Django表单对象没有任何属性'get'

您好，我尝试将表单模板加载到html中时出错。当它加载我找回错误是：Django表单对象没有任何属性'get'

'CleanUpSelectForm' object has no attribute 'get'

HTML失败的部分是在这里：

 <form id="feedback_select" class='hidden' action="{% url 'clean_feedback' %}" method="post" autocomplete="off"> 
     {% csrf_token %} 
     {% for field in forms %} 
      {% include "snippets/simple_form_row.html" with label=field.label_tag val=field|addcss:'profile_field' %} 
     {% endfor %} 
     <div style="text-align:right" class="top-padding"> 
      <button class="mainButton get_feedback">show feedback</button> 
     </div> 
     <hr class="fade-in-out-right"> 
    </form>

形式类是以下内容：

class CleanUpSelectForm(forms.Form): 

def __init__(self, company=None): 
    super(CleanUpSelectForm,self).__init__(self) 

    self.FILTER_TRANSLATIONS = dict(
     test_cycle='test_cycle_id', 
     app_version='question__group__app_id', 
     app_reference='question__group__app__app_reference_id', 
    ) 

    self.NULL_CHOICE = [('', 'Please Select')] 
    self.TC_CHOICES = models.TestCycle.objects.filter(
     id__in=models.Feedback.objects.filter(done=False).values_list('test_cycle_id',flat=True) 
    ) 

    self.RELATED_QUESTIONS = models.Question.objects.filter(
     id__in=models.Feedback.objects.filter(done=False).values_list('question_id',flat=True)) 

    self.RELATED_QUESTION_GROUPS = models.QuestionGroup.objects.filter(
     id__in=self.RELATED_QUESTIONS.values_list('group_id', flat=True)) 

    self.RELATED_APPS = models.App.objects.filter(
     id__in=self.RELATED_QUESTION_GROUPS.values_list('app_id', flat=True)) 

    self.APP_CHOICES = models.AppReference.objects.filter(
     id__in=self.RELATED_APPS.values_list('app_reference_id', flat=True) 
    ).values_list('id','name') 

    if company: 
     self.TC_CHOICES = self.TC_CHOICES.filter(company=company).values_list('id','name') 
    else: 
     self.TC_CHOICES = self.TC_CHOICES.values_list('id','name') 

    self.test_cycle = forms.ChoiceField(choices=self.NULL_CHOICE+list(self.TC_CHOICES), required=False) 
    self.app_reference = forms.ChoiceField(choices=self.NULL_CHOICE+list(self.APP_CHOICES), required=False, 
             widget=forms.Select(attrs={'appref': 
                    'true'}) 
            ) 
    self.app_version = forms.ChoiceField(choices=self.RELATED_APPS.values_list('id', 
                    'version'), required=False, 
             widget=forms.Select(attrs={ 
              'form_display': 'none'}) 
            ) 
    self.fields['test_cycle'] = self.test_cycle

它在.py文件中被称为

context.update({'forms': CleanUpSelectForm()})

如果我删除self.fields['test_cycle'] = self.test_cycle行并替换为self.fields = []，则不会发生该错误，但显然该模板为空。所以我正在寻找正确的方法是在没有任何错误的情况下提供表单域。再次感谢您的帮助，因为我相当卡住！

编辑 - 堆栈跟踪：

Environment: 


Request Method: GET 
Request URL: http://127.0.0.1:8000/clean_feedback/ 

Django Version: 1.7.4 
Python Version: 2.7.6 
Installed Applications: 
('django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.sites', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'django.contrib.humanize', 
'nested_inline', 
'django.contrib.admin', 
'tccore') 
Installed Middleware: 
('django.middleware.common.CommonMiddleware', 
'django.contrib.sessions.middleware.SessionMiddleware', 
'django.middleware.csrf.CsrfViewMiddleware', 
'django.contrib.auth.middleware.AuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.clickjacking.XFrameOptionsMiddleware', 
'django.contrib.auth.middleware.SessionAuthenticationMiddleware') 


Template error: 
In template /Users/stephenharrison/Documents/Repo/TestRocket/tccore/templates/tccore/clean_up.html, error at line 18 
    'CleanUpSelectForm' object has no attribute 'get' 
    8 : {% endblock js %} 


    9 : {% block navs %} 


    10 : <div class="see_layout top_right_menu linked " data-href="{% url 'groundcontrol' %}">Ground control</div> 


    11 : {% endblock %} 


    12 : 


    13 : {% block content %} 


    14 :  {% if forms %} 


    15 :   <form id="feedback_select" class='hidden' action="{% url 'clean_feedback' %}" method="post" autocomplete="off"> 


    16 :    {% csrf_token %} 


    17 :    {% for field in forms %} 


    18 :     {% include "snippets/simple_form_row.html" with label=field.label_tag val=field|addcss:'profile_field' %} 


    19 :    {% endfor %} 


    20 :    <div style="text-align:right" class="top-padding"> 


    21 :     <button class="mainButton get_feedback">show feedback</button> 


    22 :    </div> 


    23 :    <hr class="fade-in-out-right"> 


    24 :   </form> 


    25 :  {% endif %} 


    26 :  <div id="counter"></div> 


    27 :  <div id="cleaner" class="hidden"> 


    28 :   <div id="cleaner_headers"> 


Traceback: 
File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in get_response 
    111.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 
File "/Library/Python/2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view 
    21.     return view_func(request, *args, **kwargs) 
File "/Users/stephenharrison/Documents/Repo/TestRocket/tccore/views/clean_up.py" in clean_feedback 
    167.  return render(request, template, context) 
File "/Library/Python/2.7/site-packages/django/shortcuts.py" in render 
    50.  return HttpResponse(loader.render_to_string(*args, **kwargs), 
File "/Library/Python/2.7/site-packages/django/template/loader.py" in render_to_string 
    178.   return t.render(context_instance) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in render 
    148.    return self._render(context) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in _render 
    142.   return self.nodelist.render(context) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in render 
    844.     bit = self.render_node(node, context) 
File "/Library/Python/2.7/site-packages/django/template/debug.py" in render_node 
    80.    return node.render(context) 
File "/Library/Python/2.7/site-packages/django/template/loader_tags.py" in render 
    126.   return compiled_parent._render(context) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in _render 
    142.   return self.nodelist.render(context) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in render 
    844.     bit = self.render_node(node, context) 
File "/Library/Python/2.7/site-packages/django/template/debug.py" in render_node 
    80.    return node.render(context) 
File "/Library/Python/2.7/site-packages/django/template/defaulttags.py" in render 
    38.   output = self.nodelist.render(context) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in render 
    844.     bit = self.render_node(node, context) 
File "/Library/Python/2.7/site-packages/django/template/debug.py" in render_node 
    80.    return node.render(context) 
File "/Library/Python/2.7/site-packages/django/template/loader_tags.py" in render 
    65.     result = block.nodelist.render(context) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in render 
    844.     bit = self.render_node(node, context) 
File "/Library/Python/2.7/site-packages/django/template/debug.py" in render_node 
    80.    return node.render(context) 
File "/Library/Python/2.7/site-packages/django/template/defaulttags.py" in render 
    312.     return nodelist.render(context) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in render 
    844.     bit = self.render_node(node, context) 
File "/Library/Python/2.7/site-packages/django/template/debug.py" in render_node 
    80.    return node.render(context) 
File "/Library/Python/2.7/site-packages/django/template/defaulttags.py" in render 
    201.        nodelist.append(node.render(context)) 
File "/Library/Python/2.7/site-packages/django/template/loader_tags.py" in render 
    145.     for name, var in six.iteritems(self.extra_context) 
File "/Library/Python/2.7/site-packages/django/template/loader_tags.py" in <dictcomp> 
    145.     for name, var in six.iteritems(self.extra_context) 
File "/Library/Python/2.7/site-packages/django/template/base.py" in resolve 
    624.     new_obj = func(obj, *arg_vals) 
File "/Users/stephenharrison/Documents/Repo/TestRocket/tccore/templatetags/tccore_extras.py" in addcss 
    74.  return field.as_widget(attrs={"class": ' '.join([field.field.widget.attrs.get('class',''), css])}) 
File "/Library/Python/2.7/site-packages/django/forms/forms.py" in as_widget 
    560.   return force_text(widget.render(name, self.value(), attrs=attrs)) 
File "/Library/Python/2.7/site-packages/django/forms/forms.py" in value 
    601.     self.data, self.form.initial.get(self.name, self.field.initial) 
File "/Library/Python/2.7/site-packages/django/forms/forms.py" in data 
    583.   return self.field.widget.value_from_datadict(self.form.data, self.form.files, self.html_name) 
File "/Library/Python/2.7/site-packages/django/forms/widgets.py" in value_from_datadict 
    228.   return data.get(name, None) 

Exception Type: AttributeError at /clean_feedback/ 
Exception Value: 'CleanUpSelectForm' object has no attribute 'get' 
    enter code here

来源

2015-07-13 Steve H

你可以添加* full * stacktrace的错误信息？ – dhke

你不应该尝试在'__init__'方法中将字段添加到表单中...将所需的字段放入类体中，然后只需定制在init方法中需要更改的字段选项和其他字段属性 – Anentropic

你为什么首先定义'self.test_cycle'？似乎应该只是一个局部变量，然后添加到'self.fields'中。（对于其他变量，如TC_CHOICES也是如此。） –

它不（直接）的支持，以在窗体的__init__()添加Django的表单字段。

表单字段应该声明为类属性。 Django（实际上是django.forms.forms.DeclarativeFieldsMetaclass）从__new__()的类属性中选取表单域。表单字段在对象创建之前进行转换，所以如果绕过该机制，行为基本上是未定义的。

如果您需要进行动态选择，使用callable为choices参数：

NULL_CHOICE = [...] 

def get_tc_choices(): 
    return NULL_CHOICE + list(models.TestCycle.objects.filter(
     id__in=models.Feedback.objects.filter(done=False).values_list('test_cycle_id',flat=True) 
    )) 

[...] 
class CleanUpSelectForm(forms.Form): 
    test_cycle = forms.ChoiceField(choices=get_tc_choices, required=False)

来源

2015-07-13 11:02:07 dhke

当选择列表对上下文敏感时（即，您需要根据控制器中发生的某些事情对其进行过滤），这不是一种解决方案。 – Ben

这里的问题的原因：

super(CleanUpSelectForm,self).__init__(self)

你不需要通过self使用时super(..)。所以它应该是：

super(CleanUpSelectForm,self).__init__()

来源

2017-02-19 18:22:45

很好的结果。它帮助了我 – almanegra

Django表单对象没有任何属性'get'

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