Django loaddata 错误

6 投票
2 回答
15908 浏览
提问于 2025-04-15 16:53

我在应用程序目录下创建了一个“fixtures”文件夹,并把data1.json放在里面。

这个文件里包含了以下内容:

[{"firm_url": "http://www.graychase.com/kadam", "firm_name": "Gray & Chase", "first": " Karin ", "last": "Adam", "school": "Ernst Moritz Arndt University Greifswald",  "year_graduated": " 2004"} ]

在命令行中,我切换到应用程序目录,然后

django-admin.py loaddata data1.json

但是我遇到了这个错误

Installing json fixture 'data1' from
'C:\Users\A\Documents\Projects\Django\sw2\wkw2\fixtures'.
Problem installing fixture
'C:\Users\A\Documents\Projects\Django\sw2\wkw2\fixtures\data1.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 76, in Deserializer
Model = _get_model(d["model"])
KeyError: 'model'

我哪里做错了呢?

编辑:

我修正了json格式:

[
    {
        "pk": 1, 
        "model": "wkw2.Lawyer", 
        "fields": {
            "school": "The George Washington University Law School", 
            "last": "Babas", 
            "firm_url": "http://www.graychase.com/babbas", 
            "year_graduated": "2005", 
            "firm_name": "Gray & Chase", 
            "first": "Amr A"
        }
    }
]

但是现在我得到了一个验证错误:这个值必须是一个整数。有没有办法通过行号找出是什么导致了这个错误?只有“pk”是一个整数。

Problem installing fixture 'C:\~\sw2\wkw2\fixtures\csvtest1.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_field(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.

2 个回答

3

看起来问题出在你创建的这个数据文件上。以下几点可能会导致问题:

  • 在创建数据文件后更改了数据库的结构,然后再把这个数据文件加载到新的结构中。
  • 手动修改了数据文件的内容。

你是用 manage.py dumpdata 命令创建这个数据文件的吗?

12

看起来你没有正确地定义你的数据准备工具(fixtures)。可以看看这个Django文档。你需要先定义你要加载的模型,然后像这样定义字段:

 [
  {
    "model": "myapp.person",
    "pk": 1,
    "fields": {
      "first_name": "John",
      "last_name": "Lennon"
    }
  },
  {
    "model": "myapp.person",
    "pk": 2,
    "fields": {
      "first_name": "Paul",
      "last_name": "McCartney"
    }
  }
]

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