在保存时避免Django def post重复 [英] Avoid Django def post duplicating on save
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问题描述
我该如何防止?
提前感谢
#models.py
class Candidate(models.Model):
user = models.OneToOneField(User,primary_key = True)
birth = models.CharField(max_length = 50)
...
class Job(models.Model):
candidate = models.ManyToManyField('Candidate',through ='CandidateToJob')
title = models.CharField(max_length = 500)
...
class CandidateToJob(models.Model):
job = models.ForeignKey(Job,related_name ='applied_to')
candidate = models.ForeignKey(Candidate,related_name ='from_user')
STATUS_CHOICES =(
('1','未批准'),
('2','Approved'),
('3' 'hired')
)
status = models.CharField(max_length = 2,choices = STATUS_CHOICES)
class Meta:
unique_together =(候选人工作)
这是视图
#views.py
类JobDetails(generic.DetailView):
型=工作
TEMPLATE_NAME = '公司/作业detail.html'
form_class = ApplyForm
def get_context_data(self,** kwargs):
context = super(JobDetails,self).get_context_data(** kwargs)
context [ 'company_detail'] = Company.objects.all()
return context
def post(self,request,* args,** kwargs):
form = self.form_class (request.POST)
messages.success(request,'Sucesso!')
如果form.is_valid():
form.save(commit = False)
#create job
job = self.get_object(queryset = Job.objects.all())
#create候选人
候选人= Candidate.objects.get(pk = request.user)
#通过表$ s
candidatetojob = CandidateToJob.objects.create(job = job,candidate = candidate)
candidatetojob.save()
return HttpResponseRedirect( / jobs /')
表单
#forms.py
class ApplyForm(ModelForm):
class Meta:
model = CandidateToJob
exclude = [ '候选', '工作', '状态']
尽管unique_together,函数总是保存对象复制它们。
解决方案
这是我的代码:
def post(self,request,* args,** kwargs):
form = self.form_class(request.POST)
#create job
job = self.get_object(queryset = Job.objects.all())
#create候选人
候选人= Candidate.objects.get(pk = request.user)
#如果对象存在之前保存
如果CandidateToJob.objects.filter(job = job,candidate =候选人).exists():
messages.error(请求,'你已经应用了这个职位')
return HttpResponseRedirect(reverse('jobdetail',kwargs = { 'PK':job.pk}))
,否则:
如果form.is_valid():
form.save(提交= FALSE)
#assign到通过表
candidatetojob = CandidateToJob.objects.create(job = job,candidate = candidate,status ='0')
candidatetojob.save( )
messages.success(请求,成功!祝你好运。)
返回HttpResponseRedirect( /职位/)
Hi I'm facing issues of duplicated objects when saving. How can I prevent that?
Thanks in advance.
#models.py
class Candidate(models.Model):
user = models.OneToOneField(User, primary_key=True)
birth = models.CharField(max_length=50)
...
class Job(models.Model):
candidate = models.ManyToManyField('Candidate', through='CandidateToJob')
title = models.CharField(max_length=500)
...
class CandidateToJob(models.Model):
job = models.ForeignKey(Job, related_name='applied_to')
candidate = models.ForeignKey(Candidate, related_name='from_user')
STATUS_CHOICES = (
('1', 'Not approved'),
('2', 'Approved'),
('3', 'Hired')
)
status = models.CharField(max_length=2, choices=STATUS_CHOICES)
class Meta:
unique_together = ("candidate", "job")
Here is the view
#views.py
class JobDetails(generic.DetailView):
model = Job
template_name = 'companies/job-detail.html'
form_class = ApplyForm
def get_context_data(self, **kwargs):
context = super(JobDetails, self).get_context_data(**kwargs)
context['company_detail'] = Company.objects.all()
return context
def post(self, request, *args, **kwargs):
form = self.form_class(request.POST)
messages.success(request, 'Sucesso!')
if form.is_valid():
form.save(commit=False)
#create job
job = self.get_object(queryset=Job.objects.all())
#create candidate
candidate = Candidate.objects.get(pk=request.user)
#assign to the through table
candidatetojob = CandidateToJob.objects.create(job=job, candidate=candidate)
candidatetojob.save()
return HttpResponseRedirect('/jobs/')
And the form
#forms.py
class ApplyForm(ModelForm):
class Meta:
model = CandidateToJob
exclude = ['candidate', 'job', 'status']
Despite the unique_together, the function always save objects duplicating them.
解决方案
I got it working. Here is my code:
def post(self, request, *args, **kwargs):
form = self.form_class(request.POST)
#create job
job = self.get_object(queryset=Job.objects.all())
#create candidate
candidate = Candidate.objects.get(pk=request.user)
#check if objects exists before save
if CandidateToJob.objects.filter(job = job, candidate = candidate).exists():
messages.error(request, 'You have applied already for this position')
return HttpResponseRedirect(reverse('jobdetail', kwargs={'pk': job.pk}))
else:
if form.is_valid():
form.save(commit=False)
#assign to the through table
candidatetojob = CandidateToJob.objects.create(job=job, candidate=candidate, status='0')
candidatetojob.save()
messages.success(request, 'Success! Good luck.')
return HttpResponseRedirect('/jobs/')
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