常用選擇插件
# 單radio府树,值為字符串
# user = fields.CharField(
# initial=2,
# widget=widgets.RadioSelect(choices=((1,'上海'),(2,'北京'),))
# )
# 單radio钻哩,值為字符串
# user = fields.ChoiceField(
# choices=((1, '上海'), (2, '北京'),),
# initial=2,
# widget=widgets.RadioSelect
# )
# 單select,值為字符串
# user = fields.CharField(
# initial=2,
# widget=widgets.Select(choices=((1,'上海'),(2,'北京'),))
# )
# 單select,值為字符串
# user = fields.ChoiceField(
# choices=((1, '上海'), (2, '北京'),),
# initial=2,
# widget=widgets.Select
# )
# 多選select敷扫,值為列表
# user = fields.MultipleChoiceField(
# choices=((1,'上海'),(2,'北京'),),
# initial=[1,],
# widget=widgets.SelectMultiple
# )
# 單checkbox
# user = fields.CharField(
# widget=widgets.CheckboxInput()
# )
# 多選checkbox,值為列表
# user = fields.MultipleChoiceField(
# initial=[2, ],
# choices=((1, '上海'), (2, '北京'),),
# widget=widgets.CheckboxSelectMultiple
# )
在使用選擇標簽時,需要注意choices的選項可以從數據庫中獲取诚卸,但是由于是靜態(tài)字段 獲取的值無法實時更新呻澜,那么需要自定義構造方法從而達到此目的递礼。
models.py
class UserType(models.Model):
caption = models.CharField(max_length=32)
class UserInfo(models.Model):
username = models.CharField(max_length=32)
email = models.EmailField()
user_type = models.ForeignKey(to='UserType',to_field='id')
方式一:
from django.forms import Form
from django.forms import widgets
from django.forms import fields
class UserInfoForm(forms.Form):
username = Ffields.CharField(max_length=32)
email = Ffields.EmailField()
user_type = Ffields.ChoiceField(
choices=models.UserType.objects.values_list('id','caption')
)
def __init__(self, *args, **kwargs):
super(UserInfoForm,self).__init__(*args, **kwargs)
self.fields['user_type'].choices = models.UserType.objects.values_list('id','caption')
方式二:
使用django提供的ModelChoiceField和ModelMultipleChoiceField字段來實現
from django import forms
from django.forms import fields
from django.forms import widgets
from django.forms import models as form_model #這里models重復,注意
class FInfo(forms.Form):
authors = form_model.ModelMultipleChoiceField(queryset=models.NNewType.objects.all())
# authors = form_model.ModelChoiceField(queryset=models.NNewType.objects.all())