Question

我正在开发一个非常基本的cms /博客。对于我自己的用途，它取决于django-adminfiles和django-markitup。因为我可能想要分发应用程序，所以我一直试图找出一种方法来检查是否满足这些依赖项，如果它们不在已安装的应用程序中，则会回退到django的默认值。

我想出了下面的代码并且它有效。事情是感觉很麻烦，并为脚本的头部添加了大量代码。我想知道是否有任何其他（推荐）处理依赖关系的方法。如果我回答了我自己的问题（因为代码正在运行），欢迎任何评论。

from django.conf import settings as django_settings

# Check installed apps for django-markitup and django-adminfiles
if 'adminfiles' in django_settings.INSTALLED_APPS:
    from adminfiles.admin import FilePickerAdmin
    adminfiles = True

    #inherit from FilePickerAdmin
    class ModelAdmin(FilePickerAdmin):
        pass
else:
    adminfiles = False

    #inherit from admin.ModelAdmin if adminfiles =false
    class ModelAdmin(admin.ModelAdmin):
        pass

#then my own admin class inherits from ModelAdmin above    
class HomePageAdmin(ModelAdmin):
    exclude = ('slug',)    
    list_display = ('title', 'status',)
    list_filter = ('section',)

    if adminfiles:
        adminfiles_fields = ('body')

我可以在新的django项目中使用该应用程序，或从已安装的应用程序中删除管理文件，它仍可在管理员中使用。

Answer 1

这就是我最终的表现：

在app模块中创建一个settings.py文件：

import django
from django.conf import settings

SECTIONS_EXTRAS = getattr(settings, 'SECTIONS_EXTRAS', False)

我现在可以轻松地从项目的设置文件中打开和关闭设置。

然后将以下内容添加到admin.py：

from django.conf import settings as django_settings
from sections.models import HomePage,
from sections import settings

markitup = False

if settings.SECTIONS_EXTRAS:
    # Check installed apps for django-markitup and django-adminfiles
    if 'adminfiles' in django_settings.INSTALLED_APPS:
        from adminfiles.admin import FilePickerAdmin

    class ModelAdmin(FilePickerAdmin):
        pass

    if 'markitup' in django_settings.INSTALLED_APPS:
        from markitup.widgets import  MarkItUpWidget

    markitup = True
else:
    class ModelAdmin(admin.ModelAdmin):
        pass

class HomePageAdmin(ModelAdmin):
    exclude = ('slug',)

    list_display = ('title', 'status', 'section')
    list_filter = ('section',)

    # Extras

    adminfiles_fields = ('body')

    if markitup:
        def formfield_for_dbfield(self, db_field, **kwargs):
            if db_field.name == 'body':
                kwargs['widget'] = MarkItUpWidget()
            return super(HomePageAdmin, self).formfield_for_dbfield(db_field, **kwargs)

处理依赖关系并保持应用程序可插入

1 个答案: