初学者：Django CreateView表单中外键字段的动态过滤

型号：

视图：

模板：

class CycleCreateView(CreateView):
    model = Instructional_Cycle
    template_name = 'cycle_new.html'
    fields = '__all__'
    success_url = reverse_lazy('student_progress:cycles')

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请为这个新手“安静下来”。我刚刚完成了Django初学者版的工作，关于这一切如何结合在一起的概念模型仍然充满漏洞。请假定我几乎什么都不知道。谢谢

您应该考虑使用类似django ajax select的东西

一个页面上的大量反应性工作需要您熟悉Javascript、Ajax等。如果是这样，您可以采取多种方法，使用所需的选项刷新表单

或者，您可以在流程的前一步要求用户提供必要的数据，然后让Django首先通过以下步骤为您构建正确的表单

class CycleCreateView(CreateView):
    model = Instructional_Cycle
    template_name = 'cycle_new.html'
    fields = '__all__'
    success_url = reverse_lazy('student_progress:cycles')

<!-- student_progress/cycle_new.html -->

{% extends 'base.html' %}

{% block content %}
    <h1>Add a new instructional cycle:</h1>

    <form action="{% url 'student_progress:cycle_new' %}" method="post">
        {% csrf_token %}
        {{ form.as_p }}
        <button name="submit">add cycle</button>
    </form>

{% endblock content %}

class StandardAdmin(admin.ModelAdmin):
    list_display = ('descriptor', 'description', 'essential_status')
    list_filter = ('subject', 'grade_level', 'essential_status')
    search_fields = ('descriptor',)
    inlines = [MilestoneInLine]

    def get_search_results(self, request, queryset, search_term):
        queryset, use_distinct = super().get_search_results(request, queryset,         search_term)
        try:
            search_term_as_int = int(search_term)
        except ValueError:
            pass
        else:
            queryset |= self.model.objects.filter(age=search_term_as_int)
        return queryset, use_distinct