我有一个Django模型:
class Account(models.Model):
name = models.CharField(max_length=50, blank=True)
number = models.CharField(max_length=16, blank=True)
我想创建一个表单,用户可以从下拉列表中选择现有帐户的电话号码。所以在forms.py
,我有:
class AccountSelectForm(forms.Form):
phone_num_err_msgs = {'required': "You must select a phone number to send this message."}
phone_number = forms.CharField(required=True, error_messages=phone_num_err_msgs)
selected_group_ids = forms.CharField(required=True, widget=forms.HiddenInput)
launch_datetime = forms.CharField(required=True)
在views.py
中,我有:
class AccountSelectView(LoginRequiredMixin, FormView):
template_name = 'campaigns/send.html'
form_class = AccountSelectForm
success_url = reverse_lazy('campaigns:taskq_list')
def get_context_data(self, **kwargs):
data = super(AccountSelectView, self).get_context_data(**kwargs)
data['groups'] = Group.objects.all()
data['campaign'] = Campaign.objects.get(id=self.request.GET['cam_id'])
data['accounts'] = Account.objects.all()
return data
def form_valid(self, form):
# If we insert pdb, we never reach here
#import pdb
#pdb.set_trace()
data = form.cleaned_data
campaign_id = self.request.GET['cam_id']
# ... do other form validation stuff here
return super(ConversationSendView, self).form_valid(form)
在send.html
中,我有:
<form action="" method="post">
{% csrf_token %}
<!-- A couple of other fields to collect user input -->
<div class="form-group">
<p><b>Step 3: Select aphone number to send the message FROM:</b></p>
{{ form.phone_number.errors }}
<select id="phone" style="width: 380px;">
<option value="">--------</option>
{% for a in accounts %}
<option value="{{ a.id }}">{{ a.number }}</option>
{% endfor %}
</select>
<div class="page-btns">
<input type="submit" class="btn btn-primary" value="Send Message to Selected Group(s)" />
</div>
</form>
但是,尽管在提交之前从下拉列表中选择了条目(以及所有其他必需的表单),但我仍然会在HTML页面 [please see the screenshot here]上看到phone_num_err_msgs
。
我有什么遗失的东西吗?哪个(哪个文件)可以导入pdb
并查看它返回错误的原因?我是Django的新手,所以这很可能是一个愚蠢的错误/忽视。感谢先进的答案!
答案 0 :(得分:1)
这里有一些问题。直接原因是您在select标签中缺少name="phone_number "
,因此浏览器不会发送该元素的任何数据。
但目前尚不清楚为什么要手动构建该元素。您应该使用ModelChoiceField,而不是定义CharField并忽略它,它会自动为您提供一个包含所有帐户的选择框。
class AccountSelectForm(forms.Form):
...
phone_number = forms. ModelChoiceField(queryset=Account.objects.all())
...
{{ form.phone_number.errors }}
{{ form.phone_number }}