python – Django,queryset过滤ManyToManyField

我确实有以下两种型号.所以我试图获得特定课程的所有模块.正如你所看到的,我已经得到了那个特定的课程.所以我只需要从中获取模块.我阅读了有关过滤ManyToManyField的the docs,但仍无法使其正常工作.我知道也许这太简单但无法解决.

models.py

class Course(models.Model):
    name = models.CharField(max_length=100)
    modules = models.ManyToManyField('Module', blank=True)

class Module(models.Model):
    code = models.CharField(max_length=10, unique=True)
    name = models.CharField(max_length=65)
    year = models.IntegerField()

view.py

def ajax_get_modules(request, course):
    current_course = Course.objects.get(pk=course).pk
    modules = Module.objects.filter(...........)
    if request.is_ajax():
        data = serializers.serialize('json', modules)
        return HttpResponse(data, content_type="application/javascript")

解决方法:

尝试：

current_course = Course.objects.get(pk=course)
modules = Module.objects.all().filter(course=current_course)

标签：python,django,filter,django-orm
来源： https://codeday.me/bug/20190624/1279034.html