如何创建和处理具有多个相同字段的表单?

时间:2012-11-25 10:09:18

标签: django django-forms

我真的很困惑。为了显示我的问题,我创建了一个新的Django项目并从头开始,只关注一个表单。

我要做的是创建一个包含多个同名字段的表单。我尝试使用modelformset_factory来实现这一目标,但在我看来,这并不是我真正需要的。

以下是我的代码(也在dpaste上),目前只有一个名为name的字段正常工作。如何创建和处理具有多个name字段的表单?有人能指出我正确的方向吗?

# models.py
class Category(models.Model):
    name = models.CharField(max_length=30, unique=True)
    user = models.ForeignKey(User, blank=True, null=True)

    class Meta:
        verbose_name_plural = "Ingredience Categories"

    def __unicode__(self):
        return self.name

# forms.py
class CategoryForm(ModelForm):
    class Meta:
        model = Category
        fields = ('name',)

# views.py
def home(request):
    if request.method == 'POST':
        catform = CategoryForm(request.POST)
        catformInstance = catform.save(commit = False)
        catformInstance.save()
        return HttpResponseRedirect('')
    else:
        catform = CategoryForm() 

    context = {'catform': catform}
    return render_to_response('home.html', context, context_instance=RequestContext(request))

# home.html template
<h3>Insert new Category</h3> 
<form action="/" method="post" id="ingr-cat-form">{% csrf_token %}
{{ catform.as_p }}
<input type="submit" name="ingrCatForm" value="Save" />
</form>

更新:澄清一下,我想允许用户在一个表单中插入多个类别。我想我已经接近了,这是我的新版本的views.py ,但它仍然只存储一个类别(列表中的最后一个):

def home(request):
    if request.method == 'POST':
        catform = CategoryForm(request.POST)
        names = request.POST.getlist('name')
        catformInstance = catform.save(commit = False)
        for name in names:
            catformInstance.name = name
            catformInstance.save()
        return HttpResponseRedirect('')
    else:
        catform = CategoryForm() 

    context = {'catform': catform}
    return render_to_response('home.html', context, context_instance=RequestContext(request))

2 个答案:

答案 0 :(得分:1)

您不能拥有相同名称的字段(在同一型号上)。如果您只需要更改html表单中的html标签,请使用

class Category(models.Model):
    name = models.CharField(max_length=30, unique=True)
    name2 = models.CharField(max_length=30, unique=True, verbose_name="name")
    user = models.ForeignKey(User, blank=True, null=True)

class CategoryForm(ModelForm):
    def __init__(self , *args, **kwargs):
        super(CategoryForm, self).__init__(*args, **kwargs)
        self.fields['name2'].label = "name"

答案 1 :(得分:0)

这是一个有效的解决方案。感谢@YardenST指出我正确的方向。我设法通过this tutorial来解决我的初始问题。

# models.py
class Category(models.Model):
    name = models.CharField(max_length=30, unique=True)
    user = models.ForeignKey(User, blank=True, null=True)

    class Meta:
        verbose_name_plural = "Ingredience Categories"

    def __unicode__(self):
        return self.name

# forms.py
class CategoryForm(ModelForm):
    class Meta:
        model = Category
        fields = ('name',)

# views.py
def home(request):
if request.method == 'POST':
    catforms = [CategoryForm(request.POST, prefix=str(x), instance=Category()) for x in range(0,3)]
    if all([cf.is_valid() for cf in catforms]):
        for cf in catforms:
            catformInstance = cf.save(commit = False)
            catformInstance.save()
    return HttpResponseRedirect('')
else:
    catform = [CategoryForm(prefix=str(x), instance=Category()) for x in range(0,3)]

context = {'catform': catform}
return render_to_response('home.html', context, context_instance=RequestContext(request))


# home.html template
<h3>Insert new Category</h3>
<form action="/" method="post" id="ingr-cat-form">{% csrf_token %}
{% for catform_instance in catform %} {{ catform_instance.as_p }} {% endfor %}
<input type="submit" name="ingrCatForm" value="Save" />
</form>