标签:python forms django django-forms
我现在正在学习Django,遇到了这个错误,我对此有些困惑.我正在尝试将表格添加到我的主页上
我收到此错误:
码:
家用/ views.py:
from django.shortcuts import render
from forms import TestForm
from django.http import HttpResponseRedirect
def home(request):
if request == 'POST':
# create a form instane and populate it with data from the request
form = TestForm(request.POST)
if form.is_valid():
# process the data in form.cleaned_data as required
form.cleaned_data()
# redirect to a new URL:
return HttpResponseRedirect('/test/')
# if a GET (or any other method) we'll create a blank form
else:
form = TestForm()
return render(request, 'home/home_page.html', {'form': form})
def scan_events(request):
if request == "POST":
# json = request.POST['testData']
# condition statement for file upload ot c/p events
return render(request, 'home/test.html', {'data': request.POST})
def test(request):
request(request, 'home/test.html')
家用/ forms.py
from django import forms
TEST_TYPE_CHOICES = ('HDFS', 'HIVE', 'BOTH')
class TestForm(forms.Form):
# hdfs_test = forms.MultipleChoiceField()
# hive_test = forms.MultipleChoiceField()
# hdfs_hive_test = forms.MultipleChoiceField()
test_type = forms.MultipleChoiceField(required=True, widget=forms.RadioSelect(), choices=TEST_TYPE_CHOICES)
event_textarea = forms.Textarea(attrs={'rows': '8', 'class': 'form-control', 'placeholder': 'Events...', 'id': 'event_textarea'})
# file_upload = forms.FileInput()
urls.py:
urlpatterns = patterns('',
url(r'^admin/', include(admin.site.urls)),
url(r'^$', 'home.views.home', name='home'),
url(r'test/$', 'home.views.test'),
)
家用/模板/家/ home_page.html
{% extends 'index/index.html' %}
{% load staticfiles %}
{% block head %}
<script type="text/javascript" src="{{ STATIC_URL }}home/js/home.js" async></script>
<link href="{{ STATIC_URL }}home/css/home.css" rel="stylesheet">
{% endblock head %}
{% block content %}
<div>Welcome to Trinity E2E testing</div>
<form id="test-form" action="/test/" method="post"> {# pass data to /test/ URL #}
{% csrf_token %}
{{ form }}
<input id="submit-test" type="submit" class="btn btn-default btn-lg" value="Submit">
</form>
{% endblock content %}
解决方法:
choices
应该是键描述对的序列(准确地说是可迭代的).
TEST_TYPE_CHOICES = [
('HDFS', 'HDFS'),
('HIVE', 'HIVE'),
('BOTH', 'Both of HDFS and HIVE'),
]
错误消息的说明:
字符串也是序列.因此,使用选择的代码将字符串视为4个字符的序列(确切地说是字符串,因为Python中没有字符类型).这就是为什么会出现错误:太多值无法解包的原因
>>> a, b = ('HDFS', 'HDFS')
>>> a, b = 'HDFS'
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: too many values to unpack
如果所有字符串都是2个字符的字符串,它将隐藏(但不能解决)问题.
>>> a, b = 'HD'
>>> a
'H'
>>> b
'D'
标签:python,forms,django,django-forms 来源: https://codeday.me/bug/20191014/1912018.html
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