我對使用 django 框架相當陌生，最近我用它制作了一個系統，它通過 html 表單將資料提交到 mysql db。我最終讓它作業了，一切看起來都很好，雖然我注意到一個錯誤，如果我重繪 頁面 django 停止向 mysql 發送資料，這是否發生在任何人身上？
參考資料：
視圖.py
from django.shortcuts import render
from websiteDB.models import dbInsert
from django.contrib import messages
def insertToDB(request):
if request.method == "POST":
if request.POST.get('uname') and request.POST.get('email') and request.POST.get('message'):
post = dbInsert()
post.uname = request.POST.get('uname')
post.email = request.POST.get('email')
post.message = request.POST.get('message')
post.save()
messages.success(request, "Message sent successfully.")
return render(request, "contact.html")
else:
return render(request, "contact.html")
模型.py
from django.db import models
class dbInsert(models.Model):
uname = models.CharField(max_length=100)
email = models.EmailField()
message = models.TextField()
class Meta:
db_table = "contactrequest"
網址.py
"""
websiteDB URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/4.0/topics/http/urls/
Examples:
Function views
1. Add an import: from my_app import views
2. Add a URL to urlpatterns: path('', views.home, name='home')
Class-based views
1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: path('', Home.as_view(), name='home')
Including another URLconf
1. Import the include() function: from django.urls import include, path
2. Add a URL to urlpatterns: path('blog/', include('blog.urls'))
"""
from django.contrib import admin
from django.urls import path
from django.views.generic import TemplateView
from . import views
from . import index
urlpatterns = [
#path('admin/', admin.site.urls),
path('homepage', index.page_home, name= 'hpage'),
path('', views.insertToDB),
path('contactpage', index.contact_page, name= 'cpage')
]
聯系人.html
{% load static %}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Outfit:wght@200&display=swap" rel="stylesheet">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="{% static 'css/css/styles.css' %}">
<title>Document</title>
</head>
<body style="background-color: rgb(74, 36, 110);">
<script src="{% static 'js/main.js' %}"></script>
<div class="top-nav">
<a href="{% url 'hpage' %}">HOME</a>
<a href="products.html">PRODUCTS</a>
<a href="contact.html">CONTACT</a>
<a href="about.html">ABOUT</a>
<a href="community.html">COMMUNITY</a>
</div>
<div class="div-align">
<h2>Contact</h2>
<p>Reach us for questions/concerns through the form below.</p>
</div>
<form class="fontmaker" method="post">
{% csrf_token %}
<label for="Username">Username:</label><br>
<input type="text" id="Username" name="uname" required><br>
<label for="E-mail">E-mail:</label><br>
<input type="text" id="Email" name="email" required>
<label for="Reason" class="margin">Message:</label>
<textarea id="Reason" name="message" rows="10" cols="60" required>Type your reason of contact here.</textarea>
<input type="submit" value="Submit" class="rounded-corners" id="submitBtn">
{% if messages %}
{% for message in messages %}
{{message}}
{% endfor %}
{% endif %}
</form>
</body>
</html>
終端沒有錯誤，并且按鈕單擊也正確發送 POST req: Terminal output
我也是在stackoverflow上發帖的新手，請告訴我將來發帖時是否還有其他需要改進的地方。
索引.py
from django.http import HttpResponse
from django.shortcuts import render
def page_home(request):
return render(request, 'index.html')
def contact_page(request):
return render(request, 'contact.html')
提前致謝。
uj5u.com熱心網友回復：
如果您呈現contactpage/URL，那么如果您提交表單，您會將其提交給contact視圖，但該視圖不處理資料，也不創建任何條目。您必須確保將表單發布到insertToDB視圖。您可以通過為視圖命名來做到這一點：
urlpatterns = [
# …,
path('', views.insertToDB, name='insertToDB'),
# …
]然后以下列形式指定端點：
<form class="fontmaker" method="post" action="{% insertToDB %}">
<!-- … -->
</form>如果 POST 請求成功，您還應該重定向，例如：
from django.shortcuts import redirect
def insertToDB(request):
if request.method == 'POST':
if request.POST.get('uname') and request.POST.get('email') and request.POST.get('message'):
post = dbInsert.objects.create(
uname = request.POST['uname'],
email = request.POST['email'],
message = request.POST['message']
)
messages.success(request, 'Message sent successfully.')
return redirect('cpage')
return render(request, 'contact.html')
else:
return render(request, 'contact.html')我建議使用 Django表單[Django-doc]，例如模型表單[Django-doc]來驗證和清理表單輸入并洗掉大量樣板代碼。
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