[英]Django - Query to retrieve pk from other model
我正在嘗試創建查詢以從數據庫中獲取當前帖子的pk。 然后將其設置為新帖子的外鍵。 我正在使用formview,而我嘗試從中檢索“ id”的模型稱為Projects。 ID是模型項目的主鍵。
我將如何處理?
pk = 5,因為我不知道如何獲得當前的。
views.py
class ProjectDetailToDoForm(FormView):
model = ProjectsToDo
form_class = ProjectToDoForm
success_url = '../..'
@method_decorator(login_required)
def dispatch(self, request, *args, **kwargs):
return super(ProjectDetailToDoForm, self).dispatch(request, *args, **kwargs)
def form_valid(self,form):
self.object = form.save(commit=False)
self.object.project = Projects.objects.get(pk=5)
self.object.save()
return super(ProjectDetailToDoForm, self).form_valid(form)
class ProjectDetail(generic.DetailView):
model = Projects
context_object_name = 'indprojects'
template_name = 'projectpage.html'
def get_context_data(self, *args, **kwargs):
context = super(ProjectDetail, self).get_context_data(*args, **kwargs)
context['todolist'] = ProjectsToDo.objects.order_by('project_tododate')
context['todoform'] = ProjectToDoForm()
context['form'] = ProjectForm(instance=Projects.objects.get(slug=self.kwargs['slug']))
return context
def get_queryset(self):
return Projects.objects.filter(user=self.request.user)
@method_decorator(login_required)
def dispatch(self, request, *args, **kwargs):
return super(ProjectDetail, self).dispatch(request, *args, **kwargs)
models.py
class Projects(models.Model):
user = models.ForeignKey(User)
slug = models.SlugField()
project_title = models.CharField(max_length=30)
project_shortdesc = models.CharField(max_length=248)
project_desc = models.TextField()
def save(self):
super(Projects, self).save()
date = datetime.date.today()
self.slug = '%i%i%i%s' % (
date.year, date.month, date.day, slugify(self.project_title)
)
super(Projects, self).save()
class ProjectsToDo(models.Model):
project_tododate = models.DateField()
project_tododesc = models.TextField(max_length = 500)
project = models.ForeignKey(Projects)
def __unicode__(self):
return '%s %s' % (self.project_tododesc, self.project_tododate)
我猜您使用URL定義了活動項目。 在這種情況下,您可以執行以下操作:
urls.py
url(r'^(?P<project_slug>[\w-]+)/add_todo/$',
views.ProjectDetailToDoForm.as_view(),
name='add_todo',
),
...
視圖
def form_valid(self, form):
self.object = form.save(commit=False)
project = Project.objects.get(slug=self.kwargs["project_slug"])
self.object.project = project
self.object.save()
return super(ProjectDetailToDoForm, self).form_valid(form)
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