我正在尝试将views.py中的参数传递给forms.py以创建带ChoiceField
小部件的CheckboxSelectMultiple
但渲染失败。
异常类型:AttributeError异常值:' list'对象没有 属性'得到'。
请你看看下面的内容,并说明我做错了什么:(
提前感谢您的帮助。
forms.py:
class TestSubmitForm(forms.Form):
tests = forms.ChoiceField()
def __init__(self,*args,**kwargs):
self.testList = args[0]
super(TestSubmitForm,self).__init__(*args,**kwargs)
self.fields['tests'].widget = forms.CheckboxSelectMultiple()
self.fields['tests'].choices = self.testList
views.py
def index(request):
tc_obj_form = [("","1"),("","2"),("",3")]
tests = TestSubmitForm(tc_obj_form)
return render(request, 'index.html',{'tests':tests})
的index.html
<form action="." method="POST">
<table >
{% csrf_token %}
{{ tests }}
</table>
<input type="submit" value="Submit"/>
</form>
堆栈跟踪:
Traceback: File "/local/User/demo/web/venv/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
111. response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/local/User/demo/web/apps/Lcloud/views.py" in index
94. return render(request, 'Lcloud/index.html',
...
135. return self.as_table() File "/local/User/demo/web/venv/lib/python2.7/site-packages/django/forms/forms.py" in as_table
257. errors_on_separate_row=False) File "/local/User/demo/web/venv/lib/python2.7/site-packages/django/forms/forms.py" in _html_output
181. top_errors = self.non_field_errors() # Errors that should be displayed above all fields. File "/local/User/demo/web/venv/lib/python2.7/site-packages/django/forms/forms.py" in non_field_errors
283. return self.errors.get(NON_FIELD_ERRORS, self.error_class()) File "/local/User/demo/web/venv/lib/python2.7/site-packages/django/forms/forms.py" in errors
154. self.full_clean() File "/local/User/demo/web/venv/lib/python2.7/site-packages/django/forms/forms.py" in full_clean
353. self._clean_fields() File "/local/User/demo/web/venv/lib/python2.7/site-packages/django/forms/forms.py" in _clean_fields
362. value = field.widget.value_from_datadict(self.data, self.files, self.add_prefix(name)) File "/local/User/demo/web/venv/lib/python2.7/site-packages/django/forms/widgets.py" in value_from_datadict
585. return data.get(name, None)
Exception Type: AttributeError at /Lcloud/ Exception Value: 'list' object has no attribute 'get'
答案 0 :(得分:1)
更改表单的__init__()
,如下所示:
def __init__(self, testList, args,**kwargs):
self.testList = testList
super(TestSubmitForm,self).__init__(*args,**kwargs) # testList not in args!
# ...
问题在于__init__()
forms.Form
(您通过super(...)
调用)期望一个dict
类对象作为其第一个位置参数。通常,如果提供,那将是QueryDict
实例,如request.POST
或某事。类似。