django - Tastypie REST 上的 ForeignKey - 模型“”有一个空属性

Question

我需要列出每个员工的工作时间，但我得到：

模型 '' 有一个空属性 'work_journey' 并且不允许空值。

上：

/rest/tastypie/employee/?format=json

模型.py

class Employee():
    registration = models.CharField(u'Registration', max_length=20, unique=True)
    work_journey = models.ForeignKey(WorkJourney, null=True, blank=True)

hr.models.py

class WorkJourney(ModelPlus):
    code = models.CharField(max_length=10, null=True, unique=True)
    workinghours = models.CharField(max_length=40)
    excluded = models.BooleanField()

    class Meta:
        db_table='work_journey'
        verbose_name = u'Work Journey'

    def __unicode__(self):
        return self.workinghours

资源.py

from suap.models import Employee
from hr.models import WorkJourney


class WorkJourneyResource(ModelResource):
    class Meta:
        queryset = WorkJourney.objects.all()
        resource_name = 'work_journey'
        authentication = BasicAuthentication()

class EmployeeResource(ModelResource):
    journey = fields.ForeignKey(WorkJourney, 'work_journey')
    class Meta:
        queryset = Employee.objects.all()
        resource_name = 'employee'
        authentication = BasicAuthentication()

Answer 1

1/当你在 ressoure.py 中定义你的关系时，你需要一个WorkJourneyResource而不是WorkJourney

2/ 要允许空值，只需添加null=True, blank=True

这是固定的代码：

class EmployeeResource(ModelResource):
    journey = fields.ForeignKey(WorkJourneyResource, 'work_journey', null=True, blank=True)
    ....