Django loaddata ValidationError [英] Django loaddata ValidationError
问题描述
这个线程太混乱了（对我来说），所以我再次问这个问题。我不能使原始问题中提到的csv2json.py脚本工作。我只是想找到一种方法来导入数据到sqlite3数据库。
This thread got too confusing (for me) so I am asking the question again. I could not make the csv2json.py script mentioned in the original question work. I am just trying to find a way to import data to sqlite3 database.
这是我使用的模型：
from django.db import models
class School(models.Model):
school = models.CharField(max_length=300)
def __unicode__(self):
return self.school
class Lawyer(models.Model):
firm_url = models.URLField('Bio', max_length=200)
firm_name = models.CharField('Firm', max_length=100)
first = models.CharField('First Name', max_length=50)
last = models.CharField('Last Name', max_length=50)
year_graduated = models.IntegerField('Year graduated')
school = models.CharField(max_length=300)
school = models.ForeignKey(School)
class Meta:
ordering = ('?',)
def __unicode__(self):
return self.first
（稍后我会修复重复的学校。）
(I'll fix the duplicate "school" later.)
我有这个data1.csv文件： / p>
I have this data1.csv file:
pk,firm_url,firm_name,first,last,school,year_graduated
1,http://www.graychase.com/babbas, Gray & Chase, Amr A, Babbas, The George Washington University Law School, 2005
pk，然后根据脚本的需要手动输入1.
I have to put in "pk" and 1 manually as required by the script.
然后，我运行脚本，得到data1.csv.json文件：
Then, I run the script and I get the data1.csv.json file:
[
{
"pk": 1,
"model": "wkw2.Lawyer",
"fields": {
"school": "The George Washington University Law School",
"last": "Babbas",
"firm_url": "http://www.graychase.com/babbas",
"year_graduated": "2005",
"firm_name": "Gray & Chase",
"first": "Amr A"
}
}
]
我将此文件放在fixtures文件夹中app目录并运行 manage.py loaddata data1.csv.json
and I get the error
Installing json fixture 'data1.csv' from 'C:\~\Django\sw2\wkw2\fixtures'.
Problem installing fixture 'C:\~\Django\sw2\wkw2\fixtures\data1.csv.json': Traceback (most recent call last):
File "C:\Python26\Lib\site-packages\django\core\management\commands\loaddata.py", line 150, in handle for obj in objects:
File "C:\Python26\lib\site-packages\django\core\serializers\json.py", line 41, in Deserializer for obj in PythonDeserializer(simplejson.load(stream)):
File "C:\Python26\lib\site-packages\django\core\serializers\python.py", line 95, in Deserializer data[field.attname] = field.rel.to._meta.get_fie(field.rel.field_name).to_python(field_value)
File "C:\Python26\lib\site-packages\django\db\models\fields\__init__.py", line 356, in to_python_("This value must be an integer."))
ValidationError: This value must be an integer.
当我用脚本注释掉脚本中的两行时，我得到这个错误信息： / p>
When I comment out the two lines in the script with pk in them I get this error message:
Installing json fixture 'data1.csv' from 'C:\~\Django\sw2\wkw2\fixtures'.
Problem installing fixture 'C:\Users\A\Documents\Projects\Django\sw2\wkw2\fixtures\data1.csv.json': Traceback (most recent call last):
File "C:\Python26\Lib\site-packages\django\core\management\commands\loaddata.py", line 150, in handle for obj in objects:
File "C:\Python26\lib\site-packages\django\core\serializers\json.py", line 41, in Deserializer for obj in PythonDeserializer(simplejson.load(stream)):
File "C:\Python26\lib\site-packages\django\core\serializers\python.py", line 77, in Deserializer data = {Model._meta.pk.attname : Model._meta.pk.to_pytho(["pk"])}
KeyError: 'pk'
我做错了什么？
编辑：
我取出了一年的报价使它成为一个整数，但我仍然有同样的ValidationError：
I took out the quotes around the year to make it an integer but I still got the same ValidationError:
...
"year_graduated": 2005,
...
推荐答案
（稍后我会修复重复的school。）
(I'll fix the duplicate "school" later.)
其实，这是你的问题。学校作为外键的第二个定义将要求它是一个整数，因此错误。
Actually, that is your problem. The second definition of school as a foreign key will require it to be an integer, thus the error.
您可以通过转储表的模式来确认这一点。 p>
You can confirm this by dumping the schema of your table with
sqlite3 < database-file> '.schema wkw2_Lawyer'
sqlite3 <database-file> '.schema wkw2_Lawyer'
这篇关于Django loaddata ValidationError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
