error : 'Processus' object has no attribute 'outil_set' - django

Question

你好，我想在我的 'Processus' 中显示 'outils' 所以在我看来，我做了类似的事情：

def processus(request, pk_test):

   processus = Processus.objects.get(id=pk_test)

   outils = processus.outil_set.all()

   total_outils = outils.count()

   context={
       'processus':processus,
       'outils':outils,

       'total_outils':total_outils,
 }

但它不起作用它显示错误 'Processus' 对象没有属性 'outil_set'

这是我的models.py

    class outil(ressource):
        nom_outil = models.CharField(max_length=250)
        proprieté = models.CharField(max_length=250)
        technique_id = models.ForeignKey(technique, on_delete = models.CASCADE)

        def __str__(self):
            return self.nom_outil

    class Processus(models.Model):
        nom = models.CharField(max_length=250)
        proprieté = models.CharField(max_length=250)
        outils = models.ManyToManyField(outil)

        def __str__(self):
            return self.nom

Answer 1

关系的名称是 outils，因此您可以使用 processus.outils.all():

访问它

def processus(request, pk_test):
    processus = Processus.objects.get(id=pk_test)
    outils = processus<b>.outils</b>.all()
    total_outils = outils.count()
    context={
        'processus':processus,
        'outils': outils,
        'total_outils':total_outils,
    }
    # …

Note: It is often better to use get_object_or_404(…) [Django-doc], then to use .get(…) [Django-doc] directly. In case the object does not exists, for example because the user altered the URL themselves, the get_object_or_404(…) will result in returning a HTTP 404 Not Found response, whereas using .get(…) will result in a HTTP 500 Server Error.

Note: Models in Django are written in PerlCase, not snake_case, so you might want to rename the model from ~~outil~~ to Outil.

error : 'Processus' object has no attribute 'outil_set' - django

error : 'Processus' object has no attribute 'outil_set' - django

django

django-queryset