save() 方法不将表单数据保存到数据库（Django ModelForm）

Question

I'm making a simple todo list using Django, it works fine except that whatever data is entered into the form does not save to the database (and does not get displayed).我正在使用 Django 制作一个简单的待办事项列表，它工作正常，除了输入到表单中的任何数据都不会保存到数据库中（并且不会显示）。

My models.py:我的模型.py：

    from django.db import models

    class TodoListItem(models.Model):
        content = models.TextField()

        def __str__(self):
            return self.content

forms.py: forms.py：

from .models import TodoListItem
from django.forms import ModelForm

class TodoListForm(forms.ModelForm):
    class Meta:
        model = TodoListItem
        fields = ['content']

views.py:视图.py：

from django import forms
from django.shortcuts import render
from django.http import HttpResponseRedirect, HttpResponse
from .models import TodoListItem
from .forms import TodoListForm

def home(request):
    context = {
        'items': TodoListItem.objects.all()
    }
    return render(request, 'home.html', context)

def enter_task(request):
    if request.method == 'POST':
        form = TodoListForm(request.POST)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/')
        else:
            return HttpResponse('Form not valid')
    else:
        form = TodoListForm()
    return render(request, 'form.html', {'form': form})

I did it according to the documentation, what I fail to understand is why the line form.save() won't execute when return HttpResponseRedirect('/') right underneath it does.我是根据文档做的，我不明白为什么行form.save()在return HttpResponseRedirect('/')就在它下面时不会执行。

The form.html file, just in case: form.html 文件，以防万一：

<!DOCTYPE html>
<html>
    <head>
        <title>Add task</title>
        <h1>Add Task</h1>
    </head>
    <body>
        <form action="{% url 'home' %}" method="post">
            {% csrf_token %}
            {{ form }}
            <input type="submit" value="Submit">
        </form>
    </body>
</html>

I know that the error has to be in views.py because I used the admin site to add to TodoListItem manually and the html file does display it perfectly fine, just that whenever I submit the form it never saves to the aforementioned model.我知道错误必须在views.py中，因为我使用管理站点手动添加到TodoListItem，并且html文件确实显示得很好，只是每当我提交表单时它永远不会保存到上述model。

Answer 1

It is happening that you have entered the form action incorrectly发生您错误地输入了表单操作

<form action="{% url 'home' %}" method="post">
   {% csrf_token %}
   {{ form }}
 <input type="submit" value="Submit">
</form>

you have to put this url inside your form action enter_task您必须将此 url 放入表单操作enter_task

        <form action="{% url 'enter_task' %}" method="post">
            {% csrf_token %}
            {{ form }}
            <input type="submit" value="Submit">
        </form>

Answer 2

It looks like your form action is sending the form to your homepage rather than the URL that points to the enter_task view.看起来您的表单操作正在将表单发送到您的主页，而不是指向 enter_task 视图的 URL。 I don't know this for sure without seeing your urls.py but that's what I'd check.如果没有看到您的 urls.py，我不确定这一点，但这就是我要检查的内容。

save() 方法不将表单数据保存到数据库（Django ModelForm）

问题描述

2 个解决方案

解决方案1
1 已采纳 2020-12-26 05:43:56

解决方案2
1 2020-12-26 05:47:32

save() 方法不将表单数据保存到数据库（Django ModelForm）

问题描述

2 个解决方案

解决方案1 1 已采纳 2020-12-26 05:43:56

解决方案2 1 2020-12-26 05:47:32

解决方案1
1 已采纳 2020-12-26 05:43:56

解决方案2
1 2020-12-26 05:47:32