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  • [django]form不清空问题解决

    https://www.cnblogs.com/OldJack/p/7118396.html

    有时候提交表单后,发现某个字段写错了,但是form的其他字段竟然被清空,这个万万不能接受.所有django的form后端生成form的html,渲染到前端可以解决
    1.前端写form的html
    2.django的form生成前端form所需的html

    forms.html

    #!/usr/bin/env python
    # coding=utf-8
    
    from django import forms
    from django.shortcuts import render
    
    
    class LoginForm(forms.Form):
        username = forms.CharField(error_messages={'required': "主机不能为空"})
        password = forms.CharField(required=True)
    
    

    views.py

    from django.http import HttpResponse
    from django.shortcuts import render
    
    from .forms import LoginForm
    
    
    # Create your views here.
    
    
    def login(request):
        "表单验证:前端自己写form的html"
        if request.method == "GET":
            return render(request, "app01/login.html")
        else:
            login_form = LoginForm(request.POST)
            if login_form.is_valid():
                username = request.POST.get('username', '')
                password = request.POST.get('password', '')
                return HttpResponse("%s:%s" % (username, password))
            return render(request, "app01/login.html", {'login_form': login_form})
    
    
    def login2(request):
        "表单验证: 后端生成form的html,解决了form不清空问题"
        if request.method == "GET":
            login_form = LoginForm()
            return render(request, "app01/login2.html", {"login_form": login_form})
        else:
            login_form = LoginForm(request.POST)
    
            if login_form.is_valid():
                username = request.POST.get('username', '')
                password = request.POST.get('password', '')
                return HttpResponse("%s:%s" % (username, password))
            return render(request, "app01/login2.html", {'login_form': login_form})
    
    

    浏览器不允许为空,可以打空格(后端form也校验不通过)

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  • 原文地址:https://www.cnblogs.com/iiiiiher/p/9417101.html
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