Django 测试 form.is_valid()答案

【问题标题】：Django testing form.is_valid()Django 测试 form.is_valid()
【发布时间】：2018-09-14 13:16:09
【问题描述】：

我的视图在 url 中有可选参数。我把这个参数（<int:jobNr>/None）传入get_form_kwargs

class AddHoursView(LoginRequiredMixin, generic.CreateView):

    form_class = AddHoursForm

    def get_form_kwargs(self):
        # pass "jobNr" keyword argument from current url to form
        kwargs = super(AddHoursView, self).get_form_kwargs()
        kwargs[JOB_PARAM] = self.kwargs.get(JOB_PARAM)
        return kwargs

    def form_valid(self, form):
        self.object = form.save(commit = False)

        # If url/jobNR take jobNr from URL, if not take from form
        try:
            jobNr = self.kwargs[JOB_PARAM]
        except KeyError:
            jobNr = form.cleaned_data[JOB_WORKER].jobNr

        job = models.Job.objects.get(jobNr = jobNr)

        jobWorker = models.JobWorker.objects.get_or_create(job = job,
                                                user = self.request.user)
        self.object.jobWorker = jobWorker[0]
        self.object.save()
        return HttpResponseRedirect(reverse('worktime:myjobs'))

在__init__ 形式中，如果 url /foo/jobNr/ 使用 url 参数创建 self.jobNr。如果 url /foo/ 创建新字段。

class AddHoursForm(forms.ModelForm):

    def __init__(self, *args, **kwargs):   
        #Add jobworker field to from Worktime model if any jobNr pass in url
        #When in url will be parameter. Job foreignkey will be set by automat.
        self.jobNr = kwargs.pop(JOB_PARAM, None)
        super(AddHoursForm, self).__init__(*args, **kwargs)
        if not self.jobNr:
            self.fields[JOB_WORKER] = forms.ModelChoiceField(queryset=Job.objects.all())

    def clean(self):

        cleaned_data = super().clean()
        date = cleaned_data.get('date')

        if self.jobNr:
            jobDate = Job.objects.get(jobNr=self.jobNr).start

        elif not cleaned_data.get(JOB_WORKER).start: 
            raise forms.ValidationError("Dat work don't start yet")

        else:
            jobDate = cleaned_data.get(JOB_WORKER).start

        if date<jobDate:
            raise forms.ValidationError("Wrong date")

        return cleaned_data

现在我想为表单编写测试代码。这是我尝试过的

    def test_no_jobNr_in_url_and_no_date(self):

        job = Job.objects.create(jobNr = 1, street = 'a', city = 'a',
                            zip = 'a')

        form_data = {'description': 'description', 'hours': 20}
        form = AddHoursForm(form_data)
        # Override field jobWorker after __init__ form
        form.fields['jobWorker'] = job


        self.assertFalse(form.is_valid())

这就是我得到的AttributeError: 'Job' object has no attribute 'disabled' 5 小时后我需要帮助。我已经不知道了。

【问题讨论】：

标签： python django django-forms django-testing

【解决方案1】：

您不能将job 分配给表单字段（这就是form.fields['jobWorker'] 的含义）。如果你想分配一个初始值，你应该这样做：

form.fields['jobWorker'].initial = job

但我认为你想通过 job 作为选择的模型，你应该在数据中这样做：

form_data = {'description': 'description', 'hours': 20, 'jobWorker': job.pk}
form = AddHoursForm(form_data)
self.assertFalse(form.is_valid)

【讨论】：