Question

这是我的场景：我在页面上有多个选择框，用户从ModelChoiceField中选择选项，并重定向到一个视图，其中选定的选项作为参数传递。类似的东西：

class BrowseForm(forms.Form):
    thing = forms.ModelChoiceField(queryset=Thing.objects.all(), empty_label=None, widget=forms.Select(attrs={'onchange': 'this.form.submit();'}))
    stuff = forms.ModelChoiceField(queryset=Stuff.objects.all(), empty_label=None, widget=forms.Select(attrs={'onchange': 'this.form.submit();'}))

视图：

def browse(request):
    thing_list = Thing.objects.all()
    if request.method == 'POST':
        form = BrowseForm(request.POST)
        if form.is_valid():
            thing = form.cleaned_data['thing']
            stuff = form.cleaned_data['stuff']
            return HttpResponseRedirect(reverse('browse_thing', kwargs={'thing':thing, 'stuff':stuff}))
    else:
        form = BrowseForm()
    return render(request, 'browse.html', {'form':form, 'thing_list':thing_list})

这要求我提交BrowseForm的两个字段，但我希望thing和stuff有两个不同的网址，其中thing或{{ 1}}作为参数传递，而不是两者。类似的东西：

stuff

有没有办法用一个表单和一个视图执行此操作？或者我是否需要为url(r'^browse/things/(?P<thing>[\w-]+)/$', 'views.browse', name='browse_thing'), url(r'^browse/stuff/(?P<stuff>[\w-]+)/$', 'views.browse', name='browse_stuff'),和thing编写不同的表单，然后检查在我的视图中传递哪个表单并相应地重定向到相应的URL？你会怎么做？谢谢你的想法！

Answer 1

您可以选择根据是否传入thing或stuff来显示各种元素，因此您的视图会显示：

def browse(request, thing=None, stuff=None):
    # your code, then...
    return render(request, 'browse.html', {
        'form': form,
        'thing_list': thing_list,
        'stuff_list': stuff_list,
        'has_thing': bool(thing),
        'has_stuff': bool(stuff)
    })

然后在您的模板中，您可以执行以下操作：

{% for f in form %}
    {% if f.name == 'thing' and has_thing %}
        <!-- render it -->
    {% endif %}
    {% if f.name == 'stuff' and has_stuff %}
        <!-- render it -->
    {% endif %}
{% endfor %}

另请注意在required=False字段中设置BrowseForm，这样就不会在POST上收到验证错误，因为您只有一个或另一个。

Answer 2

虽然看起来不是很干，但这就是我解决问题的方法：

forms.py：

class StuffBrowseForm(forms.Form):
    stuff = forms.ModelChoiceField(queryset=Stuff.objects.all(), widget=forms.Select(attrs={'onchange': 'this.form.submit();'}))

class ThingBrowseForm(forms.Form):
    thing = forms.ModelChoiceField(queryset=Thing.objects.all(), widget=forms.Select(attrs={'onchange': 'this.form.submit();'}))

视图：

def browse(request):
    thing_list = Thing.objects.all()
    if request.method == 'POST':
        form1 = StuffBrowseForm(request.POST)
        form2 = ThingBrowseForm(request.POST)
        if form1.is_valid():
            stuff = form1.cleaned_data['stuff']
            return HttpResponseRedirect(reverse('browse_stuffs', kwargs={'stuff':stuff}))
        elif form2.is_valid():
            thing = form2.cleaned_data['thing']
            return HttpResponseRedirect(reverse('browse_things', kwargs={'thing':thing}))
    else:
        form1 = StuffBrowseForm()
        form2 = ThingBrowseForm()
    return render(request, 'browse.html', {'form1':form1, 'form2':form2, 'thing_list':thing_list})

网址：

url(r'^browse/$', 'views.browse', name='browse'),
url(r'^browse/stuff/(?P<stuff>[\w-]+)/$', 'views.browse_stuffs', name='browse_stuffs'),
url(r'^browse/things/(?P<thing>[\w-]+)/$', 'views.browse_things', name='browse_things'),

多种形式单视图Django

2 个答案: