Python 表单提交时,将变量从views.py传递到forms.py会导致错误
我已经将一些变量从视图传递到表单,以使用它过滤表单中的一些字段。但是当我点击表单中的submit按钮时,它给出了一个错误Python 表单提交时,将变量从views.py传递到forms.py会导致错误,python,django,Python,Django,我已经将一些变量从视图传递到表单,以使用它过滤表单中的一些字段。但是当我点击表单中的submit按钮时,它给出了一个错误 KeyError at /add_ad/mod/ 'cat' 以下是错误的完整回溯: Traceback: File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\handlers\exception.py" in inner 35.
KeyError at /add_ad/mod/
'cat'
以下是错误的完整回溯:
Traceback:
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\handlers\exception.py" in inner
35. response = get_response(request)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\handlers\base.py" in _get_response
128. response = self.process_exception_by_middleware(e, request)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\handlers\base.py" in _get_response
126. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\lito\Desktop\DJ\JEHLUM - Copy - Copy\web_site\views.py" in add_ad_mod
210. add_ad_mod_form = AddAdModForm(request.POST, request.FILES)
File "C:\Users\lito\Desktop\DJ\JEHLUM - Copy - Copy\web_site\forms.py" in __init__
47. current_categ = kwargs.pop('cat')
Exception Type: KeyError at /add_ad/mod/
Exception Value: 'cat'
以下是我在文件中使用的代码:
视图.py
def add_ad_mod(request):
current_user = request.user
current_ip = get_client_ip(request)
selected = Temp.objects.filter(created_by_ip=current_ip).order_by('-created_at')[0]
selected_category = selected.cat
selected_town = selected.town
add_ad_mod_form = AddAdModForm(cat=selected_category, loc=selected_town)
if request.method == 'POST':
add_ad_mod_form = AddAdModForm(request.POST, request.FILES)
if add_ad_mod_form.is_valid():
model_instance = add_ad_mod_form.save(commit=False)
model_instance.created_by = current_user.email
model_instance.category = selected_category
model_instance.town=selected_town
if request.user.is_superuser:
model_instance.is_active = True
else:
model_instance.is_active = False
add_ad_mod_form.save()
return redirect('dashboard')
else:
add_ad_mod_form = AddAdModForm(cat=selected_category, loc=selected_town)
context = {
'add_ad_mod_form': add_ad_mod_form,
'selected_category': selected_category,
'selected_town': selected_town,
}
return render(request, 'add_ad_mod.html', context)
class AddAdModForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
current_categ = kwargs.pop('cat')
current_loc = kwargs.pop('loc')
super(AddAdModForm, self).__init__(*args, **kwargs)
self.fields['sub_category'] = forms.ChoiceField(label="Sniffer", choices=[(x, x) for x in
SubCate.objects.filter(main_category=current_categ)])
self.fields['sub_location'] = forms.MultipleChoiceField (widget=forms.CheckboxSelectMultiple,label="Sniffer", choices=[(x, x) for x in
SubLoc.objects.filter(main_town=current_loc)])
title = forms.CharField(
widget=forms.TextInput(
attrs={
'placeholder': 'Ad Title here',
'style': 'width: 100%; max-width: 800px;'
}
)
)
description = forms.CharField(
widget=forms.Textarea(
attrs={
'placeholder': 'Ad description is here',
'style': 'width: 100%; max-width: 800px;'
}
)
)
image = forms.ImageField(required=True)
image2 = forms.ImageField(required=False)
image3 = forms.ImageField(required=False)
image4 = forms.ImageField(required=False)
image5 = forms.ImageField(required=False)
address = forms.CharField(max_length=100,
widget=forms.Textarea(
attrs={
'placeholder': 'Detailed Address is here ',
'style': 'width: 100%; max-width: 800px;'
}
)
)
class Meta:
model = Item
fields = ['title', 'sub_category', 'price', 'description', 'sub_location', 'address', 'image', 'image2', 'image3', 'image4',
'image5', 'phone']
Forms.py
def add_ad_mod(request):
current_user = request.user
current_ip = get_client_ip(request)
selected = Temp.objects.filter(created_by_ip=current_ip).order_by('-created_at')[0]
selected_category = selected.cat
selected_town = selected.town
add_ad_mod_form = AddAdModForm(cat=selected_category, loc=selected_town)
if request.method == 'POST':
add_ad_mod_form = AddAdModForm(request.POST, request.FILES)
if add_ad_mod_form.is_valid():
model_instance = add_ad_mod_form.save(commit=False)
model_instance.created_by = current_user.email
model_instance.category = selected_category
model_instance.town=selected_town
if request.user.is_superuser:
model_instance.is_active = True
else:
model_instance.is_active = False
add_ad_mod_form.save()
return redirect('dashboard')
else:
add_ad_mod_form = AddAdModForm(cat=selected_category, loc=selected_town)
context = {
'add_ad_mod_form': add_ad_mod_form,
'selected_category': selected_category,
'selected_town': selected_town,
}
return render(request, 'add_ad_mod.html', context)
class AddAdModForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
current_categ = kwargs.pop('cat')
current_loc = kwargs.pop('loc')
super(AddAdModForm, self).__init__(*args, **kwargs)
self.fields['sub_category'] = forms.ChoiceField(label="Sniffer", choices=[(x, x) for x in
SubCate.objects.filter(main_category=current_categ)])
self.fields['sub_location'] = forms.MultipleChoiceField (widget=forms.CheckboxSelectMultiple,label="Sniffer", choices=[(x, x) for x in
SubLoc.objects.filter(main_town=current_loc)])
title = forms.CharField(
widget=forms.TextInput(
attrs={
'placeholder': 'Ad Title here',
'style': 'width: 100%; max-width: 800px;'
}
)
)
description = forms.CharField(
widget=forms.Textarea(
attrs={
'placeholder': 'Ad description is here',
'style': 'width: 100%; max-width: 800px;'
}
)
)
image = forms.ImageField(required=True)
image2 = forms.ImageField(required=False)
image3 = forms.ImageField(required=False)
image4 = forms.ImageField(required=False)
image5 = forms.ImageField(required=False)
address = forms.CharField(max_length=100,
widget=forms.Textarea(
attrs={
'placeholder': 'Detailed Address is here ',
'style': 'width: 100%; max-width: 800px;'
}
)
)
class Meta:
model = Item
fields = ['title', 'sub_category', 'price', 'description', 'sub_location', 'address', 'image', 'image2', 'image3', 'image4',
'image5', 'phone']
我看到错误出现在行current\u categ=kwargs.pop('cat')
中,但我无法找出原因
更新
根据下面的答案,我发现了错误
Traceback:
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\handlers\exception.py" in inner
35. response = get_response(request)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\handlers\base.py" in _get_response
128. response = self.process_exception_by_middleware(e, request)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\core\handlers\base.py" in _get_response
126. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\lito\Desktop\DJ\JEHLUM - Copy - Copy\web_site\views.py" in add_ad_mod
219. add_ad_mod_form.save()
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\forms\models.py" in save
457. self._save_m2m()
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\forms\models.py" in _save_m2m
439. f.save_form_data(self.instance, cleaned_data[f.name])
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\fields\related.py" in save_form_data
1619. getattr(instance, self.attname).set(data)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\fields\related_descriptors.py" in set
969. self.add(*new_objs)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\fields\related_descriptors.py" in add
898. self._add_items(self.source_field_name, self.target_field_name, *objs)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\fields\related_descriptors.py" in _add_items
1045. '%s__in' % target_field_name: new_ids,
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\query.py" in filter
836. return self._filter_or_exclude(False, *args, **kwargs)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\query.py" in _filter_or_exclude
854. clone.query.add_q(Q(*args, **kwargs))
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\sql\query.py" in add_q
1253. clause, _ = self._add_q(q_object, self.used_aliases)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\sql\query.py" in _add_q
1277. split_subq=split_subq,
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\sql\query.py" in build_filter
1215. condition = self.build_lookup(lookups, col, value)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\sql\query.py" in build_lookup
1085. lookup = lookup_class(lhs, rhs)
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\lookups.py" in __init__
18. self.rhs = self.get_prep_lookup()
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\fields\related_lookups.py" in get_prep_lookup
59. self.rhs = [target_field.get_prep_value(v) for v in self.rhs]
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\fields\related_lookups.py" in <listcomp>
59. self.rhs = [target_field.get_prep_value(v) for v in self.rhs]
File "C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site-packages\django\db\models\fields\__init__.py" in get_prep_value
947. return int(value)
Exception Type: ValueError at /add_ad/mod/
Exception Value: invalid literal for int() with base 10: 's'
回溯:
文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\core\handlers\exception.py”位于内部
35响应=获取响应(请求)
获取响应中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\core\handlers\base.py”
128response=self.process\u异常\u由\u中间件(e,请求)
获取响应中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\core\handlers\base.py”
126响应=包装的回调(请求,*回调参数,**回调参数)
文件“C:\Users\lito\Desktop\DJ\JEHLUM-Copy-Copy\web\u site\views.py”位于add\u ad\u mod中
219添加广告修改表单保存()
保存中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\forms\models.py”
457self._save_m2m()
保存m2m中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\forms\models.py”
439f、 保存表单数据(self.instance、已清理的表单数据[f.name])
保存表单数据中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\fields\related.py”
1619getattr(实例,self.attname).set(数据)
集合中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\fields\related\u descriptors.py”
969self.add(*new_objs)
文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\fields\related\u descriptors.py”
898self.\添加\项(self.source\字段\名称、self.target\字段\名称、*objs)
添加项中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\fields\related\u descriptors.py”
1045. '%“%target\u field\u name:new\u id”中的s\u,
过滤器中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\query.py”
836返回self.\u filter\u或\u exclude(False、*args、**kwargs)
文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\query.py”位于\u filter\u或\u exclude
854clone.query.add_q(q(*args,**kwargs))
文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\sql\query.py”
1253子句,self.\u添加(q\u对象,self.used\u别名)
文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\sql\query.py”位于\u add\u q
1277split_subq=split_subq,
内置过滤器中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\sql\query.py”
1215条件=self.build\u查找(查找、列、值)
生成查找中的文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\sql\query.py”
1085lookup=lookup\u类(左、右)
文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\lookups.py”位于\uu init中__
18self.rhs=self.get\u prep\u lookup()
get\u prep\u lookup中的文件“C:\Users\lito\AppData\Local\Programs\Python 37-32\lib\site packages\django\db\models\fields\related\u lookups.py”
59self.rhs=[target_field.get_prep_value(v)for v in self.rhs]
文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\fields\related\u lookups.py”
59self.rhs=[target_field.get_prep_value(v)for v in self.rhs]
文件“C:\Users\lito\AppData\Local\Programs\Python\Python37-32\lib\site packages\django\db\models\fields\\ uuuuuu init\ uuuuuu.py”位于get\u prep\值中
947返回int(值)
异常类型:ValueError位于/add\u ad/mod/
异常值:基数为10的int()的文本无效:“s”
您已经告诉代码需要参数cat
和loc
,但是您只是从GET块中的视图传递它们,而不是从POST块中传递。你需要两次都通过
add_ad_mod_form = AddAdModForm(request.POST, request.FILES, cat=selected_category, loc=selected_town)
(注意,在if
语句之前有一个不必要的额外实例化;您应该删除它。)
编辑正如我在评论中提到的,您不应该对关系使用基本选择字段
self.fields['sub_category'] = forms.ModelChoiceField(label="Sniffer", queryset=SubCate.objects.filter(main_category=current_categ))
self.fields['sub_location'] = forms.ModelMultipleChoiceField(widget=forms.CheckboxSelectMultiple, label="Sniffer", queryset=SubLoc.objects.filter(main_town=current_loc))
您已经告诉代码需要参数
cat
和loc
,但您只是从GET块中的视图传递它们,而不是从POST块传递它们。你需要两次都通过
add_ad_mod_form = AddAdModForm(request.POST, request.FILES, cat=selected_category, loc=selected_town)
(注意,在if
语句之前有一个不必要的额外实例化;您应该删除它。)
编辑正如我在评论中提到的,您不应该对关系使用基本选择字段
self.fields['sub_category'] = forms.ModelChoiceField(label="Sniffer", queryset=SubCate.objects.filter(main_category=current_categ))
self.fields['sub_location'] = forms.ModelMultipleChoiceField(widget=forms.CheckboxSelectMultiple, label="Sniffer", queryset=SubLoc.objects.filter(main_town=current_loc))
在
add\u ad\u mod\u form=AddAdModForm(request.POST,request.FILES)
中,不传递cat
参数。与loc
相同。在add\u ad\u mod\u form=AddAdModForm(request.POST,request.FILES)
中,您不传递cat
参数。与loc
相同。太好了,我没有注意到。但是现在我得到了一个错误invalid literal for int(),以10为基数:“l”
,这对我来说是完全不可理解的!!你需要发布完整的回溯。虽然您可能应该使用表单