django - Diango 1.6 How about this way of create an object for a model which has two ForeignKey fields? -
there 3 models: user, question , answer.
my way can works--override answer modelform's save method, pass 2 objects(question , user it.
i not sure whether official way or best way. or there tutorial situation, thanks.
this code:
#settings.py #root urls.py urlpatterns = patterns('', url(r'^$', 'myauth.views.home', name='home'), url(r'^questions/', include('questions.urls',namespace='questions')), ) #urls.py urlpatterns = patterns('questions.views', url(r'^(?p<question_pk>\d+)/detail/$', 'detail', {'template_name': 'questions/detail.html'}, name='detail'), ) #models.py class user(abstractbaseuser): username = models.charfield() class question(models.model): user = models.foreignkey(user) title = models.charfield() content = models.textfield() class answer(models.model): #user create anwer question user = models.foreignkey(user) question = models.foreignkey(question) content = models.textfield() #forms.py class answerform(modelform): class meta: model = answer fields = ['content'] #this way #pass 2 objects:user , question def save(self,user,question,commit=true,): answer = super(answerform,self).save(commit=false) answer.user = user answer.question = question if commit: answer.save() return answer #views.py def detail(request, question_pk, template_name, answer_create_form=answerform): """detail show question,contains: 1.question's title , content. 2.all answers(represented field 'content')to question 3.a form create answer question """ #question object identified question_pk url string. #along request.user, both passed form #create answer objects. question = question.objects.get(pk=question_pk) user = request.user #all answers question answers = question.answer_set.all() form=none if user.is_authenticated(): if request.method == 'post': form = answer_create_form(data=request.post) if form.is_valid(): form.save(user=user,question=question) return httpresponseredirect(request.meta.get('http_referer', '/')) else: form = answer_create_form() return templateresponse(request, template_name, locals(),) #questions/detail.html #rest ommitted... {% if form %} <form action="" method="post">{% csrf_token %} {{ form.as_p }} <input type="submit" value="回答" /> </form> {% endif %}
i think need read this. should de like:
question = question.objects.get(pk=question_pk) user = request.user (....) if user.is_authenticated(): if request.method == 'post': answer = answer(question=question, user=user) form = answerform(data=request.post, instance=answer) if form.is_valid(): form.save() (....) 
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