我想根据发送请求的用户限制表单的查询集。当表单提交但无效时,我无法让 ModelForm 正确限制字段的查询集。表单重新显示错误文本,但查询集不再受限。这可能是什么原因?
模型.py
from django.db import models
from django.contrib.auth.models import User
class Patient(models.Model):
name = models.CharField(max_length=100)
doctor = models.ForeignKey(User)
def __unicode__(self):
return self.name
class Prescription(models.Model):
name = models.CharField(max_length=100)
patient = models.ForeignKey(Patient)
视图.py
import medical.models as models
import medical.forms as forms
from django.shortcuts import render
def add_form(request):
if request.method == 'POST':
form = forms.PrescriptionForm(request.POST)
if form.is_valid():
form.save()
else:
form = forms.make_prescription_form(request.user)
return render(request, 'add_form.html', {'form': form})
表格.py
import medical.models as models
from django.forms import ModelForm, ModelChoiceField
class PrescriptionForm(ModelForm):
class Meta:
model = models.Prescription
def make_prescription_form(dr):
class PrescriptionForm(ModelForm):
patient = ModelChoiceField(queryset=models.Patient.objects.filter(doctor=dr))
class Meta:
model = models.Prescription
return PrescriptionForm
add_form.html
{{ request.user.first_name }}
{% if form.errors %}
<p style="color: red;">Please correct the error{{ form.errors|pluralize }} below.</p>
{% endif %}
<form action="" method="post">{% csrf_token %}
{{ form }}
<br>
<input type="submit" value="Submit">
</form>
我将不胜感激任何帮助,或提出更好的方法来实现同样的事情!让我知道是否有更多文件会有所帮助。我正在使用 Django 1.3。