Django 表单提交（我认为）但不发送到数据库

Question

下面是我认为应该是 bootstrap3 模式中电子邮件提交表单的工作版本的代码。提交表单后，我被带到了准系统谢谢页面，但我认为电子邮件地址没有被发送到数据库，因为我在 Django admin 中看不到。

另外，我认为这被破坏的另一个原因是表单验证似乎不起作用。我可以提交看起来不像电子邮件地址的东西，但我仍然会被发送到感谢页面。

我的所有文件都存在问题，还是仅存在于特定区域？

views.py

from django.shortcuts import render
from temp.models import Email
from forms import EmailForm

def index(request):
    if request.POST:
        form = EmailForm(request.POST)
        if form.is_valid():
            email = EmailForm()
            email.save()
            return render(request, 'temp/thanks.html')

    return render(request, 'temp/index.html')

def thanks(request):
    return render(request, 'temp/thanks.html')

forms.py

from django import forms

class EmailForm(forms.Form):
    email = forms.CharField(max_length=100)

models.py

    from django.db import models

    class Email(models.Model):
        email = models.CharField(max_length=200)

        def __unicode__(self):  # Python 3: def __str__(self):
            return self.email

index.html

        <!-- Modal -->
        <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
            <div class="modal-dialog">
                <div class="modal-content">
                    <div class="modal-header">
                        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                        <h4 class="modal-title" id="myModalLabel">Sign up for the Beta</h4>
                    </div>

                    <div class="modal-body">
                        <!-- The async form to send and replace the modals content with its response -->
                        <form class="form-horizontal well" data-async data-target="#myModal" action="thanks/" method="POST">
                            {% csrf_token %}

                            <fieldset>
                                <div>Your email address:
                                    <span>


                                        <input type="text" id="modalInput"></input>

                                    </span>
                                </div>
                            </fieldset>

                    </div>

                    <div class="modal-footer">
                        <button type="submit" class="btn btn-default" data-dismiss="modal">Close</button>
                        <button type="submit" class="btn btn-primary">Submit</button>
                        </form>
                    </div>
                </div>
            </div>
        </div>
        <!-- End Modal -->

Answer 1

将您的视图更新为

def index(request):
    if request.POST:
        form = EmailForm(request.POST)
        if form.is_valid():
            email = form.save() #use form to save it in DB
            return render(request, 'temp/thanks.html')

    return render(request, 'temp/index.html')

另外，使用models.EmailField() 代替email 而不是CharField()。使用EmailField django 将适当地验证数据。将您的表单设为ModelForm，以便 django 将数据保存到适当的模型/表中。

class EmailForm(forms.ModelForm):
    class Meta:
        model = Email

Answer 2

在下面的代码中，您似乎正在使用一个空表单重新初始化电子邮件。您也没有创建或访问将保存电子邮件的电子邮件模型的实例。

def index(request):
    if request.POST:
        form = EmailForm(request.POST)
        if form.is_valid():
            email = EmailForm()   <<< reinitializing with empty form
            email.save()
            return render(request, 'temp/thanks.html')

你可能想做的是：

def index(request):
    if request.POST:
        form = EmailForm(request.POST)
        if form.is_valid():
            email_data = form.cleaned_data['email']   # read form data
            email = Email.objects.create(email=email_data)  # create model instance
            email.save()   # save instance
            return render(request, 'temp/thanks.html')

如果你使用ModelForms而不是Form，你可以直接做form.save()来保存模型。

Answer 3

你有三个错误。首先，您应该使用索引视图将 EmailForm 传递给 index.html。其次，您现在在索引视图中拥有的内容（根据之前的答案更正）应该移动到感谢视图，以便检索用户在 EmailForm 中输入的内容。最后，您必须更正您的模板，以便包含传递的 EmailForm。

Answer 4

我认为，您的表单没有生效，所以它没有被提交。那你为什么不这样写你的模板：

<form action="thanks/" method="post">
{% csrf_token %}
<div>Your email address:
{{ form.as_p }} </div> <!-- just for testing -->
<input type="submit" value="Submit" />
</form>

和形式：

class EmailForm(forms.Form):
    email = forms.CharField(max_length=100, widget=forms.TextInput(attrs={'id': 'myModel'})) #Seems, here you want your email's input field id to myModel

在视图中：

if form.is_valid():
   emaildata=Email() #Model email instance
   emaildata.email= form.cleaned_data['email']
   emaildata.save()
   # or try saveing like zaphod suggested

编辑

如果您想继续使用您的模板，那么我建议您放弃该表单。在views中，你会通过request.body获取数据。（我想你是用ajax来保存数据的）例如：

def index(request):
    if request.POST:
        data= request.body
        emaildata = Email() #Model Email instance
        emaildata.email= str(data)
        emaildata.save()
        return render(request, 'temp/thanks.html')

    return render(request, 'temp/index.html')

Answer 5

您正在使用请求数据保存一个空表单，而不是模型中的来自数据。 使用 ModelForm 更加简单易行，只需保存表单即可。 并使用 EmailField 代替 CharField 更好地验证电子邮件地址字符串

forms.py

from django.forms import ModelForm
from temp.models import Email

class EmailForm(forms.ModelForm):
    class Meta:
        model = Email

views.py

from django.shortcuts import render
from temp.models import Email
from temp.forms import EmailForm

def index(request):
    if request.method == 'POST':
        # POST, get the data from the form
        form = EmailForm(request.POST)
        if form.is_valid():
            # if is valid, just save, and return a new page with thanks
            form.save()
            return render(request, 'temp/thanks.html')
        else:
            # Form has errors, re-render with data and error messages
            return render(request, 'temp/index.html', {'form': form,})
    else:
        # GET, render new empty form
        form = EmailForm()
        return render(request, 'temp/index.html', {'form': form,})