Question

我正在使用py3 + django 2.x使用通用外键建立内联模型。子模型和父模型中都有一个称为“客户端”的通用值，它是链接到客户端表的外键。

添加子项时，我希望新的子项自动采用保存在其父项中的“客户端”值。我试图用谷歌搜索它的答案而没有找到解决方案...

#Filestorage management model
class ChildModel(models.Model):
object_id    = models.PositiveIntegerField()
content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
of           = GenericForeignKey('content_type', 'object_id')    
#
fileName = models.CharField(max_length=50)
client = models.ForeignKey(ClientCtrl, on_delete=models.CASCADE)       


#Filestorage management inline
class ChildModelLine(GenericTabularInline):
model = ChildModel
ct_field_name = 'content_type'
id_field_name = 'object_id'
fieldsets = (
    (None, {
        'fields': ('id','client','fileName',...),
        }),  
)
readonly_fields = ('id','client')


class ParentModelAdmin(admin.ModelAdmin):

inlines = [ChildModelLine] 
...
def save_formset(self, request, form, formset, change):
    instances = formset.save(commit=False)
    for instance in instances:
        if not instance.pk:
            instance.oper = request.user
            instance.client = self.ParentModel.client
        instance.save()
    formset.save_m2m()

添加嵌入式项目时，我想将现有的客户价值键从父级传递给子级。

添加新的内联记录时，将值从父模型传递到内联

0 个答案: