Question

我有一个ModelForm，我创建了一个视图和模板，用于向数据库添加实例。我正在尝试将此扩展为在用户单击按钮时可编辑 - 但是当他们这样做时，表单/模板页面出现并且我得到“此字段是必需的消息”但是所有字段都是空的而不是预先填充的我传入的实例，但是当我将值编辑为与原来不同的值时，然后在我的数据库中更新正确的实例。所以它传递主键但没有任何值出现。如果有人能说出我做错了什么我会很感激哦，我正在使用这篇帖子Django edit form based on add form?作为基础所以请不要只是把我送到那里。

这是我的文件

的ModelForm

class CreditCardForm(forms.ModelForm):
class Meta:
    model = CreditCard
    fields = ('name_on_card','card_number','contact_number_on_card')

查看

def edit(request, id=None, template_name='article_edit_template.html'):
if id:
    print "Edit Mode"
    card = get_object_or_404(CreditCard, pk=id)
    if card.card_owner != request.user:
        raise HttpResponseForbidden()
else:
    print "Create Mode"
    card = CreditCard(card_owner=request.user)

if request.POST:
    print "request.POST"
    form = CreditCardForm(request.POST, instance=card)
    if form.is_valid():
        print "is_valid()"
        form.save()

        # If the save was successful, redirect to another page
        # redirect_url = reverse(article_save_success)
        return HttpResponseRedirect('/cards/')
else:
    print "else"
    form = CreditCardForm(instance=card)

return render_to_response(
    'create_credit.html', 
    {'form': form,},
    context_instance=RequestContext(request)
)

模板

{% include "base.html" %}

<form action="" method="post">{% csrf_token %}
<fieldset>
<legend>Required</legend>

<div class="fieldWrapper">
    {{ form.name_on_card.errors }}
    <label for="id_topic">Name as it appears on card:</label>
    {{ form.name_on_card }}
</div>
<div class="fieldWrapper">
    {{ form.card_number.errors }}
    <label for="id_topic">Last 6 digits of card number:</label>
    {{ form.card_number }}
</div>  
</fieldset>

<fieldset>
<legend>Optional</legend>
<!-- This is for Credit Card's Only -->
<div class="fieldWrapper">
    {{ form.contact_number_on_card.errors }}
    <label for="id_topic">Institution contact number: 1-</label>
    {{ form.contact_number_on_card }}
</div>
</fieldset>
<p><input type="submit" value="Save"></p>
</form>

URLS

    url(r'^new/credit/$', views.edit, {}, 'crds_newCredit'),
url(r'^edit/credit/(?P<id>\d+)/$', views.edit, {}, 'crds_editCredit'),

Answer 1

@xizor使用链接而不是按钮重定向到版本表单，因为您可能正在向视图发送帖子。

PS：请原谅我的英文，如果您认为使其更有用，请编辑此答案。

ModelForm的Django编辑模板没有填入值

1 个答案: