[Answered ]-Get field value from inside the model class

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I finally found a solution that required me to modify my Folder fields so that doesn’t really answer my initial question, but it solved my problem so I put it here in case that can help someone else.

So basically, I changed my parent_folder field from a FilePathField to a Folder ForeignKey, which can be left blank in case I want to put the folder in the root folder :

class Folder(models.Model):
    folder_name = models.CharField(max_length=200)
    parent_folder = models.ForeignKey('self', on_delete=models.CASCADE, blank=True, null=True)

Now that I have my folders under the form of a ForeignKey, I can modify the queryset and exclude the folder itself from the list of folders availables by overriding the render_change_form method, like so :

class FolderAdmin(admin.ModelAdmin):    
    fieldsets = [
        (None,            {'fields': ['folder_name']}),
        ('Parent Folder', {'fields': ['parent_folder']}),
    ]
    
    list_display = ('folder_name', '__str__')
    
    def render_change_form(self, request, context, *args, **kwargs):
        context['adminform'].form.fields['parent_folder'].queryset = Folder.objects.exclude(id=context['object_id'])
        return super(FolderAdmin, self).render_change_form(request, context, *args, **kwargs)
👤Balizok

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