आनं*_*नंद 6 html python django
所以我使用 Django 框架将控制台输出显示为 HTML。为了执行命令，我在 Python 中使用check_outputofsubprocess模块。它接收来自 HTML 输入表单的输入。问题是，我只看到“ None” HTML页面，这是默认值上output的views文件。下面是视图文件和 HTML 文件的代码。我是这方面的新手，因此非常感谢您的帮助。
视图.py
from django.shortcuts import render
from django.shortcuts import redirect
from .forms import command_form
import subprocess as sp
# Create your views here.
def welcome_page(request):
output=""
if request.method == "POST":
myform = command_form(request.POST)
if (myform.is_valid()):
execute_command = myform.cleaned_data['cmd_string']
output = sp.check_output(execute_command, shell=True)
else:
myform = command_form()
return render(request, 'ovs/welcome.html', {'output': output})
else:
return render(request, 'ovs/welcome.html', {})
欢迎.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>welcome to ovs GUI</title>
</head>
<body>
<h3>Choose the option:</h3>
<form method="POST">{% csrf_token %}
Enter the command: <input type="text" name="cmd_string" id="cmd_string"/>
<input type="submit" value="Run"/>
</form>
<h3>{{ output }}</h3>
</body>
</html>
形式
from django import forms
class command_form(forms.Form):
command = forms.CharField(max_length=200)
您没有将表单字段正确呈现为 HTML。你已经创造了一种command_form形式，但你从不利用它。但是，您应该为 python es 使用驼峰式大小写名称class，如下所示CommandForm。
在 HTML 中写入以下内容：
<form method="POST">{% csrf_token %}
Enter the command: {{ myform }}
<input type="submit" name="submit_cmd" value="Run" />
</form>
{% if output %}<h3>{{ output }}</h3>{% endif %}
{% if exit_code %}<h3>Your command returned an error: {{ error_msg }}</h3>{% endif %}
{{ my_form }}将自动扩展为<input type="text" ...>
welcome_page现在，像这样写下你的观点：
def welcome_page(request):
output = ""
# Initialize the form. At this point you have an unbound/invalid form
myform = command_form() # better write it as CommandForm
if request.method == "POST":
myform = command_form(request.POST)
if myform.is_valid():
# execute_command variable, should now contain the command typed by the user in the text box
execute_command = myform.cleaned_data['command']
try:
# If the return code is non-zero, CalledProcessError will be raised
output = sp.check_output(execute_command, shell=True)
except sp.CalledProcessError:
exit_code, error_msg = output.returncode, output.output
else:
# Do something when the form is not valid. Maybe add a message or something, or not implement else clause at all.
return render(request, 'ovs/welcome.html', locals())
警告！根据文档说：
使用
shell=True可能存在安全隐患。