Django - 'JobProficienciesFormFormSet' 对象不可调用

Question

我在尝试edit 具有常规form 和formset 的模板中的表单时遇到问题，当我尝试保存更新行时收到此错误。页面正确填充。我不确定主要错误是什么。

python 中的回溯说明：

'JobProficienciesFormFormSet' object is not callable
At line 100:  form = proficiencies_formset(request.POST) 

这是我的代码：

views.py

@login_required(login_url='/login/')
def edit(request, jobid):

    # Get the job so we can edit. Also, for checking if the company logged in is valid
    job = Jobs.objects.get(id=jobid)

    # Permission check
    if job.user_id == request.user.id:

        # Get associated Job Proficiencies IDs attached to a Job
        profid = JobProficiencies_Proficiencies.objects.filter(job_id=jobid).select_related('job_proficiencies_id')
        # Get the Proficiency values attached to the job
        qset = JobProficiencies.objects.filter(id__in=profid).select_related('job_proficiency', 'proficiency_required', 'comfort_level')

        job_proficiencies = modelformset_factory(JobProficiencies, max_num=10, extra=0)
        proficiencies_formset = job_proficiencies(queryset=qset)

        args = {}
        args.update(csrf(request))
        args = {
            'id': jobid,
            'job': JobForm(instance=job),
            'job_proficiencies_formset': proficiencies_formset,
        }

        if request.method == 'POST':
            job = JobForm(request.POST, instance=job)
            form = proficiencies_formset(request.POST)

            if job.is_valid() and proficiencies_formset.is_valid():

                m_tags = job.cleaned_data['m_tags']
                _job = job.save(commit=False)
                _job.id = jobid
                _job.dateUpdated = datetime.now()
                _job.save()

                # Save proficiencies
                for f in form:
                    job_proficiency = f.save(commit=False)
                    job_proficiency.save()
                    JobProficiencies_Proficiencies.objects.update(job_id=_job.id, job_proficiencies_id=job_proficiency.id)

                # Without this next line the tags won't be saved.
                for m_tag in m_tags:
                    job.tags.add(m_tag)

                messages.success(request, "Job Edited!")
                return HttpResponseRedirect('/job/all/')

            else:
                messages.error(request, "There are form errors!")
                return render_to_response('job/edit.html/', args, context_instance=RequestContext(request))

        return render_to_response('job/edit.html', args, context_instance=RequestContext(request))

    HttpResponseRedirect('job/all/')

forms.py

class JobForm(forms.ModelForm):

    m_tags = TagField()
    class Meta:
        model = Jobs
        fields = ('title', 'about', 'wage', 'gitHubLink')

    def save(self, commit=True):
        job = super(JobForm, self).save(commit=False)
        job.title = self.cleaned_data['title']
        job.about = self.cleaned_data['about']
        job.wage = self.cleaned_data['wage']
        job.gitHubLink = self.cleaned_data['gitHubLink']
        job.dateUpdated = datetime.now()
        job.status = 'JO'

        if commit:
            job.save()
        return job


class JobProficienciesForm(forms.ModelForm):

    class Meta:
        model = JobProficiencies
        fields = ('job_proficiency', 'proficiency_required', 'comfort_level')

    def save(self, commit=True):
        jobproficiency = super(JobProficienciesForm, self).save(commit=False)
        jobproficiency.job_proficiency = self.cleaned_data['job_proficiency']
        jobproficiency.proficiency_required = self.cleaned_data['proficiency_required']
        jobproficiency.comfort_level = self.cleaned_data['comfort_level']

        if commit:
            jobproficiency.save()
        return jobproficiency

同样，模板填充正确。错误在于保存编辑。这就是我卡住的地方。非常感谢任何帮助。谢谢！

编辑这是我在模板中显示表单集的方式：

                {{ job_proficiencies_formset.management_form }}
                {% for p in job_proficiencies_formset %}
                    {{ p.id }}
                    <div class="row item">
                        <div class="col-md-5">
                            {{ p.job_proficiency|add_class:"form-control" }}
                        </div>
                        <div class="col-md-3">
                            {{ p.comfort_level|add_class:"form-control" }}
                        </div>
                        <div class="col-md-3">
                            {{ p.proficiency_required|add_class:"form-control" }}
                        </div>
                        <div class="col-md-1">
                            <p><a id="delete-row" class="delete-row" href="#"><i class="fa fa-trash-o fa-2x"></i></a></p>
                        </div>
                    </div>
                {% endfor %}

Answer 1

在代码中，proficiencies_formset 是一个表单集对象，而不是一个类。

        proficiencies_formset = job_proficiencies(queryset=qset)
...
        form = proficiencies_formset(request.POST)

我认为你的意思是：

        proficiencies_formset = job_proficiencies(request.POST)

然后：

            # Save proficiencies
            for f in proficiencies_formset:

这种事情是我喜欢保持使用大写字母开始类名的惯例的原因之一，即使类是由工厂构造的。