发生了一些非常奇怪的事情，我在forms.py中构建了一个MultipleChoiceField，它正在呈现为普通列表。我无法显示复选框。我希望有人可以发现我可能出错的地方。
forms.py
from django import forms
from . import models
from behaviour.models import Interventions
class IncidentForm(forms.Form):
def __init__(self,*args,**kwargs):
self.request = kwargs.pop('request')
super(IncidentForm,self).__init__(*args, **kwargs)
intervention_set = Interventions.objects.filter(schoolid_id = self.request)
intervention_choice = []
for intervention in intervention_set:
intervention_choice.append((intervention.pk, intervention.name))
self.fields['intervention'].choices = intervention_choice
intervention = forms.MultipleChoiceField(label='Intervention', choices=(), widget=forms.CheckboxSelectMultiple(), required=True,)
incident.html
<div>
<label class="control-label">{% trans 'Intervention' %}</label><br />
{{ form.intervention }}
<small class="form-control-feedback"> {{ form.intervention.errors }} </small>
</div>
HTML输出
<div>
<label class="control-label">Intervention</label><br>
<ul id="id_intervention">
<li><label for="id_intervention_0"><input type="checkbox" name="intervention" value="3" id="id_intervention_0">
Communicate verbally with Parent</label>
</li>
<li><label for="id_intervention_1"><input type="checkbox" name="intervention" value="2" id="id_intervention_1">
Non-verbal signal</label>
</li>
<li><label for="id_intervention_2"><input type="checkbox" name="intervention" value="1" id="id_intervention_2">
Spoke with Student</label>
</li>
</ul>
<small class="form-control-feedback"> </small>
</div>
