如何解决Django：将条目中的数据用于许多视图功能
我是 Django 的新手，现在我正在做我的第一个项目。
我的 home.html 文件包含表单（引导程序类），其中包含要填充数据的条目。 这些数据是整数类型。
在视图中，在函数 home 中，使用这个 home.html 文件， 条目中的数据通过 'get' 方法获取并用于计算，结果以提及的形式显示在标签中。
我的问题是如何通过另一个函数在名为 some_view 的视图中使用条目或计算结果中的这些数据，并使用 ReportsLab 生成 PDF 文件。
谢谢
home.html
<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<title>Title</title>
<style>
body { margin: 40px }
.my-container {
border: 1px solid green}
.my-row {
border: 2px solid blue}
.my-col {
border: 2px solid red}
btn-primary { margin-left: 50px}
.align-right {
text-align: center;
border: 0;
}
</style>
</head>
<body>
<div class="container my-container">
<form method="get">
<div class= "row my-row">
<div class="col-3 my-col">
<input type="text" placeholder="0" name="li200" size="1" />
</div>
<div class="col my-col">
<h3><span class="badge badge-secondary"> {% if liczba %}
{{ liczba }}
{% endif %}
</span></h3>
</div>
<div class="col my-col">
<h3><span class="badge badge-secondary"> {% if ls %}
{{ ls }}
{% endif %}
</span></h3>
</div>
</div>
<div class= "row my-row">
<div class="col-3 my-col">
<input type="text" placeholder="0" name="li100" size="1" />
</div>
<div class="col my-col">
<h3><span class="badge badge-secondary"> {% if liczba1 %}
{{ liczba1 }}
{% endif %}
</span></h3>
</div>
<div class="col my-col">
<h3><span class="badge badge-secondary"> {% if ls1 %}
{{ ls1 }}
{% endif %}
</span></h3>
</div>
</div>
<div class= "row my-row">
<div class="col-3 my-col">
<input type="text" placeholder="0" name="li50" size="1" />
</div>
<div class="col my-col">
<h3><span class="badge badge-secondary"> {% if liczba3 %}
{{ liczba3 }}
{% endif %}
</span></h3>
</div>
<div class="col my-col">
<h3><span class="badge badge-secondary" name="superowo"> {% if ls3 %}
{{ ls3 }}
{% endif %}
</span></h3>
</div>
</div>
<div class= "row my-row">
<div class="col-3 my-col">
</div>
<div class="col my-col">
<h3><span class="badge badge-secondary"> {% if suma %}
{{ suma }}
{% endif %}
</span></h3>
</div>
</div>
<input type="submit" class="btn" value="Click" name="print_btn">
<a class="btn btn-primary" type="submit" href="{% url 'some_view'%}" >Do PDF</a>
<div class="align-right">
</div>
</form>
</div>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@4.5.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx" crossorigin="anonymous"></script>
</body>
views.py
import reportlab
import io
from django.http import FileResponse
from reportlab.pdfgen import canvas
#==================================
from django.shortcuts import render
from . import slownie
def home (request):
ls=''
ls1=''
ls3=''
liczba= request.GET.get("li200")
liczba1=request.GET.get("li100")
liczba3=request.GET.get("li50")
if liczba and liczba.isdigit():
liczba=int(liczba)*200
ls=slownie.slownie(int(liczba))
if liczba1 and liczba1.isdigit():
liczba1=int(liczba1)*100
ls1=slownie.slownie(int(liczba1))
if liczba3 and liczba3.isdigit():
liczba3=int(liczba3)*50
ls3=slownie.slownie(int(liczba3))
suma=0
if liczba1 and liczba and liczba3:
suma=int(liczba)+int(liczba1)+int(liczba3)
return render(request,'home.html',{'liczba':liczba,'liczba1':liczba1,'liczba3':liczba3,'suma':suma,'ls':ls,'ls1':ls1,'ls3':ls3})
def some_view(request):
ls = ''
ls1 = ''
ls3 = ''
liczba = request.GET.get("li200")
liczba1 = request.GET.get("li100")
liczba3 = request.GET.get("li50")
if liczba and liczba.isdigit():
liczba = int(liczba) * 200
ls = slownie.slownie(int(liczba))
if liczba1 and liczba1.isdigit():
liczba1 = int(liczba1) * 100
ls1 = slownie.slownie(int(liczba1))
if liczba3 and liczba3.isdigit():
liczba3 = int(liczba3) * 50
ls3 = slownie.slownie(int(liczba3))
suma = 0
# Create a file-like buffer to receive PDF data.
buffer = io.BytesIO()
# Create the PDF object,using the buffer as its "file."
p = canvas.Canvas(buffer)
# Draw things on the PDF. Here's where the PDF generation happens.
# See the ReportLab documentation for the full list of functionality.
p.drawString(100,100,ls3)
# Close the PDF object cleanly,and we're done.
p.showPage()
p.save()
# FileResponse sets the Content-Disposition header so that browsers
# present the option to save the file.
buffer.seek(0)
return FileResponse(buffer,as_attachment=True,filename='hello.pdf')
解决方法
你可以这样添加
urls.py
urlpatterns [
path('',some_view,name="some_view")
]
你的模板
<form action="{% url 'some_view' %}" method="GET">
...
<button type="submit">Submit</button>
</form>
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