第二页 = ParentalKey() 定义，在不同的页面模型中使用一个片段

Question

我定义了两个 Relationship(Orderable, models.Model) 以便能够在不同的页面模型中使用一个模型片段，例如：

class GroupstageTournamentModel(models.Model):
...
class GroupstageTournamentRelationship(Orderable, models.Model):
    page = ParentalKey('TournamentPage',
        related_name='groupstage_tournament_relationship')
    match = models.ForeignKey('GroupstageTournamentModel',
        related_name='match_tournament_relationship')
    panels = [
        PageChooserPanel('match')
    ]
class MatchesScreencastRelationship(Orderable, models.Model):
    page = ParentalKey('ScreencastPage',
        related_name='groupstage_screencast_relationship')
    match = models.ForeignKey('GroupstageTournamentModel',
        default="", related_name='match_screen_relationship')
    panels = [
        PageChooserPanel('match')
    ]

class TournamentPage(Page):
    starts_at = models.DateTimeField(blank=True)
    ends_at = models.DateTimeField(blank=True)

    content_panels = Page.content_panels + [
        FieldPanel('title'),
        FieldPanel('starts_at'),
        FieldPanel('ends_at'),
        InlinePanel(
            'groupstage_tournament_relationship', label="Group game:",
            panels=None, min_num=1),
    ]

    def __str__(self):
        return self.title

class ScreencastPage(Page):

    content_panels = Page.content_panels + [
        FieldPanel('title'),
        InlinePanel(
            'groupstage_screencast_relationship', label="Playing First",
            panels=None, max_num=1),
    ]

    parent_page_types = ['home.HomePage']
    subpage_types = []

    def __str__(self):
        # return self.title
        return '{} \n Nächste: {}'.format(self.groupstage_relationship, self.final_phase_relationship)

如您所见，我的想法是在站点 TournamentPage 中使用其中一个，在 ScreencastPage 中使用另一个。如果我这样做，我会得到这个错误：

错误：

django.core.exceptions.FieldError: Local field 'id' in class 'GroupstageTournamentRelationship' clashes with field of the same name from base class 'GroupstageTournamentModel'.

如何解决这个问题？是否可以以某种方式添加与 ScreencastPage 的关系的第二个 ParentalKey，并像在 backerydemo?

中那样直接在 GroupstageTournamentModel 中使用它

更新

我将 GroupstageTournamentModel 从 model.Model 更改为 ClusterableModel 并且我更改了 related_name 以便它在两个 related_name 中都不同 related_name='groupstage_tournament_relationship' 和 related_name='groupstage_screencast_relationship'。我再次进行了迁移并得到了同样的错误。这是我的 GroupstageTournamentRelationship class:

class GroupstageTournamentModel(ClusterableModel):
    number = models.PositiveSmallIntegerField(
        help_text="Add the unique number of this Match.")
    starts_at = models.DateTimeField()
    # Team 1
    team_1 = models.ForeignKey(
        TeamRooster,
        null=True, blank=True,
        on_delete=models.SET_NULL,
        related_name="+",
    )
    team_1_dress = ColorField(default='#ff0000', blank=True)
    team_1_first_halftime_score = models.PositiveSmallIntegerField(blank=True, default="")
    # Team 2
    team_2 = models.ForeignKey(
        TeamRooster,
        null=True, blank=True,
        on_delete=models.SET_NULL,
        related_name="+",
    )
    team_2_dress = ColorField(default='#0066ff', blank=True)
    team_2_first_halftime_score = models.PositiveSmallIntegerField(blank=True, default="")

    panels = [
        FieldPanel('number', classname="6"),
        FieldPanel('starts_at', classname="6"),
        MultiFieldPanel([
            FieldRowPanel([
                FieldPanel('team_1', classname="6"),
                FieldPanel('team_1_dress', classname="6"),
                FieldPanel('team_1_first_halftime_score', classname="3"),
            ]),
        ], classname="full", heading="Team 1"),
        MultiFieldPanel([
            FieldRowPanel([
                FieldPanel('team_2', classname="6"),
                FieldPanel('team_2_dress', classname="6"),
                FieldPanel('team_2_first_halftime_score', classname="3"),
            ]),
        ], classname="full", heading="Team 2"),
    ]

    def __str__(self):
        return '{} vs {} {} - {}'.format(self.team_1, self.team_2, self.starts_at, self.number)

    class Meta:
        verbose_name = 'Gruppenphase Spiel'
        verbose_name_plural = 'Gruppenphase'

更新

我在迁移文件中发现了以下内容，我不确定如果删除它会发生什么：

更新

为了清楚起见，我缩短了模型并添加了 "TournamentPage"。

Answer 1

我删除了包含 0001_inicial.py 的迁移文件，然后再次 py manage.py makemigrations 并且一切正常！

第二页 = ParentalKey() 定义，在不同的页面模型中使用一个片段

Second page = ParentalKey() definition, to use one snippen in different Page models

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