Django,html 模板,POST 提交表单不工作

Django, html template, POST submit form not working

这个表单中的'Submit'按钮,在这个Django项目中,好像没有做任何事情。我无法在代码或文件中发现逻辑错误。

sign.html(这是显示的页面)。单击提交按钮时,它什么也不做,但它应该填充数据库。

{% load static %}
<!DOCTYPE html>
<html>

<head>

  <link rel="stylesheet" href="{% static 'guestbook/styles.css' %}">
</head>
<body>

<h1>Tell the world how you're doing!</h1>
<h2>Sign the guestbook</h2>
<form class="form-signin" method="POST" action="{% url 'sign' %}">
{% csrf_token %}
  Enter your name:<br>
  <!--<input type="text" name="name" placeholder="Your Name here">-->
   {{form.name}}
  <br>
 Enter your comment:<br>
  <!--<textarea name="message" type="Textarea" placeholder="Your comment here" rows="10" cols="30"></textarea>-->
  {{form.comment}}
  <br><br>

  <input type="button" value="Submit">

</form> 


<p>Go to the <a href="{% url 'index' %}"> guestbook </a> itself</p>
</body>
</html>

我怀疑问题出在下面的代码中或可能在 views.py 文件中,但由于它没有抛出任何异常,所以我找不到它。

下面的符号函数与这个问题相关。

views.py

from django.shortcuts import render
from .models import Comment

from .forms import CommentForm

# Create your views here.

def index(request):
    comments = Comment.objects.order_by('-date_added')
    context ={'comments': comments}
    #name=Name.objects.order_by('-date_added')

    #return render(request,'guestbook/index.html')
    return render(request,'guestbook/index.html', context)


def sign(request):

    if request.method=='POST':
        form = CommentForm(request.POST)

        if form.is_valid():
            new_comment=Comment(name=request.POST['name'],comment=request.POST['comment'])
            new_comment.save()
            return redirect('index')
    else:
        form = CommentForm()

    context={'form' : form}
    return render(request,'guestbook/sign.html',context)

模型文件为要保存到数据库的名称和评论创建模型。

最后,models.py

from django.db import models
from django.utils import timezone

# Create your models here.

class Comment(models.Model):
    name=models.CharField(max_length=20)
    comments=models.TextField()
    date_added=models.DateTimeField(default=timezone.now)
    def __str__(self):
        return self.name    



"""
{% for c in comment %}
{% endfor %}
"""

一个表单是通过一个按钮提交的,里面的类型是submit

<form>
    <!-- button goes here and input fields also -->
</form>

改变这个

<input type="button" value="Submit">

<input type="submit" value="Submit">

然后在views.py 更改此 new_comment=Comment(name=request.POST['name'],comment=request.POST['comment'])

new_comment = Comment()
new_comment.name = request.POST.get("name")
new_comment.comments = request.POST.get("comment")
new_comment.save()

你的post方法应该是这样的:

def sign(request):

 if request.method=='POST':
     form = CommentForm(request.POST)

     if form.is_valid():
         new_comment=form.save()

         return redirect('index')
 else:
     form = CommentForm()

 context={'form' : form}
 return render(request,'guestbook/sign.html',context)