Question

我有以下自定义用户模型。它有一个字段代码，我想与我的设施维度表相关联。

class User(AbstractBaseUser, PermissionsMixin):



    email = models.EmailField(unique=True)
    username = models.CharField(max_length=7, unique=True)
    formattedusername = models.CharField(max_length=11, unique=True, primary_key = True)
    first_name = models.CharField(max_length=40)
    last_name = models.CharField(max_length=140)
    date_joined = models.DateTimeField(default=timezone.now)
    is_active = models.BooleanField(default=True)
    is_staff = models.BooleanField(default=False)
    is_cfo = models.BooleanField(default=False)
    facility = models.CharField(max_length=140)
    officename = models.CharField(max_length=100)
    jobdescription = models.CharField(max_length=140)
    positioncode = models.CharField(max_length = 100)
    positiondescription = models.CharField(max_length=140)
    coid = models.CharField(max_length=5)
    streetaddress = models.CharField(max_length=140)
    title = models.CharField(max_length=100)



    USERNAME_FIELD = 'username'

    class Meta:
        app_label = 'accounts'
        db_table = "user"

    def save(self, *args, **kwargs):
        self.formattedusername = '{domain}\{username}'.format(
            domain='HCA', username=self.username)
        super(User, self).save(*args, **kwargs);

    def get_short_name(self):
        return self.username

我在Facility_Dimension表中定义了外键，但它正在尝试在formattedusername上创建关系。

class FacilityDimension(models.Model):
    unit_num = models.CharField(db_column='Unit_Num', max_length=5, blank=True, null=True)  # Field name made lowercase.
    company_code = models.CharField(db_column='Company_Code', max_length=1, blank=True, null=True)  # Field name made lowercase.
    coid = models.OneToOneField(settings.AUTH_USER_MODEL,db_column='Coid',primary_key=True, serialize=False, max_length=5)  # Field name made lowercase.
    coid_name = models.CharField(db_column='COID_Name', max_length=50, blank=True, null=True)  # Field name made lowercase.
    c_level = models.CharField(db_column='C_Level', max_length=6, blank=True, null=True)  # Field name made lowercase.
    company_name = models.CharField(db_column='Company_Name', max_length=50, blank=True, null=True)  # Field name made lowercase.
    s_level = models.CharField(db_column='S_Level', max_length=6, blank=True, null=True)  # Field name made lowercase.
    sector_name = models.CharField(db_column='Sector_Name', max_length=50, blank=True, null=True)  # Field name made lowercase.
    b_level = models.CharField(db_column='B_Level', max_length=6, blank=True, null=True)  # Field name made lowercase.
    group_name = models.CharField(db_column='Group_Name', max_length=50, blank=True, null=True)  # Field name made lowercase.
    r_level = models.CharField(db_column='R_Level', max_length=6, blank=True, null=True)  # Field name made lowercase.
    division_name = models.CharField(db_column='Division_Name', max_length=50, blank=True, null=True)  # Field name made lowercase.
    d_level = models.CharField(db_column='D_Level', max_length=6, blank=True, null=True)  # Field name made lowercase.
    market_name = models.CharField(db_column='Market_Name', max_length=50, blank=True, null=True)  # Field name made lowercase.
    f_level = models.CharField(db_column='F_Level', max_length=6, blank=True, null=True)  # Field name made lowercase.
    cons_facility_name = models.CharField(db_column='Cons_Facility_Name', max_length=50, blank=True, null=True)  # Field name made lowercase.
    lob_code = models.CharField(db_column='LOB_Code', max_length=3, blank=True, null=True)  # Field name made lowercase.
    lob_name = models.CharField(db_column='LOB_Name', max_length=20, blank=True, null=True)  # Field name made lowercase.
    sub_lob_code = models.CharField(db_column='Sub_LOB_Code', max_length=3, blank=True, null=True)  # Field name made lowercase.
    sub_lob_name = models.CharField(db_column='Sub_LOB_Name', max_length=20, blank=True, null=True)  # Field name made lowercase.
    state_code = models.CharField(db_column='State_Code', max_length=2, blank=True, null=True)  # Field name made lowercase.
    pas_id_current = models.CharField(db_column='PAS_ID_Current', max_length=8, blank=True, null=True)  # Field name made lowercase.
    pas_current_name = models.CharField(db_column='PAS_Current_Name', max_length=40, blank=True, null=True)  # Field name made lowercase.
    pas_id_future = models.CharField(db_column='PAS_ID_Future', max_length=8, blank=True, null=True)  # Field name made lowercase.
    pas_future_name = models.CharField(db_column='PAS_Future_Name', max_length=40, blank=True, null=True)  # Field name made lowercase.
    summary_7_member_ind = models.CharField(db_column='Summary_7_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    summary_8_member_ind = models.CharField(db_column='Summary_8_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    summary_phys_svc_member_ind = models.CharField(db_column='Summary_Phys_Svc_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    summary_asd_member_ind = models.CharField(db_column='Summary_ASD_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    summary_imaging_member_ind = models.CharField(db_column='Summary_Imaging_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    summary_oncology_member_ind = models.CharField(db_column='Summary_Oncology_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    summary_cath_lab_member_ind = models.CharField(db_column='Summary_Cath_Lab_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    summary_intl_member_ind = models.CharField(db_column='Summary_Intl_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    summary_other_member_ind = models.CharField(db_column='Summary_Other_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    pas_coid = models.CharField(db_column='PAS_COID', max_length=5, blank=True, null=True)  # Field name made lowercase.
    pas_status = models.CharField(db_column='PAS_Status', max_length=1, blank=True, null=True)  # Field name made lowercase.
    company_code_operations = models.CharField(db_column='Company_Code_Operations', max_length=3, blank=True, null=True)  # Field name made lowercase.
    osg_pas_ind = models.CharField(db_column='OSG_PAS_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    abs_facility_member_ind = models.CharField(db_column='ABS_Facility_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    abl_facility_member_ind = models.CharField(db_column='ABL_Facility_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    intl_pmis_member_ind = models.CharField(db_column='INTL_PMIS_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    hsc_member_ind = models.CharField(db_column='HSC_Member_Ind', max_length=1, blank=True, null=True)  # Field name made lowercase.
    loaddate = models.DateTimeField(db_column='LoadDate', blank=True, null=True)  # Field name made lowercase.

    class Meta:
        managed = False
        db_table = 'Facility_Dimension'

除了这个模型关系之外，我的所有其他表格都与我的用户表格有关，这是我想要的。

我尝试在我的用户模型中添加ForeignKey关系，但由于它在FacilityDimension之前加载，因此无法识别我的FacilityDimension表

尝试在我的用户模型中运行makemigrations时，使用以下外键时出现以下错误：

NameError: name 'FacilityDimension' is not defined

coid = models.ForeignKey(FacilityDimension,max_length=5)

Answer 1

您可以通过以下方法之一解决此问题：

导入相关模型先前用户类模型
ForeignKey中的Stringfy类名称（主要用于循环导入时使用）

models.ForeignKey('myapp.FacilityDimension', max_length=5)

Answer 2

我发现我可以使用related_name =＆＃39; coid＆＃39;在我的模型中。这解决了这个问题。

关联外键上的模型

2 个答案: