Django 对表单中的多对多字段进行硬编码
在我看来，出于测试目的，我正在尝试对以下内容进行硬编码。我该如何执行此操作而不遇到错误？
我的观点：
`def create(request): form= PlayForm(request.POST 或 None) if form.is_valid():
play = form.save(commit=False)
play.track = 2
play.save()
request.user.message_set.create(message='Play Was created')
if 'next' in request.POST:
next = request.POST['next']
else:
next = reverse('coup_show')
return HttpResponseRedirect(next)
return render_to_response(
'dash/create.html',
{'form':form},
context_instance = RequestContext(request)`
我的模型：
class Play(models.Model):
track = models.ForeignKey(Track,null=True, related_name='track_creator_set')
当我尝试这个时，我收到以下错误...
Cannot assign "2": "Play.track" must be a "Track" instance.
I am trying to hardcode the following in my view for testing purposes. How do I do this without encountering an error?
My view:
`def create(request):
form= PlayForm(request.POST or None)
if form.is_valid():
play = form.save(commit=False)
play.track = 2
play.save()
request.user.message_set.create(message='Play Was created')
if 'next' in request.POST:
next = request.POST['next']
else:
next = reverse('coup_show')
return HttpResponseRedirect(next)
return render_to_response(
'dash/create.html',
{'form':form},
context_instance = RequestContext(request)`
My model:
class Play(models.Model):
track = models.ForeignKey(Track,null=True, related_name='track_creator_set')
When I try this I get the following error...
Cannot assign "2": "Play.track" must be a "Track" instance.
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评论（2）
试试这个：
您需要分配 Track 模型的一个实例，而不仅仅是 pk。
Try this:
You need to assign an instance of the Track model, rather than just the pk.
您只想将其设置为轨道 2？
怎么样：
错误告诉您您正在尝试给它一个编号，而实际上您需要一个 Track，因此解决方案是给它一个 Track。 :)
You just want to set it to track 2?
How about:
The error is telling you that you're trying to give it a number, when in fact you need a Track, so the solution is to give it a Track. :)