Django 管理模型 add_view：如何删除“保存并添加另一个”按钮？

Posted 2023-02-24

【中文标题】Django 管理模型 add_view：如何删除“保存并添加另一个”按钮？

【英文标题】：Django admin model add_view: how to remove "save and add another" buttons?

【发布时间】：2014-11-18 10:45:03

【问题描述】：

通过实现以下代码，我能够删除“保存并添加另一个”和“保存并继续编辑”按钮：

# At the start of my admin.py file I have:
from django.contrib.admin.templatetags.admin_modify import *
from django.contrib.admin.templatetags.admin_modify import submit_row as original_submit_row

@register.inclusion_tag('admin/submit_line.html', takes_context=True)
def submit_row(context):
    ctx = original_submit_row(context)
    ctx.update(
        'show_save_and_add_another': context.get('show_save_and_add_another', ctx['show_save_and_add_another']),
        'show_save_and_continue': context.get('show_save_and_continue', ctx['show_save_and_continue'])
        )
    return ctx

class MyModelAdmin(GuardedModelAdmin):
# Then inside MyModelAdmin I have this:
    def change_view(self, request, object_id, form_url='', extra_context=None):
        extra_context = extra_context or 
        extra_context['show_save_and_add_another'] = False
        extra_context['show_save_and_continue'] = False
        return super(MyModelAdmin, self).change_view(request, object_id,
            form_url, extra_context=extra_context)

这在我使用 change_view 时效果很好，但是当我添加模型的新实例时，按钮会重新出现。我尝试了以下方法：

    def add_view(self, request, form_url='', extra_context=None):
        extra_context = extra_context or 
        extra_context['show_save_and_add_another'] = False
        extra_context['show_save_and_continue'] = False
        return super(MyModelAdmin, self).add_view(self, request, form_url='', extra_context=extra_context)

但它给了我一个奇怪的 MissingAtrribute 错误——这是回溯：

Traceback:
File "/home/username/.virtualenvs/MyProject/lib/python3.3/site-packages/django/core/handlers/base.py" in get_response
  114.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/username/.virtualenvs/MyProject/lib/python3.3/site-packages/django/contrib/admin/options.py" in wrapper
  432.                 return self.admin_site.admin_view(view)(*args, **kwargs)
File "/home/username/.virtualenvs/MyProject/lib/python3.3/site-packages/django/utils/decorators.py" in _wrapped_view
  99.                     response = view_func(request, *args, **kwargs)
File "/home/username/.virtualenvs/MyProject/lib/python3.3/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
  52.         response = view_func(request, *args, **kwargs)
File "/home/username/.virtualenvs/MyProject/lib/python3.3/site-packages/django/contrib/admin/sites.py" in inner
  198.             return view(request, *args, **kwargs)
File "/home/username/Development/MyProject/webapp/MyModel/admin.py" in add_view
  153.         return super(MyModelAdmin, self).add_view(self, request, form_url='', extra_context=extra_context)
File "/home/username/.virtualenvs/MyProject/lib/python3.3/site-packages/django/utils/decorators.py" in _wrapper
  29.             return bound_func(*args, **kwargs)
File "/home/username/.virtualenvs/MyProject/lib/python3.3/site-packages/django/utils/decorators.py" in _wrapped_view
  95.                     result = middleware.process_view(request, view_func, args, kwargs)
File "/home/username/.virtualenvs/MyProject/lib/python3.3/site-packages/django/middleware/csrf.py" in process_view
  111.                 request.COOKIES[settings.CSRF_COOKIE_NAME])

Exception Type: AttributeError at /admin/MyModel/ModelInstance/add/
Exception Value: 'MyModelAdmin' object has no attribute 'COOKIES'

我正在使用 django-guardian 并想知道这是否会导致我的问题？有谁知道在添加新模型实例时如何从模板的 submit_line 部分摆脱这些烦人的按钮？

【参考方案1】：

我有这个代码在一个小项目中工作，我没有放参考，因为我推断它并且它有效:)

##admin.py
class Admincommits(admin.ModelAdmin):
    list_display = ["id"]
    list_filter = ["id"]
    search_fields = ["id"]
    actions = None

    def add_view(self, request, extra_context=None):
        if request.user.is_superuser:
            extra_context = extra_context or 
            extra_context['show_save_and_continue'] = False
            #extra_context['show_save_and_add_another'] = False
            #extra_context['show_save'] = False
            #extra_context['show_delete'] = False
        return super(Admincommits, self).add_view(request, extra_context=extra_context) 

【参考方案2】：

如果您想为了美观而简单地隐藏这些按钮，您也可以使用 CSS，但这可能不是最好的方法，因为您可以通过检查 css 来启用它们，它当然很简单，而且仍然足够精细，只能隐藏它们在某些模型管理员上。

admin.py：

class MyModelAdmin(admin.ModelAdmin)

    ....

    class Media:
        #js = ('' )  # Can include js if needed
        css = 'all': ('my_admin/css/my_model.css', )  

my_model.css 位于上述路径中的静态文件夹中。

my_model.css：

/* Optionally make the continue and save button look like primary */
input[name="_continue"]
    border: 2px solid #5b80b2;
    background: #7CA0C7;
    color: white;


/* Hide the "Delete", "Add Another" and "Save" buttons, customize this to what you need  */
.deletelink, input[name="_addanother"], input[name="_save"]
    display: none;

这些按钮的类和名称可能会在 django 版本之间发生变化，我现在使用的是 Django 1.6.6，我认为它们最近没有变化。如果您希望这对您的整个管理站点有效，您可以将 admin/base_site.html 默认模板复制到您的静态目录并覆盖“extrahead”块以包含此样式。见base_site.html。

希望 CSS 方法有所帮助 :) 它肯定不会对您造成任何错误。

【讨论】：

不错的解决方法 -- 如果没有其他人能够追踪错误原因，我会在几天内接受它。