Question

我试图一起使用autocomplete_light和django-dynamic-formset：两者都是单独工作但我不能让它们一起工作......让我们从代码开始......

models.py：

class Tmp_User(models.Model):
    userName   = models.CharField(max_length=200, blank=True, null=True,)
    firstName  = models.CharField(max_length=200, blank=True, null=True,)
    lastName   = models.CharField(max_length=200, blank=True, null=True,)
    ...
class Project(models.Model):
    title = models.CharField()
    ...
class Segment_in_Project(models.Model):
    name = models.CharField()
    the_project = models.ForeignKey('Project') 
    translator = models.ForeignKey('Tmp_User')
    ...

forms.py

autocomplete_light.autodiscover()

class AddProjectForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(AddProjectForm, self).__init__(*args, **kwargs)
    class Meta:
        model = Project
        fields = '__all__'

class AddSegmentForm(autocomplete_light.ModelForm):
    def __init__(self, *args, **kwargs):
        super(AddSegmentForm, self).__init__(*args, **kwargs)
    class Meta:
        model = Segment_in_Project
        autocomplete_exclude = ['the_project']
        fields = '__all__'

SegmentFormSet = formset_factory(AddSegmentForm)

autocomplete_light_registry.py

autocomplete_light.register(Tmp_User,
    search_fields=['^firstName', 'lastName'])

和views.py

class ProjectCreateView(CreateView):
    model = Project
    template_name = 'home/formset-table.html'
    form_class = AddProjectForm
    success_url = '/admin'

    def get(self, request, *args, **kwargs):
        self.object = None
        form_class = self.get_form_class()
        form = self.get_form(form_class)
        formset = SegmentFormSet()
        return self.render_to_response(
            self.get_context_data(
               form_Project=form,           
               formset_Segment=formset))

    def post(self, request, *args, **kwargs):
        self.object = None
        form_class = self.get_form_class()
        form = self.get_form(form_class)
        formset = SegmentFormSet(self.request.POST)
        if (form.is_valid() and formset.is_valid()):
            return self.form_valid(form, formset)
        else:
            return self.form_invalid(form, formset)

    def form_valid(self, form, formset):
        self.object = form.save()
        self.object.save()
        formset.instance = self.object
        formset.save()
        return super(ProjectCreateView, self).form_valid(form)

    def form_invalid(self, form, formset):
        return self.render_to_response(
            self.get_context_data(
                 form_Project=form, formset_Segment=formset))

问题是formset实例不是＆＃34;绑定＆＃34;到项目模型并且验证失败：错误告诉the_project未定义...我尝试先保存表单，获取新保存项目的ID并将其与请求一起传递给formset .POST，当我提出形式集...但它没有工作......

另一方面，使用inlineformset_factory(Project,Segment_in_Project)代替formset_factory会破坏autocomplete_light功能...（我不知道如何将autocomplete_light.ModelForm用于Segment_in_Project formset）

关于如何做的任何想法或建议？感谢

Answer 1

行。经过大量尝试后，我找到了解决方案。从某种意义上讲，它不是完美的，它可以满足我的需求，但我仍然感觉应该有更好的东西......

无论如何，我所做的就是完全破解post函数：我首先保存ProjectModel，然后我获取已保存项目的id，然后我读取了formset POST信息（它没有关于ID的任何信息）刚刚创建的项目），获取我需要的信息并使用正确的项目ID构建一个新的formset然后我保存它。代码如下：

def post(self, request, *args, **kwargs):
    self.object = None
    form_class = self.get_form_class()
    form = self.get_form(form_class)
    form.instance.created_by = self.request.user
    formset = SegmentFormSet(self.request.POST)
    if form.is_valid():
        self.object = form.save()
    newdata = {}
    for idx, form in enumerate(formset):
        for field in form.fields:
            print idx, field, form[field].value()
            if field == 'the_project':
                tmp_field = u"form-%s-the_project"%(idx)
                newdata[tmp_field] = self.object.id
            elif field == 'id':
                pass
            else:
                tmp_field = u"form-%s-%s"%(idx,field)
                newdata[tmp_field] = form[field].value()
    newdata[u"form-MAX_NUM_FORMS"] = u"1000"
    newdata[u"form-MIN_NUM_FORMS"] = u"0"
    newdata[u"form-INITIAL_FORMS"] = u"0"
    newdata[u"form-TOTAL_FORMS"] = len(formset)
    newdata[u"title"] = self.object.title
    new_formset = SegmentFormSet(newdata)
    if new_formset.is_valid():
        return self.form_valid(form, new_formset)
    else:
        return self.form_invalid(form, new_formset)

如您所见，newdata DICT正是我所需要的（包括项目ID），用于正确保存SegmentFormSet。

如果有人有更好的解决方案......请告诉我

autocomplete_light和django-dynamic-formset不能一起使用

1 个答案: