class CustomerForm(forms.ModelForm):
class Meta:
model = models.Customer
fields = '__all__'
error_messages = {
'qq': {'required': '不能为空'},
'course': {'required': '不能为空'}
}
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
for field_name, field in self.fields.items(): # self.fields是一个OrderedDict字典类型,
# print(self.fields) # OrderedDict([('qq', <django.forms.fields.CharField object at 0x0000022EB2AB2F10>)]
if not isinstance(field, MultiSelectFormField): # 判断field是不是MultiSelectFormField的一个类对象
field.widget.attrs.update({'class': 'form-control'}) # field(对象).widget(属性).attrs(属性).update(方法)
if isinstance(field, DateField):
field.widget.attrs.update({'type': 'date'})
def add_edit_customer(request, cid=None):
label = '编辑客户' if cid else '添加客户'
customer_obj = models.Customer.objects.filter(pk=cid).first()
if request.method == 'GET':
customer_form = CustomerForm(instance=customer_obj) #instance= Customer查到的实列对象
return render(request, 'saleshtml/edit_customer.html', {'customer_form': customer_form, 'label': label})
else:
customer_form = CustomerForm(request.POST, instance=customer_obj)
if customer_form.is_valid():
customer_form.save()
return redirect('customers')
else:
return render(request, 'saleshtml/edit_customer.html', {'customer_form': customer_form, 'label': label})
网页:
{% block Starter_Page %}
{{ label }}
{% endblock %}
<form action="" class="form-horizontal" method="post" novalidate="novalidate">
{% csrf_token %}
{% for field in customer_form %}
<div class="form-group">
<label for="{{ field.id_for_label }}" class="col-sm-2 control-label">{{ field.label }}</label>
<div class="col-sm-6">
{{ field }}
</div>
<div class="col-sm-4">
{{ field.errors.0 }}
</div>
</div>
{% endfor %}
<button class="btn btn-primary">提交</button>
</form>
forms.ModelChoiceField等from框显示指定的查询：
class ConsultRecordForm(forms.ModelForm):
class Meta:
model = models.ConsultRecord # 指定对应的model里的表
fields = '__all__' # 指定字段（ConsultRecord中）
exclude = ['delete_status', ] # 排除某个字段
"""
ModelForm在创建字段时，其中某些查询到多条数据的form会自动创建一个queryset属性，并查询出所有对应表的数据，例如默认生成：
test = forms.ModelChoiceField(
queryset=models.ConsultRecord.objects.all()
)
想要显示指定的查询数据，可以显示的给属性queryset赋值 ↓↓↓↓↓
"""
def __init__(self, request, *args, **kwargs):
super().__init__(*args, **kwargs)
for field_name, field in self.fields.items():
# field_name:字段名，field:类对象
# field_name:customer
# field: <django.forms.models.ModelChoiceField object at 0x000001A706C61970>
# field_type: <class 'django.forms.models.ModelChoiceField'>
field.widget.attrs.update({'class': 'form-control'})
if field_name == 'customer':
field.queryset = models.Customer.objects.filter(consultant=request.user_obj)
