当将自动填充字段添加到模型窗体时，'list'对象没有属性'queryset'错误 [英] 'list' object has no attribute 'queryset' error when adding a autocomplete field to a model-form

问题描述

但是，一旦我为字段projektnummer添加了自动完成的小部件， p>

 'projektnummer'：autocomplete.ModelSelect2（url ='output：projekt-form-autocomplete'），
  

我得到一个有线的模板错误我无法理解。你有什么想法可以在这里做吗？

非常感谢！ ：

错误信息：

  / output / create中的AttributeError / 
'list'对象没有属性'queryset'
请求方法：GET 
请求URL：http://127.0.0.1:8000/output/create/ 
 Django版本：1.8.7 
异常类型：AttributeError 
异常值：
'list'对象没有属性'queryset'
 
模板渲染时出错
 
在模板/home/bjoern/Developement/Django/Outputmeldetool/venv_outputmeldetool/lib/python3.5/site-packages/crispy_forms/templates/bootstrap3/field.html中，错误在第28行
 
 28 {％if field | is_checkbox and form_show_labels％} 
  

forms.py

  class KombiPublikationForm（forms.ModelForm）：
 
 typtyp = forms.ModelChoiceField（label ='Vorauswahl Outputtyp'，required = False， 
 queryset = KombiPublikationsTypTyp.objects.exclude（id__in = EXCLUDED_TYPTYP）
 ）
 
 class Meta：
 model = KombiPublikation 
 exclude = ['pub_sprache'] 
 widgets = {
'freigabe'：DateTimePicker（options = format：YYYY-MM-DD HH：mm，'sideBySide'：True}），
'typid'：autocomplete.ModelSelect2（url ='output：typ-autocomplete'，forward = ['typtyp ']），
 #adding以下行会生成错误：
'projektnummer'：autocomplete.ModelSelect2（url ='output：projekt-form-autocomplete'），
'monat'：forms .NumberInput（），
} 
 
 
 
 def __init __（self，* args，** kwargs）：
 super（KombiPublikationForm，self）。 __init __（* args，** kwargs）
 
 self.helper = FormHelper（）
 self.helper.help_text_inline = True 
 self.helper.form_tag = False 
 self.helper.layout =布局（
 #a很多布局的东西在这里
 ）
  

编辑：

我得到非常相同的错误消息与减少的测试形式没有酥脆的形式。只是简单的模型形式和一个自动完成的小部件。所以似乎没有发现脆弱的形式，但与自动完成小部件相关。

  class TestPublikationForm（forms.ModelForm）：
 class Meta：
 model = KombiPublikation 
 exclude = ['pub_sprache'] 
 widgets = {
'projektnummer'：autocomplete.ModelSelect2（url ='output：projekt- form-autocomplete'），
} 
  

template.html

  {{form}} 
  

错误：

 异常值：'list'对象没有属性'queryset'
  

解决方案

在应用于django-taggit时，我有同样的问题。我将窗体的窗口小部件更改为ListSelect2或TagSelect2。然后它工作。

  class TestPublikationForm（forms.ModelForm）：
 class Meta：
 model = KombiPublikation 
 exclude = ['pub_sprache'] 
 widgets = {
'projektnummer'：autocomplete.ListSelect2（url ='output：projekt-form-autocomplete'），
} 
  

您可以从Select2小部件实现模块中找到更多资源：
http://django-autocomplete-light.readthedocs.io/en/master/api .html＃module-dal.widgets

I want to add an another autocomplete field to my model.form.

However, as soon as I add the autocomplete widget for the field "projektnummer"

'projektnummer': autocomplete.ModelSelect2(url='output:projekt-form-autocomplete'),

I get an wired template error I cannot make sense of. Do you have some ideas what I can do here?

Thank you very much! :)

error message:

AttributeError at /output/create/
'list' object has no attribute 'queryset'
Request Method: GET
Request URL:    http://127.0.0.1:8000/output/create/
Django Version: 1.8.7
Exception Type: AttributeError
Exception Value:    
'list' object has no attribute 'queryset'

Error during template rendering

In template /home/bjoern/Developement/Django/Outputmeldetool/venv_outputmeldetool/lib/python3.5/site-packages/crispy_forms/templates/bootstrap3/field.html, error at line 28

28 {% if field|is_checkbox and form_show_labels %}

forms.py

class KombiPublikationForm(forms.ModelForm):

    typtyp = forms.ModelChoiceField(label='Vorauswahl Outputtyp', required = False,
                                    queryset=KombiPublikationsTypTyp.objects.exclude(id__in=EXCLUDED_TYPTYP)
                                    )

    class Meta:
        model = KombiPublikation
        exclude = ['pub_sprache']
        widgets = {
            'freigabe': DateTimePicker(options={"format": "YYYY-MM-DD HH:mm", 'sideBySide': True}),
            'typid': autocomplete.ModelSelect2(url='output:typ-autocomplete', forward=['typtyp']),
#adding following line generates the error:
            'projektnummer': autocomplete.ModelSelect2(url='output:projekt-form-autocomplete'),
            'monat': forms.NumberInput(),
        }



    def __init__(self, *args, **kwargs):
        super(KombiPublikationForm, self).__init__(*args, **kwargs)

        self.helper = FormHelper()
        self.helper.help_text_inline = True
        self.helper.form_tag = False
        self.helper.layout = Layout(
           #a lot of layout stuff is here
            )

edit:

I get the very same error message with a reduced test form without crispy forms. Just the plain model-form and the one autocomplete widget. So it seems to be unreleated to crispy forms, but related to the autocomplete widget.

class TestPublikationForm(forms.ModelForm):
    class Meta:
        model = KombiPublikation
        exclude = ['pub_sprache']
        widgets = {
            'projektnummer': autocomplete.ModelSelect2(url='output:projekt-form-autocomplete'),
    }

template.html

{{ form }}

error:

 Exception Value: 'list' object has no attribute 'queryset'

解决方案

I had same issue when applying to django-taggit. I changed form's widgets to ListSelect2 or TagSelect2. And then it works.

class TestPublikationForm(forms.ModelForm):
class Meta:
    model = KombiPublikation
    exclude = ['pub_sprache']
    widgets = {
        'projektnummer': autocomplete.ListSelect2(url='output:projekt-form-autocomplete'),
}

You can find more resources from 'Select2 widget implementation module.' : http://django-autocomplete-light.readthedocs.io/en/master/api.html#module-dal.widgets

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