Django ModelForm不保存数据 [英] Django ModelForm not saving data

问题描述

我尝试了以下帖子中的解决方案：

I've tried solutions from the following posts:

从ModelForm保存数据：无效

未保存django的ModelForm数据：无效。

我正在尝试将ModelForm中的数据保存到模型中。

I'm trying to save data from a ModelForm into the model.

models.py：

models.py:

class Testimonials(models.Model):
    name = models.CharField(max_length=128)
    credentials = models.CharField(max_length=128)
    test = models.CharField(max_length=2000)
    id = models.AutoField(primary_key=True)
    NO = 'NO'
    YES = 'YES'
    APPROVAL = ((NO, 'no'), (YES, 'yes'))
    verified = models.CharField(choices=APPROVAL, default=NO, max_length=3) #Field for making sure only verified testimonials are displayed

    def __unicode__(self):
        return self.id

forms.py：

class TestimonialForm(forms.ModelForm):
    name = forms.CharField(widget=forms.TextInput(attrs={'class': 'form-control input-area', 'placeholder': 'Enter your name'}), required=True)
    credentials = forms.CharField(widget=forms.TextInput(attrs={'class': 'form-control input-area', 'placeholder': 'Enter your designation'}), required=True)
    test = forms.CharField(widget=forms.Textarea(attrs={'class': 'form-control test-form-area', 'placeholder': 'Testimonial', 'rows': '5'}), required=True)
    verified = forms.ChoiceField(widget=forms.HiddenInput())

    class Meta:
        model = Testimonials  

views.py

def add_testimonial(request):
    context = RequestContext(request)
    if request.method == 'POST':
        form = TestimonialForm(request.POST)

        if form.is_valid():
            form.save(commit=True)
            return HttpResponseRedirect('/testimonials/thanks/')
        else:
            print form.errors

    else:
        form = TestimonialForm()

    return render_to_response('templates/add_testimonial.html', {'form': form}, context)

模板：

<form id="testimonial_form" method="POST" action="/testimonials/thanks/">
    {% csrf_token %}
    {% for hidden in form.hidden_fields %}
        {{ hidden }}
    {% endfor %}
    {% for field in form.visible_fields %}
        {{ field.help_text}}
        {{ field }}
    {% endfor %}
    <input type="submit" name="submit" value="Add testimonial" class="btn btn-info test-button"/>
</form>

编辑：

urls.py

url(r'^testimonials/all/', views.testimonials, name='testimonial'),
url(r'^testimonials/thanks/', views.testimonials_thanks, name='testimonial_thanks'),
url(r'^add_testimonial', views.add_testimonial, name='add_testimonial'),

但是，在重定向时，它不会将表单保存到我从两个PHPMyAdmin（使用MySQLdb）检查的模型中）和Django Admin面板。知道为什么吗？

However, on redirect, it doesn't save the form into the model which I'm checking from both PHPMyAdmin (using a MySQLdb) and the Django Admin panel. Any idea why?

推荐答案

您要发布到 / testimonials / thanks / 更改为您的 add_testimonial 路由，以使您的视图处理POST。因此，解决方案是更改模板的表单标签中的 action 值。

You are POSTing to /testimonials/thanks/ which should be changed to your add_testimonial route to have your view handle the POST. So, the solution is to change the action value in your template's form tag.

如果您可以发布相关的您可以从urls.py中获取代码。对于action属性的值，我可以提供更具体的答案。

If you can post the relevant code from your urls.py I can provide a more specific answer as to what the value of the action attribute should be.

更新

发布有效表单后，重定向将在您的视图中发生。将模板的操作属性值更改为：

The redirect will happen in your view when a valid form is POSTed. Change your template's action attribute value to:

<form id="testimonial_form" method="POST" action="{% url 'add_testimonial' %}">

您认为：

if form.is_valid():
    form.save()
    return HttpResponseRedirect(reverse('testimonial_thanks'))

并确保在视图中包括以下导入：

And make sure you include the following import in your view:

from django.core.urlresolvers import reverse

更新2

在模板中显示表单错误：

Display your form errors in your template:

<form id="testimonial_form" method="POST" action="{% url 'add_testimonial' %}">
    {% csrf_token %}
    {% if form.non_field_errors %}
        <div class="form-group text-error">
            {{ form.non_field_errors }}
        </div>
    {% endif %}

    {% for hidden in form.hidden_fields %}
        {{ hidden }}
    {% endfor %}
    {% for field in form.visible_fields %}
        {{ field.help_text}}
        {{ field }}
        {% if field.errors %}
            <span>{{ field.errors|striptags }}</span>
        {% endif %}
    {% endfor %}
    <input type="submit" name="submit" value="Add testimonial" class="btn btn-info test-button"/>
</form>

更新3

现在您可以看到表格错误，您将需要向隐藏字段提供默认值，如果用户没有选择（隐藏！），则无需将其设为ChoiceField。因此，将 verified 表单字段更改为：

Now that you can see your form errors, you will need to provide your default value to the hidden field, and there's no need to make it a ChoiceField if the user has no choice (it's hidden!). So change the verified form field to:

verified = forms.CharField(widget=forms.HiddenInput(), initial='no')

另外，这将是一个在字段中验证该值的一个好主意，因为即使该字段被隐藏，一个进取的，邪恶的用户仍然可以发布其他值。

Also, it would be a good idea to verify the value in your view since even though the field is hidden, an enterprising, evil user can still POST other values.

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