Question

我试图获取存储在 CandidateSkill 模型（In [5]）中的外键实例，但希望避免使用循环。

我尝试过values()，它只返回存储在候选模型中的实际candidate_id(int)，而不返回实例。

models.py

class Candidate(models.Model):
    candidate_id = models.AutoField(primary_key = True)
    name = models.CharField(max_length = 255, null = False)

class CandidateSkill(models.Model):
    candidate_id = models.ForeignKey('hr.Candidate', on_delete = models.CASCADE)
    skill = models.CharField(max_length = 255)

Django Shell

In [1]: from hr.models import CandidateSkill as cds

In [2]: a = cds.objects.filter(skill__icontains = 'py')

In [3]: a
Out[3]: <QuerySet [<CandidateSkill: CandidateSkill object (1)>, <CandidateSkill: CandidateSkill object (2)>, <CandidateSkill: CandidateSkill object (3)>, <CandidateSkill: CandidateSkill object (4)>, <CandidateSkill: CandidateSkill object (10)>]>

In [4]: a[0]
Out[4]: <CandidateSkill: CandidateSkill object (1)>

In [5]: a[0].candidate_id
Out[5]: <Candidate: Clayton Cote>

所以我有办法只获取外键实例并避免使用循环。

Answer 1

如果我正确理解了您的问题，您想获取所有CandidateSkill包含字符串“ py”的候选人吗？这应该得到您想要的

Candidate.objects.filter(candidateskill__skill__icontains='py')

有没有办法从QuerySet中获取外键实例？

1 个答案: