西游之路——python全栈——Form组件字段及动态绑定

一、HTML中 | safe  可在后台用以下方式处理

text = "<input type'text' />"
from django.utils.safestring import mark_safe
text = mark_safe(text)

二、views.py操作

from django.shortcuts import render

from django import forms
from django.forms import fields,widgets
from app01 import models
class LoveForm(forms.Form):
    price = fields.IntegerField()
    user_id = fields.IntegerField(
        # widget=widgets.Select(choices=[(1,'alex'),(2,'xialv'),(3,'sb'),])
        # 数据库取值
        widget=widgets.Select()
    )
    # 设置动态绑定，随时更新数据
    def __init__(self,*args,**kwargs):
        # super必须在前，拷贝所有的静态字段，复制给self.fields
        super(LoveForm,self).__init__(*args,**kwargs)
        self.fields['user_id'].widget.choices = models.UserInfo.objects.values_list('id','username')

def love(request):
    obj = LoveForm()
    return render(request,'love.html',locals())