Django 模型中的验证错误
ValidationError in Django Model
我将 Test 模型定义为：
class Test(models.Model):
name = models.BinaryField(blank=False)
time = models.TimeField()
# one test case has many tests
testcase = models.ForeignKey(TestCase)
def __str__(self):
return self.name
当我尝试解析 xml 文件以创建模型对象时，我有以下方法：
def add_test(testcase, obj):
kwargs = {
'name': "",
'time': None,
}
status = 1
# create the test object
for k, v in obj.iteritems():
if k == '@name':
kwargs['name'] = v if v is not None else ""
elif k == '@time':
kwargs['time'] = v
print kwargs
test = Test(testcase=testcase, **kwargs)
test.save()
那里，testcase是TestCase模型的对象。 kwargs 有正确的输入：
{'name': u'runTest', 'time': u'36.332'}
但是，当我调用上述函数时，我得到：
Traceback (most recent call last):
File "dbsync.py", line 131, in <module>
add_testsuite("scale")
File "dbsync.py", line 55, in add_testsuite
add_testcases(testsuite, testcases)
File "dbsync.py", line 87, in add_testcases
status = add_test(testcase_obj, testcase)
File "dbsync.py", line 103, in add_test
test.save()
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 710, in save
force_update=force_update, update_fields=update_fields)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 738, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 822, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 861, in _do_insert
using=using, raw=raw)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/manager.py", line 127, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 920, in _insert
return query.get_compiler(using=using).execute_sql(return_id)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 970, in execute_sql
for sql, params in self.as_sql():
File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 928, in as_sql
for obj in self.query.objs
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 710, in get_db_prep_save
prepared=False)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 2293, in get_db_prep_value
value = self.get_prep_value(value)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 2288, in get_prep_value
return self.to_python(value)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 2275, in to_python
params={'value': value},
django.core.exceptions.ValidationError
我不太明白那里发生了什么……有什么线索吗？
要完成这项工作，您必须将字符串转换为 datetime.time。
kwargs['time'] = datetime.datetime.strptime(v, 'YOUR_TIME_FORMAT').time()
将YOUR_TIME_FORMAT替换为您输入的时间格式。
它不是在抱怨你传递变量的方式，它是在引发一个 ValidationError 我有一种有趣的感觉，它缺少回溯的最后一行，这会告诉我们你的错误是什么值。
我没有测试 BinaryField，但是 TimeField 正在抱怨你的价值。我没有测试 BinaryField，但只查看 TimeField，显示以下内容：
File "<console>", line 1, in <module>
File "/home/paco/Projects/sandeepbox/Whosebug/bla/bla/field_validation.py", line 16, in <module>
print a.is_valid()
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/forms.py", line 184, in is_valid
return self.is_bound and not self.errors
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/forms.py", line 176, in errors
self.full_clean()
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/forms.py", line 392, in full_clean
self._clean_fields()
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/forms.py", line 407, in _clean_fields
value = field.clean(value)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/fields.py", line 162, in clean
value = self.to_python(value)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/fields.py", line 474, in to_python
return super(TimeField, self).to_python(value)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/fields.py", line 423, in to_python
for format in self.input_formats:
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/functional.py", line 136, in __wrapper__
res = func(*self.__args, **self.__kw)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/formats.py", line 110, in get_format
for module in get_format_modules(lang):
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/formats.py", line 82, in get_format_modules
modules = _format_modules_cache.setdefault(lang, list(iter_format_modules(lang, settings.FORMAT_MODULE_PATH)))
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/formats.py", line 51, in iter_format_modules
if not check_for_language(lang):
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/translation/__init__.py", line 181, in check_for_language
return _trans.check_for_language(lang_code)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/lru_cache.py", line 125, in wrapper
result = user_function(*args, **kwds)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 409, in check_for_language
if not language_code_re.search(lang_code):
TypeError: expected string or buffer
使用以下代码（不需要模型显示验证）：
from django import forms
class Test(forms.Form):
time = forms.TimeField()
def __str__(self):
return self.name
kwargs = {'time': u'36.332'}
a = Test(kwargs)
print a.is_valid()
您需要这样传递数据：
import datetime
from django import forms
class Test(forms.Form):
time = forms.TimeField()
def __str__(self):
return self.name
kwargs = {'time': datetime.datetime.now().time()}
a = Test(kwargs)
print a.is_valid()
代码，这次，实际上打印了 True
我将 Test 模型定义为：
class Test(models.Model):
name = models.BinaryField(blank=False)
time = models.TimeField()
# one test case has many tests
testcase = models.ForeignKey(TestCase)
def __str__(self):
return self.name
当我尝试解析 xml 文件以创建模型对象时，我有以下方法：
def add_test(testcase, obj):
kwargs = {
'name': "",
'time': None,
}
status = 1
# create the test object
for k, v in obj.iteritems():
if k == '@name':
kwargs['name'] = v if v is not None else ""
elif k == '@time':
kwargs['time'] = v
print kwargs
test = Test(testcase=testcase, **kwargs)
test.save()
那里，testcase是TestCase模型的对象。 kwargs 有正确的输入：
{'name': u'runTest', 'time': u'36.332'}
但是，当我调用上述函数时，我得到：
Traceback (most recent call last):
File "dbsync.py", line 131, in <module>
add_testsuite("scale")
File "dbsync.py", line 55, in add_testsuite
add_testcases(testsuite, testcases)
File "dbsync.py", line 87, in add_testcases
status = add_test(testcase_obj, testcase)
File "dbsync.py", line 103, in add_test
test.save()
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 710, in save
force_update=force_update, update_fields=update_fields)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 738, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 822, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 861, in _do_insert
using=using, raw=raw)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/manager.py", line 127, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 920, in _insert
return query.get_compiler(using=using).execute_sql(return_id)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 970, in execute_sql
for sql, params in self.as_sql():
File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 928, in as_sql
for obj in self.query.objs
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 710, in get_db_prep_save
prepared=False)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 2293, in get_db_prep_value
value = self.get_prep_value(value)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 2288, in get_prep_value
return self.to_python(value)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 2275, in to_python
params={'value': value},
django.core.exceptions.ValidationError
我不太明白那里发生了什么……有什么线索吗？
要完成这项工作，您必须将字符串转换为 datetime.time。
kwargs['time'] = datetime.datetime.strptime(v, 'YOUR_TIME_FORMAT').time()
将YOUR_TIME_FORMAT替换为您输入的时间格式。
它不是在抱怨你传递变量的方式，它是在引发一个 ValidationError 我有一种有趣的感觉，它缺少回溯的最后一行，这会告诉我们你的错误是什么值。
我没有测试 BinaryField，但是 TimeField 正在抱怨你的价值。我没有测试 BinaryField，但只查看 TimeField，显示以下内容：
File "<console>", line 1, in <module>
File "/home/paco/Projects/sandeepbox/Whosebug/bla/bla/field_validation.py", line 16, in <module>
print a.is_valid()
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/forms.py", line 184, in is_valid
return self.is_bound and not self.errors
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/forms.py", line 176, in errors
self.full_clean()
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/forms.py", line 392, in full_clean
self._clean_fields()
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/forms.py", line 407, in _clean_fields
value = field.clean(value)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/fields.py", line 162, in clean
value = self.to_python(value)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/fields.py", line 474, in to_python
return super(TimeField, self).to_python(value)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/forms/fields.py", line 423, in to_python
for format in self.input_formats:
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/functional.py", line 136, in __wrapper__
res = func(*self.__args, **self.__kw)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/formats.py", line 110, in get_format
for module in get_format_modules(lang):
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/formats.py", line 82, in get_format_modules
modules = _format_modules_cache.setdefault(lang, list(iter_format_modules(lang, settings.FORMAT_MODULE_PATH)))
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/formats.py", line 51, in iter_format_modules
if not check_for_language(lang):
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/translation/__init__.py", line 181, in check_for_language
return _trans.check_for_language(lang_code)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/lru_cache.py", line 125, in wrapper
result = user_function(*args, **kwds)
File "/home/paco/.virtualenvs/berou/local/lib/python2.7/site-packages/django/utils/translation/trans_real.py", line 409, in check_for_language
if not language_code_re.search(lang_code):
TypeError: expected string or buffer
使用以下代码（不需要模型显示验证）：
from django import forms
class Test(forms.Form):
time = forms.TimeField()
def __str__(self):
return self.name
kwargs = {'time': u'36.332'}
a = Test(kwargs)
print a.is_valid()
您需要这样传递数据：
import datetime
from django import forms
class Test(forms.Form):
time = forms.TimeField()
def __str__(self):
return self.name
kwargs = {'time': datetime.datetime.now().time()}
a = Test(kwargs)
print a.is_valid()
代码，这次，实际上打印了 True