Question

tests / admin.py：

from django.forms import ModelForm
from openwisp_utils.admin import AlwaysHasChangedMixin, ReadOnlyAdmin

from .models import Operator, Project, RadiusAccounting


@admin.register(Operator)
class OperatorAdmin(admin.ModelAdmin):
    list_display = ['first_name', 'last_name']


@admin.register(RadiusAccounting)
class RadiusAccountingAdmin(ReadOnlyAdmin):
    list_display = ['session_id', 'username']
    fields = ['session_id', 'username']


class OperatorForm(AlwaysHasChangedMixin, ModelForm):
    pass


class OperatorInline(admin.StackedInline):
    model = Operator
    form = OperatorForm
    extra = 0


@admin.register(Project)
class ProjectAdmin(admin.ModelAdmin):
    inlines = [OperatorInline]
    list_display = ['name']

openwisp_utils / admin.py：

from django.contrib.admin import ModelAdmin


class TimeReadonlyAdminMixin(object):
    """
    mixin that automatically flags
    `created` and `modified` as readonly
    """
    def __init__(self, *args, **kwargs):
        self.readonly_fields += ('created', 'modified',)
        super(TimeReadonlyAdminMixin, self).__init__(*args, **kwargs)


class ReadOnlyAdmin(ModelAdmin):
    """
    Disables all editing capabilities
    """
    def __init__(self, *args, **kwargs):
        super(ReadOnlyAdmin, self).__init__(*args, **kwargs)
        self.readonly_fields = [f.name for f in self.model._meta.fields]

    def get_actions(self, request):
        actions = super(ReadOnlyAdmin, self).get_actions(request)
        if 'delete_selected' in actions:  # pragma: no cover
            del actions['delete_selected']
        return actions

    def has_add_permission(self, request):
        return False

    def has_delete_permission(self, request, obj=None):
        return False

    def save_model(self, request, obj, form, change):  # pragma: nocover
        pass

    def delete_model(self, request, obj):  # pragma: nocover
        pass

    def save_related(self, request, form, formsets, change):  # pragma: nocover
        pass

    def change_view(self, request, object_id, extra_context=None):
        extra_context = extra_context or {}
        extra_context['show_save_and_continue'] = False
        extra_context['show_save'] = False
        return super(ReadOnlyAdmin, self).change_view(request,
                                                      object_id,
                                                      extra_context=extra_context)


class AlwaysHasChangedMixin(object):
    def has_changed(self):
        """
        This django-admin trick ensures the settings
        are saved even if default values are unchanged
        (without this trick new setting objects won't be
        created unless users change the default values)
        """
        if self.instance._state.adding:
            return True
        return super(AlwaysHasChangedMixin, self).has_changed()

错误： Error Snippet.jpg

迁移上面的代码时会出现此导入错误...。请提供有关如何解决此导入错误的帮助。

openwisp_utils 和测试文件都在同一父文件夹下。

从“ openwisp_utils”导入之前，“ tests”项目的settings.py文件中是否需要更改/添加任何内容？

“导入错误”：关于将管理文件从一个项目文件夹导入到Django中相同目录下的另一个项目的

0 个答案: