keyword
from adaptor.model import CsvModel
from adaptor.fields import CharField, IntegerField, DecimalField, DateField
from application.models import depts
class DeptsCsvModel(CsvModel):
CustomerID = IntegerField()
CustomerName = CharField()
InvoiceID = IntegerField()
Currency = CharField()
CurrencyRate = DecimalField()
PriceWithoutVAT = DecimalField()
PriceWithVAT = DecimalField()
VAT = DecimalField()
CustomerVATID = CharField()
CustomerAddress = CharField()
InvoiceBranch = IntegerField()
InvoiceVATType = IntegerField()
InvoiceDateCreate = DateField(**{'format':'%Y-%m-%d'})
InvoiceDateDue = DateField(**{'format':'%Y-%m-%d'})
InvoiceCodeVAT = CharField()
PriceWithoutVATStandard = DecimalField()
PriceWithVATStandard = DecimalField()
VATStandard = DecimalField()
AccountVAT = CharField()
AccountPriceWithoutVAT = CharField()
AccountPriceWithVAT = CharField()
class Meta:
dbModel = depts
delimiter = ";"
has_header = True
使用此模型，您可以使用django shell导入CSV文件。我成功将您的CSV数据导入SQL数据库表。
gottfried@lubuntu-virtual-machine:~/virtualenvs/django-adaptors/soquestion/application$ ../../bin/python ../manage.py shell
Python 2.7.2+ (default, Jul 20 2012, 22:12:53)
[GCC 4.6.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from application.adaptors import DeptsCsvModel
>>> DeptsCsvModel.import_data(data = open('data.csv'))
[<application.adaptors.DeptsCsvModel object at 0x93efa8c>]
自定义选项：您甚至可以在CSV数据中创建与日期格式匹配的自定义字段。
class DeptsDateField(DateField):
"encapsulate specific data properties into a class for use with django-adaptors CsvModel fields"
def __init__(self):
super(DeptsDateField, self).__init__(**{'format':'%Y-%m-%d'})
class DeptsCsvModel(CsvModel):
CustomerID = IntegerField()
CustomerName = CharField()
InvoiceID = IntegerField()
Currency = CharField()
CurrencyRate = DecimalField()
PriceWithoutVAT = DecimalField()
PriceWithVAT = DecimalField()
VAT = DecimalField()
CustomerVATID = CharField()
CustomerAddress = CharField()
InvoiceBranch = IntegerField()
InvoiceVATType = IntegerField()
InvoiceDateCreate = DeptsDateField
InvoiceDateDue = DeptsDateField
InvoiceCodeVAT = CharField()
PriceWithoutVATStandard = DecimalField()
PriceWithVATStandard = DecimalField()
VATStandard = DecimalField()
AccountVAT = CharField()
AccountPriceWithoutVAT = CharField()
AccountPriceWithVAT = CharField()
class Meta:
dbModel = depts
delimiter = ";"
has_header = True