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POdjango dynamic form ValueError
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  1. POdjango dynamic form ValueError
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    copied!<p>I want to get the select form which can display all the users who have the group name "sale". My definition for my forms is like this:</p> <pre><code>class ArrangeUserForm(forms.Form): def __init__(self, *args, **kwargs): super(ArrangeUserForm, self).__init__(*args, **kwargs) user_choices = [] for user in User.objects.all(): if user.groups.filter(name="sale"): user_choices.append(user.first_name) self.fields['user_field'] = forms.ChoiceField(widget=forms.Select, choices=user_choices) mobile = forms.CharField(widget=forms.TextInput, max_length=11, min_length=11) </code></pre> <p>and my view is like this:</p> <pre><code>class ArrangeUserHandler(View): def get(self, request): form = ArrangeUserForm() return render(request, 'student/student_form.html', {'form': form,}) def post(self, request): pass </code></pre> <p>when I run my code and request for that view, I got the following error:</p> <p>ValueError at /student/arrangeuser/</p> <p>too many values to unpack</p> <p>could anyone told me what's going wrong here?</p> <p>Traceback:</p> <pre><code>request Method: GET Request URL: http://domain/student/arrangeuser/ Django Version: 1.5 Python Version: 2.7.3 Installed Applications: ('django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.staticfiles', 'django.contrib.admin', 'django.contrib.admindocs', 'accounts', 'student', 'order') 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') Template error: In template /home/rogerliu/newproject/crm/templates/student/student_form.html, error at line 7 too many values to unpack 1 : 2 : &lt;form method="post"&gt; 3 : {% csrf_token %} 4 : {% for field in form %} 5 : &lt;div class="fieldWrapper"&gt; 6 : {{ field.errors }} 7 : {{ field.label_tag }}: {{ field }} 8 : &lt;/div&gt; 9 : {% endfor %} 10 : &lt;input type="submit" value="submit" /&gt; 11 : 12 : &lt;/form&gt; 13 : 14 : Traceback: File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response 115. response = callback(request, *callback_args, **callback_kwargs) File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py" in view 68. return self.dispatch(request, *args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/django/views/generic/base.py" in dispatch 86. return handler(request, *args, **kwargs) File "/home/rogerliu/newproject/crm/student/views.py" in get 318. return render(request, 'student/student_form.html', {'form': form,}) File "/usr/local/lib/python2.7/dist-packages/django/shortcuts/__init__.py" in render 53. return HttpResponse(loader.render_to_string(*args, **kwargs), File "/usr/local/lib/python2.7/dist-packages/django/template/loader.py" in render_to_string 177. return t.render(context_instance) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 140. return self._render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render 134. return self.nodelist.render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 830. bit = self.render_node(node, context) File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node 74. return node.render(context) File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render 188. nodelist.append(node.render(context)) File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render 87. output = force_text(output) File "/usr/local/lib/python2.7/dist-packages/django/utils/encoding.py" in force_text 99. s = s.__unicode__() File "/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in __str__ 411. return self.as_widget() File "/usr/local/lib/python2.7/dist-packages/django/forms/forms.py" in as_widget 458. return widget.render(name, self.value(), attrs=attrs) File "/usr/local/lib/python2.7/dist-packages/django/forms/widgets.py" in render 555. options = self.render_options(choices, [value]) File "/usr/local/lib/python2.7/dist-packages/django/forms/widgets.py" in render_options 579. for option_value, option_label in chain(self.choices, choices): Exception Type: ValueError at /student/arrangeuser/ Exception Value: too many values to unpack </code></pre> <p>~ </p>
 

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