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我有以下 FormView ，它适用于我当时想做的事情：

class LearningObjectiveView( LoginRequiredMixin, FormView ):
  form_class = LearningObjectiveForm
  template_name = 'learningobjective'
  success_url = reverse_lazy( 'learning_objective' )

  def get_context_data( self, **kwargs ):
    trainee = Trainee.objects.get( user = self.request.user )
    context = super( LearningObjectiveView, self ).get_context_data( **kwargs )
    context['learningobjective'] = LearningObjective.objects.filter( trainee = trainee.id )
    context['topic'] = Topic.objects.filter( trainee = trainee.id )
    return context

  def get_form_kwargs( self ):
    kwargs = super( LearningObjectiveView , self ).get_form_kwargs()
    kwargs['user'] = self.request.user
    return kwargs 

  def form_valid( self, form ):
    self.object = form.save( commit = False )
    if self.request.user.is_authenticated():
      self.object.trainee = Trainee.objects.get( user = self.request.user )
    self.object.save()
    form.save_m2m()
    return super( LearningObjectiveView, self ).form_valid( form )

由于我现在想包含分页，并且我刚刚在除 FormView 之外的每个 CBV 上都看到了示例，因此我想将 ListView 与 FormMixin 一起使用。

使用 FormMixin 的 ListView

class LearningObjectiveView( LoginRequiredMixin, FormMixin, ListView ):
  form_class = LearningObjectiveForm
  template_name = 'learningobjective'
  model = LearningObjective
  success_url = reverse_lazy( 'learning_objective' )

  def get_context_data( self, **kwargs ):
    trainee = Trainee.objects.get( user = self.request.user )
    context = super( LearningObjectiveView, self ).get_context_data( **kwargs )
    context['learningobjective'] = LearningObjective.objects.filter( trainee = trainee.id )
    context['topic'] = Topic.objects.filter( trainee = trainee.id )
    return context

  def get_form_kwargs( self ):
    kwargs = super( LearningObjectiveView , self ).get_form_kwargs()
    kwargs['user'] = self.request.user
    return kwargs 

  def form_valid( self, form ):
    self.object = form.save( commit = False )
    if self.request.user.is_authenticated():
      self.object.trainee = Trainee.objects.get( user = self.request.user )
    self.object.save()
    form.save_m2m()
    return super( LearningObjectiveView, self ).form_valid( form )

显然这只会呈现上下文数据，而不是我想要使用的表单。你知道如何解决这个问题。

4

1 回答 1

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FormMixin 不会做你认为它做的事情。它所做的只是提供获取和实例化表单的方法；它不会将其添加到上下文中，也不会处理在提交时验证和保存它。

您可能想要ProcessFormView改用 -​​ 正如文档所述，尽管名称这实际上是一个 mixin。但是，您还应该记住mixins 文档上的警告，不要尝试将来自不同通用组的 mixins 或视图混合在一起。

于 2015-03-24T15:41:45.060 回答