django admin - 匹配的查询不存在

Posted 2023-02-24

【中文标题】django admin - 匹配的查询不存在

【英文标题】：django admin - matching query does not exist

【发布时间】：2017-09-30 19:45:09

【问题描述】：

编辑 我认为它与 django-fsm 相关，看看我为 States 编写的这段代码

class STATE:
    SUBMITTED = 'Submitted'
    VERIFIED_BY_DA = 'Verified by DA'
    APPROVED_BY_MS = 'Verified by MS'
    APPROVED_BY_DR = 'Approved by DR'
    APPROVED_BY_SrAO = 'Approved by SAO.'
    APPROVED_BY_R = 'Approved by R'
    AMOUNT_TRANSFERRED = 'Accepted'
    REJECT = 'Rejected'

    def __init__(self):
        pass


STATE_CHOICES = (
    (STATE.SUBMITTED, 'Submitted', 'Medical'),
    (STATE.VERIFIED_BY_DA, 'Verified by DA', 'Medical'),
    (STATE.APPROVED_BY_MS, 'Approved by MD', 'Medical'),
    (STATE.APPROVED_BY_DR, 'Approved by DR', 'Medical'),
    (STATE.APPROVED_BY_SrAO, 'Approved by SAO', 'Medical'),
    (STATE.APPROVED_BY_R, 'Approved by R', 'Medical'),
    (STATE.AMOUNT_TRANSFERRED, 'Amount transferred by AD', 'Medical'),
    (STATE.REJECT, 'Reject', 'Medical'),
)

所以我在 django 的模型文件夹下的单独文件中定义了这两个模型 首先，我只定义了 Medical 模型，一切正常

from django_fsm import FSMField

from state import STATE
from state import STATE_CHOICES

class Medical(BaseModel):

    general_detail = models.ForeignKey(
        GeneralDetail,
        help_text='General Detail'
    )
    state = FSMField(
        blank=True,
        protected=not settings.DEBUG,
        default=STATE.SUBMITTED,
        state_choices=STATE_CHOICES,
    )

    def __str__(self):
        return str(self.general_detail.employee.user.first_name) + ' ' \
               + str(self.general_detail.employee.user.last_name)

    def __unicode__(self):
        return str(self.general_detail.employee.user.first_name) + ' ' \
               + str(self.general_detail.employee.user.last_name)

但是在下面的模型中添加这个之后，当使用 django-admin 保存转换历史中的字段时，它会在 django-admin 中出现错误。

class TransitionHistory(BaseModel):

    state_from = FSMField(
        blank=True,
        protected=not settings.DEBUG,
        default=STATE.SUBMITTED,
        state_choices=STATE_CHOICES,
    )
    state_to = FSMField(
        blank=True,
        protected=not settings.DEBUG,
        default=STATE.SUBMITTED,
        state_choices=STATE_CHOICES,
    )

    def __str__(self):
        return str(self.state_from) + str(self.state_to)

    def __unicode__(self):
        return str(self.state_from) + str(self.state_to)

错误 异常类型：DoesNotExist

异常值：医学匹配查询不存在

第 379 行 C:\Python27\lib\site-packages\django\db\models\query.py 在 get self.model._meta.object_name

【问题讨论】：

你能解决你的问题吗？我有类似的东西

嗯，我不记得解决了这个问题，但可能只与迁移有关

【参考方案1】：

只需检查您是否进行了迁移，如果是，那么您可能忘记在 admin.py 中注册您的模型

【讨论】：

是的，我已经做了所有事情，我认为它与 django-fsm 模块有关