python - 只从 django Manytomany 中取出一项

Question

这应该从底部显示的模型中提取一条记录，传递给 JavaScript 以显示在 UI 上。 我在提取 location 多个数据进行推送时遇到问题。这是因为它只拉取一项，而不是多对多关联的所有项目。 location 用于将标签放置在 select2 multiselect 上 当前不需要技能组数据

def GetPersonnelData(request, res_id):

    data = []

    res = Resource.objects.get(id=res_id)
    if not res: return HttpResponseNotFound()

    role = list(Role.objects.values_list('role_name').filter(id=res.role_id))
    emp = list(Employer.objects.values_list('employer_name').filter(id=res.employer_id))
    teamz = list(Team.objects.values_list('team_name').filter(id=res.teams_id))

    t = {
            "title":res.title,
            "pk":res.pk,
            "last_name":res.last_name,
            "preferred_name":res.preferred_name,
            "employstatus":res.employstatus,
            "employer":emp,
            "business_phone":res.business_phone, 
            "mobile_phone":res.mobile_phone,
            "email":res.email,
            "teams":teamz,
            "role_name":role,
            "notes":res.notes,
            "updated_by":res.updated_by,
            "updated_on":res.updated_on,
        }

    data.append(t);
    print data

    loc = Resource.objects.get(pk=res_id)
    for x in loc.location.all().filter(resource=res_id):
        l = {
            "location":x.name,
            }
    print x

Django 模型

class Resource(models.Model):
    title = models.CharField(max_length=10)
    preferred_name = models.CharField(max_length=20)
    last_name = models.CharField(max_length=30)
    employer = models.ForeignKey('Employer')
    employstatus = models.CharField(max_length=20)
    role = models.ForeignKey('Role')
    teams = models.ForeignKey('Team')
    location = models.ManyToManyField('Location')
    email = models.CharField(max_length=50, blank=True, null=True)
    business_phone = models.CharField(max_length=15, blank=True, null=True)
    mobile_phone = models.CharField(max_length=15, blank=True, null=True)
    notes = models.CharField(max_length=200, blank=True, null=True)
    updated_by = models.CharField(max_length=30, blank=True, null=True)
    updated_on = models.DateTimeField(auto_now=True)
    archived = models.BooleanField(default=False)
    skillset = models.ManyToManyField('ReferenceSkillList')

Answer 1

如果您希望 print x 打印所有位置，您应该将缩进更改为 for block 内(现在在 for block 外，您应该收到未知名称错误)。就像这样:

for x in loc.location.all().filter(resource=res_id):
    l = {
        "location":x.name,
        }
    print x

如果你想将所有位置名称收集到字典中，你应该将其更改为:

l = {"location":[]}
for x in loc.location.all().filter(resource=res_id):
    l["location"] += x.name

在循环的每次迭代中创建新字典之前，仅保留最后一次实例化的结果。