Python 如果窗体的值存在于db中,则显示窗体
views.pyPython 如果窗体的值存在于db中,则显示窗体,python,html,django,django-models,django-forms,Python,Html,Django,Django Models,Django Forms,views.py @login_required() def Info_anlegen(request, id=None): item = get_object_or_404(Kunden, id=id) kontaktform_form = InfoForm(request.POST or None, instance=item) if WindowsHome.objects.filter(KN=item.KN).exists(): item1 = Wi
@login_required()
def Info_anlegen(request, id=None):
item = get_object_or_404(Kunden, id=id)
kontaktform_form = InfoForm(request.POST or None, instance=item)
if WindowsHome.objects.filter(KN=item.KN).exists():
item1 = WindowsHome.objects.get(KN=item.KN)
winform_form = InfoWinForm(request.POST or None, instance=item1)
if kontaktform_form.is_valid():
return redirect('/Verwaltung/KontaktAnlegen')
else:
form = acroniform(instance=item)
return render(request, 'blog/infokontakt.html',
{'kontaktform_form': kontaktform_form, 'winform_form': winform_form})
infokontakt.html
{% extends 'blog/base.html' %}
{% load bootstrap4 %}
{% block supertitle %} InfoPage {% endblock %}
{% block Content %}
{% load static %}
<html>
<div class="p-2 mb-1 bg-white text-black">
<head>
<div class="d-flex justify-content-center align-items-center container ">
<img src="{% static 'blog/Gubler.jpeg' %}" alt="Gubler" height="300" width="700">
</div>
</head>
<br>
<body>
<form class="form-row" action="" method="post">
<div style="margin-left: 2.5em;">
<font color="black">
<div class="col-sm-10 col-form-label">
{% csrf_token %}
{% bootstrap_form kontaktform_form %}
</div>
</font>
</div>
</form>
<form class="form-row" action="" method="post">
<div style="margin-left: 2.5em;">
<font color="black">
<div class="col-sm-10 col-form-label">
{% csrf_token %}
{% bootstrap_form winform_form %}
</div>
</font>
</div>
</form>
我怎么说如果db条目不存在,它就不应该显示表单?
或
如果数据库条目不存在,只需显示一个空格“您尝试将
winform\u form
发送到模板,但在WindowsHome.objects.filter(KN=item.KN.)exists()为false时未设置它
您可能应该这样做:
@login\u required()
def信息分析(请求,id=None):
上下文={}
item=获取对象或404(Kunden,id=id)
kontaktform_form=InfoForm(request.POST或None,instance=item)
如果WindowsHome.objects.filter(KN=item.KN.)存在():
item1=WindowsHome.objects.get(KN=item.KN)
winform_form=InfoWinForm(request.POST或None,实例=item1)
上下文['winform\u form']=winform\u form
如果kontaktform_form.是有效的():
返回重定向('/Verwaltung/KontaktAnlegen')
其他:
表单=acroniform(实例=项)
上下文['kontaktform_form']=kontaktform_form
返回呈现(请求'blog/infokontakt.html',上下文)
您尝试将winform\u表单
发送到模板,但当WindowsHome.objects.filter(KN=item.KN).exists()为false时,未设置该表单
您可能应该这样做:
@login\u required()
def信息分析(请求,id=None):
上下文={}
item=获取对象或404(Kunden,id=id)
kontaktform_form=InfoForm(request.POST或None,instance=item)
如果WindowsHome.objects.filter(KN=item.KN.)存在():
item1=WindowsHome.objects.get(KN=item.KN)
winform_form=InfoWinForm(request.POST或None,实例=item1)
上下文['winform\u form']=winform\u form
如果kontaktform_form.是有效的():
返回重定向('/Verwaltung/KontaktAnlegen')
其他:
表单=acroniform(实例=项)
上下文['kontaktform_form']=kontaktform_form
返回呈现(请求'blog/infokontakt.html',上下文)
您可以在方法的开头将winform\u form初始化为None,这样它就不会抛出该错误。(即)
此外,在模板中,您还可以使用django模板标记{%if%}。。。{%endif%}
i、 e
{%if winform\u form%}
{%csrf_令牌%}
{%bootstrap_form winform_form%}
{%endif%}
您可以在方法的开头将winform\u form初始化为None,这样它就不会抛出该错误。(即)
此外,在模板中,您还可以使用django模板标记{%if%}。。。{%endif%}
i、 e
{%if winform\u form%}
{%csrf_令牌%}
{%bootstrap_form winform_form%}
{%endif%}
ty您的评论与Adaikalaraj的代码配合使用ty您的评论与Adaikalaraj的代码配合使用
UnboundLocalError at /Verwaltung/InfoKontakt/6
local variable 'winform_form' referenced before assignment
Request Method: GET
Request URL: http://127.0.0.1:8000/Verwaltung/InfoKontakt/6
Django Version: 3.0.1
Exception Type: UnboundLocalError
Exception Value:
local variable 'winform_form' referenced before assignment
def Info_anlegen(request, id=None):
winform_form = None # Do like this
item = get_object_or_404(Kunden, id=id)
{% if winform_form %}
<form class="form-row" action="" method="post">
<div style="margin-left: 2.5em;">
<font color="black">
<div class="col-sm-10 col-form-label">
{% csrf_token %}
{% bootstrap_form winform_form %}
</div>
</font>
</div>
</form>
{% endif %}