模型表单无法保存在数据库中

Question

我是Django的初学者我想在数据库中保存表单数据，但我无法保存，遵循一些教程也。

form.py:

from django.forms import ModelForm
from .models import *
class listsForm(ModelForm):
class Meta:
model = todo
fields = "__all__"

views.py:

from django.shortcuts import render
from .models import *
from .form import *
def index(request):
lists = todo.objects.all()
form = listsForm()
context = {
'lists':lists,
'form':form,
}
if request.method == 'POST':
form = listsForm(request.POST)
if form.is_valid:
form.save()
return render(request, 'index.html', context)

models.py:

from django.db import models
class todo(models.Model):
title = models.CharField(max_length=200)
description = models.TextField(null=True, blank=True)
created = models.DateField(auto_now_add=True)
def __str__(self):
return self.title

Answer 1

为什么要呈现listsForm?您的表单应该在模板中，而不是呈现!

在index.html中，您的表单应该如下所示:

<form action="{% url 'create_todo' %}" method="POST">
{% csrf_token %}
<div class="form-group">
<label for="title">Title</label>
<input type="text" name="title" class="form-control" id="title" required></div>
<div class="form-group">
<label for="Description">Description</label>
<textarea name="description" class="form-control" id="description" ></textarea></div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>    

Inviews.py

def index(request):
return render(request, 'index.html')

def create_todo(request):
if request.method == 'POST':
form = listsForm(request.POST)
if form.is_valid():
form.save()
return redirect('index')

Inurls.py

from django.urls import path
from . import views
urlpatterns = [
path('', views.index, name='index'),
path('create_todo/', views.create_todo, name='create_todo')
]

你仍然需要渲染已经存在的待办事项，最好是在另一个模板中。

所以在views.py

def alltodos(request):
todos = Todo.objects.all()
return render(request, 'index.html', {'todos':todos})

在index.html中，在form的上面或后面，这并不重要，只是为了清晰可见

<div class="row justify-content-center mt-5">
<div class="col-md-10">
{% if todos %}
<div class="list-group">
{% for todo in todos %}
<a class="list-group-item list-group-item-action><b>{{ todo.title }}</b>{{ todo.description|truncatechars:30 }}{% endif %}</a>
{% endfor %}
</div>
{% else %}
<div class="text-center">
<h2>Looks like you don't have any todos!</h2>
<br>
</div>
{% endif %}
</div>
</div>

在urls.py添加

path('todos', views.alltodos, name='alltodos'),

矿山先进工程

Answer 2

我已经找到了它不工作的原因，

我使用<input type="button">提交按钮但是当我把它改为<button type="submit">时，它工作了。